{"id":7905,"date":"2026-10-06T23:46:39","date_gmt":"2026-10-06T14:46:39","guid":{"rendered":"https:\/\/engineering.webstudio168.jp\/blog\/?p=7905"},"modified":"2026-10-06T23:57:15","modified_gmt":"2026-10-06T14:57:15","slug":"javascript-confirm-custom","status":"publish","type":"post","link":"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/","title":{"rendered":"JavaScript\u306econfirm\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u65b9\u6cd5\u3010dialog\u8981\u7d20\u3067\u30c7\u30b6\u30a4\u30f3\u81ea\u7531\u306a\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u81ea\u4f5c\uff0f\u30b3\u30d4\u30daOK\u3011"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 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>confirm\u306b\u306f\u30c7\u30b6\u30a4\u30f3\u4ee5\u5916\u306e\u843d\u3068\u3057\u7a74\u3082\u3042\u308b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#confirm%E3%82%92%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%9E%E3%82%A4%E3%82%BA%E3%81%99%E3%82%8B3%E3%81%A4%E3%81%AE%E6%96%B9%E6%B3%95%E3%81%A8%E3%80%81%E4%BB%8A%E3%81%8A%E3%81%99%E3%81%99%E3%82%81%E3%81%AE%E9%81%B8%E6%8A%9E%E8%82%A2\" >confirm\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b3\u3064\u306e\u65b9\u6cd5\u3068\u3001\u4eca\u304a\u3059\u3059\u3081\u306e\u9078\u629e\u80a2<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#div%E3%81%A7%E8%87%AA%E4%BD%9C%E3%81%99%E3%82%8B%E6%96%B9%E6%B3%95%E3%81%AF%E3%80%8C%E3%82%84%E3%82%8B%E3%81%93%E3%81%A8%E5%A4%9A%E3%81%99%E3%81%8E%E5%95%8F%E9%A1%8C%E3%80%8D\" >div\u3067\u81ea\u4f5c\u3059\u308b\u65b9\u6cd5\u306f\u300c\u3084\u308b\u3053\u3068\u591a\u3059\u304e\u554f\u984c\u300d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%81%AF%E4%BE%BF%E5%88%A9%E3%81%A0%E3%81%91%E3%81%A9%E3%80%81%E7%A2%BA%E8%AA%8D%E3%83%80%E3%82%A4%E3%82%A2%E3%83%AD%E3%82%B01%E5%80%8B%E3%81%AE%E3%81%9F%E3%82%81%E3%81%AB%E3%81%AF%E9%87%8D%E3%81%84\" >\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u4fbf\u5229\u3060\u3051\u3069\u3001\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b01\u500b\u306e\u305f\u3081\u306b\u306f\u91cd\u3044<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E7%B5%90%E8%AB%96%EF%BC%9A%E4%BB%8A%E3%81%AF%E8%A6%81%E7%B4%A0%E3%81%8C%E7%AC%AC%E4%B8%80%E5%80%99%E8%A3%9C\" >\u7d50\u8ad6\uff1a\u4eca\u306f&lt;dialog&gt;\u8981\u7d20\u304c\u7b2c\u4e00\u5019\u88dc<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E3%80%90%E3%82%B3%E3%83%94%E3%83%9AOK%E3%80%91confirm%E3%82%92%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%9E%E3%82%A4%E3%82%BA%E3%81%97%E3%81%9F%E3%82%B5%E3%83%B3%E3%83%97%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%89%EF%BC%88HTML%E3%83%BBCSS%E3%83%BBJavaScript%EF%BC%89\" >\u3010\u30b3\u30d4\u30daOK\u3011confirm\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff08HTML\u30fbCSS\u30fbJavaScript\uff09<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#HTML\" >HTML<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#CSS\" >CSS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#JavaScript\" >JavaScript<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E3%82%B5%E3%83%B3%E3%83%97%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%89%E3%81%AE%E3%83%9D%E3%82%A4%E3%83%B3%E3%83%88%E8%A7%A3%E8%AA%AC\" >\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306e\u30dd\u30a4\u30f3\u30c8\u89e3\u8aac<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#show%E3%81%A7%E3%81%AF%E3%81%AA%E3%81%8FshowModal%E3%82%92%E4%BD%BF%E3%81%86\" >show()\u3067\u306f\u306a\u304fshowModal()\u3092\u4f7f\u3046<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#form_method%E2%80%9Ddialog%E2%80%9D%E3%81%A8returnValue%E3%81%A7%E3%81%A9%E3%81%AE%E3%83%9C%E3%82%BF%E3%83%B3%E3%81%8C%E6%8A%BC%E3%81%95%E3%82%8C%E3%81%9F%E3%81%8B%E5%88%A4%E5%AE%9A%E3%81%99%E3%82%8B\" >form method=&#8221;dialog&#8221;\u3068returnValue\u3067\u3069\u306e\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u304b\u5224\u5b9a\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#Promise%E3%81%A7%E3%83%A9%E3%83%83%E3%83%97%E3%81%97%E3%81%A6await%E3%81%A7%E6%9B%B8%E3%81%91%E3%82%8B%E3%82%88%E3%81%86%E3%81%AB%E3%81%99%E3%82%8B\" >Promise\u3067\u30e9\u30c3\u30d7\u3057\u3066await\u3067\u66f8\u3051\u308b\u3088\u3046\u306b\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#_backdrop%E3%81%A7%E8%83%8C%E6%99%AF%E3%81%AE%E6%9A%97%E5%B9%95%E3%82%92%E3%83%87%E3%82%B6%E3%82%A4%E3%83%B3%E3%81%99%E3%82%8B\" >::backdrop\u3067\u80cc\u666f\u306e\u6697\u5e55\u3092\u30c7\u30b6\u30a4\u30f3\u3059\u308b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%A0confirm%E3%82%92%E5%AE%9F%E5%8B%99%E3%81%AB%E5%85%A5%E3%82%8C%E3%82%8B%E3%81%A8%E3%81%8D%E3%81%AE%E6%B3%A8%E6%84%8F%E7%82%B9\" >\u30ab\u30b9\u30bf\u30e0confirm\u3092\u5b9f\u52d9\u306b\u5165\u308c\u308b\u3068\u304d\u306e\u6ce8\u610f\u70b9<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E3%83%95%E3%82%A9%E3%83%BC%E3%83%A0%E9%80%81%E4%BF%A1%E5%89%8D%E3%81%AE%E7%A2%BA%E8%AA%8D%E3%81%AFpreventDefault%E3%81%97%E3%81%A6%E3%81%8B%E3%82%89%E9%80%81%E3%82%8A%E7%9B%B4%E3%81%99\" >\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u524d\u306e\u78ba\u8a8d\u306fpreventDefault\u3057\u3066\u304b\u3089\u9001\u308a\u76f4\u3059<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E5%8D%B1%E9%99%BA%E3%81%AA%E6%93%8D%E4%BD%9C%E3%81%A7%E3%81%AF%E3%80%8C%E3%82%AD%E3%83%A3%E3%83%B3%E3%82%BB%E3%83%AB%E3%80%8D%E3%81%AB%E5%88%9D%E6%9C%9F%E3%83%95%E3%82%A9%E3%83%BC%E3%82%AB%E3%82%B9%E3%82%92%E5%BD%93%E3%81%A6%E3%82%8B\" >\u5371\u967a\u306a\u64cd\u4f5c\u3067\u306f\u300c\u30ad\u30e3\u30f3\u30bb\u30eb\u300d\u306b\u521d\u671f\u30d5\u30a9\u30fc\u30ab\u30b9\u3092\u5f53\u3066\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#confirm%E3%82%92%E5%AE%8C%E5%85%A8%E3%81%AB%E7%BD%AE%E3%81%8D%E6%8F%9B%E3%81%88%E3%82%89%E3%82%8C%E3%81%AA%E3%81%84%E5%A0%B4%E9%9D%A2%E3%82%82%E3%81%82%E3%82%8B\" >confirm\u3092\u5b8c\u5168\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u306a\u3044\u5834\u9762\u3082\u3042\u308b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E3%81%BE%E3%81%A8%E3%82%81\" >\u307e\u3068\u3081<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-confirm-custom\/#%E3%80%90%E5%8F%82%E8%80%83%E6%96%87%E7%8C%AE%E3%80%91\" >\u3010\u53c2\u8003\u6587\u732e\u3011<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">\u524a\u9664\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u305f\u3068\u304d\u306b\u300c\u672c\u5f53\u306b\u524a\u9664\u3057\u307e\u3059\u304b\uff1f\u300d\u3068\u51fa\u3059\u3001\u3042\u306eJavaScript\u306econfirm\u30c0\u30a4\u30a2\u30ed\u30b0\u3002\u624b\u8efd\u3067\u4fbf\u5229\u306a\u3093\u3067\u3059\u304c\u3001\u898b\u305f\u76ee\u304c\u30d6\u30e9\u30a6\u30b6\u4efb\u305b\u306a\u306e\u3067\u30b5\u30a4\u30c8\u306e\u30c7\u30b6\u30a4\u30f3\u304b\u3089\u3081\u3061\u3083\u304f\u3061\u3083\u6d6e\u304f\u3093\u3067\u3059\u3088\u306d\u3002\u30c7\u30b6\u30a4\u30ca\u30fc\u3055\u3093\u304b\u3089\u300c\u3053\u3053\u3060\u3051\u6025\u306bOS\u3063\u307d\u3044\u306e\u4f55\uff1f\u300d\u3068\u7a81\u3063\u8fbc\u307e\u308c\u305f\u7d4c\u9a13\u304c\u3042\u308b\u4eba\u3082\u591a\u3044\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u4eca\u56de\u306fconfirm\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u305f\u3044\u4eba\u5411\u3051\u306b\u3001\u30d0\u30cb\u30e9JS\u3068<code>&lt;dialog&gt;<\/code>\u8981\u7d20\u3060\u3051\u3067\u30c7\u30b6\u30a4\u30f3\u81ea\u7531\u306a\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u4f5c\u308b\u65b9\u6cd5\u3092\u3001HTML\u30fbCSS\u30fbJavaScript\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u4ed8\u304d\u3067\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%9D%E3%82%82%E3%81%9D%E3%82%82JavaScript%E3%81%AEconfirm%E3%81%AFCSS%E3%81%A7%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%9E%E3%82%A4%E3%82%BA%E3%81%A7%E3%81%8D%E3%81%AA%E3%81%84\"><\/span>\u305d\u3082\u305d\u3082JavaScript\u306econfirm()\u306fCSS\u3067\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u306a\u3044<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d50\u8ad6\u304b\u3089\u8a00\u3063\u3066\u3057\u307e\u3046\u3068\u3001<code>window.confirm()<\/code>\u306e\u898b\u305f\u76ee\u306fCSS\u3067\u306f\u4e00\u5207\u3044\u3058\u308c\u307e\u305b\u3093\u3002\u30dc\u30bf\u30f3\u306e\u8272\u3092\u5909\u3048\u305f\u3044\u3001\u89d2\u3092\u5c11\u3057\u843d\u3068\u3057\u305f\u3044\u3001\u30d5\u30a9\u30f3\u30c8\u3092\u30b5\u30a4\u30c8\u306b\u5408\u308f\u305b\u305f\u3044\u2026\u2026\u3068\u601d\u3063\u3066\u3082\u7121\u7406\u306a\u3093\u3067\u3059\u3002\u3068\u3044\u3046\u306e\u3082\u3001confirm\u306e\u30c0\u30a4\u30a2\u30ed\u30b0\u306f\u30da\u30fc\u30b8\u306eDOM\u5185\u306b\u3042\u308bHTML\u8981\u7d20\u3067\u306f\u306a\u304f\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u63d0\u4f9b\u3057\u3066\u3044\u308b\u30cd\u30a4\u30c6\u30a3\u30d6\u306eUI\u3060\u304b\u3089\u3067\u3059\u3002\u30da\u30fc\u30b8\u5074\u306eCSS\u30bb\u30ec\u30af\u30bf\u3067\u306f\u63b4\u307f\u3088\u3046\u304c\u306a\u3044\u3093\u3067\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MDN\u306e\u8aac\u660e\u3092\u8aad\u3080\u3068\u3001confirm\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u4ed8\u304d\u306e\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u8868\u793a\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u304cOK\u304b\u30ad\u30e3\u30f3\u30bb\u30eb\u3092\u62bc\u3059\u307e\u3067\u5f85\u3064\u3088\u3046<strong>\u30d6\u30e9\u30a6\u30b6\u306b\u6307\u793a\u3059\u308b<\/strong>\u30e1\u30bd\u30c3\u30c9\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u623b\u308a\u5024\u306fOK\u306a\u3089true\u3001\u30ad\u30e3\u30f3\u30bb\u30eb\u306a\u3089false\u306eboolean\u3067\u3059\u3002\u3064\u307e\u308a\u79c1\u305f\u3061\u958b\u767a\u8005\u304c\u6e21\u305b\u308b\u306e\u306f\u300c\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u6587\u5b57\u5217\u300d\u3060\u3051\u3002\u30dc\u30bf\u30f3\u306e\u6587\u8a00\u3092\u300c\u524a\u9664\u3059\u308b\u300d\u300c\u3084\u3081\u3066\u304a\u304f\u300d\u306b\u5909\u3048\u308b\u3053\u3068\u3059\u3089\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>if (window.confirm(&#39;\u672c\u5f53\u306b\u524a\u9664\u3057\u307e\u3059\u304b\uff1f&#39;)) {\n  deleteItem();\n}<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u624b\u8efd\u3055\u306f\u6b63\u76f4\u3042\u308a\u304c\u305f\u3044\u3067\u3059\u3002\u305f\u3060\u3001Chrome\u3068Safari\u3068Firefox\u3067\u898b\u305f\u76ee\u304c\u30d0\u30e9\u30d0\u30e9\u3067\u3001\u3057\u304b\u3082\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u5bfe\u5fdc\u306e\u30b5\u30a4\u30c8\u3060\u3068\u5b8c\u5168\u306b\u6d6e\u304d\u307e\u3059\u3002EC\u30b5\u30a4\u30c8\u306e\u8cfc\u5165\u30d5\u30ed\u30fc\u306a\u3069\u3067\u3053\u308c\u304c\u51fa\u308b\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u300c\u306a\u3093\u304b\u602a\u3057\u3044\u8b66\u544a\u304c\u51fa\u305f\u300d\u3068\u601d\u308f\u308c\u304b\u306d\u306a\u3044\u306e\u3082\u5730\u5473\u306b\u75db\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"confirm%E3%81%AB%E3%81%AF%E3%83%87%E3%82%B6%E3%82%A4%E3%83%B3%E4%BB%A5%E5%A4%96%E3%81%AE%E8%90%BD%E3%81%A8%E3%81%97%E7%A9%B4%E3%82%82%E3%81%82%E3%82%8B\"><\/span>confirm\u306b\u306f\u30c7\u30b6\u30a4\u30f3\u4ee5\u5916\u306e\u843d\u3068\u3057\u7a74\u3082\u3042\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u898b\u305f\u76ee\u3060\u3051\u306e\u554f\u984c\u304b\u3068\u3044\u3046\u3068\u3001\u305d\u3046\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002MDN\u306b\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30bf\u30d6\u3092\u5207\u308a\u66ff\u3048\u305f\u3068\u304d\u306a\u3069\u6761\u4ef6\u306b\u3088\u3063\u3066\u306f\u30c0\u30a4\u30a2\u30ed\u30b0\u304c\u8868\u793a\u3055\u308c\u306a\u304b\u3063\u305f\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u56de\u7b54\u3092\u5f85\u305f\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u5834\u5408\u304c\u3042\u308b\u3001\u3068\u660e\u8a18\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u30d6\u30e9\u30a6\u30b6\u304c\u30da\u30fc\u30b8\u5185\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u7121\u8996\u3057\u3066\u3044\u308b\u72b6\u614b\u3060\u3068\u3001\u623b\u308a\u5024\u306f\u5e38\u306bfalse\u306b\u306a\u308a\u307e\u3059\u3002\u300c\u30ad\u30e3\u30f3\u30bb\u30eb\u3057\u3066\u306a\u3044\u306e\u306b\u51e6\u7406\u304c\u6b62\u307e\u308b\u300d\u3068\u3044\u3046\u8b0e\u6319\u52d5\u306e\u539f\u56e0\u304c\u3053\u308c\u3060\u3063\u305f\u308a\u3059\u308b\u3093\u3067\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u3046\u4e00\u3064\u3001\u5b9f\u52d9\u3067\u906d\u9047\u3057\u3084\u3059\u3044\u306e\u304ciframe\u5185\u3067\u306e\u6319\u52d5\u3067\u3059\u3002iframe\u306e<code>sandbox<\/code>\u5c5e\u6027\u306b<code>allow-modals<\/code>\u304c\u4ed8\u3044\u3066\u3044\u306a\u3044\u3068confirm\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u307e\u3059\u3002CMS\u306e\u30d7\u30ec\u30d3\u30e5\u30fc\u753b\u9762\u3084\u57cb\u3081\u8fbc\u307f\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u306e\u4e2d\u3067\u300cconfirm\u304c\u51fa\u306a\u3044\uff01\u300d\u3068\u30cf\u30de\u3063\u305f\u3089\u3001\u307e\u305a\u3053\u3053\u3092\u7591\u3063\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u3061\u306a\u307f\u306b\u4eca\u56de\u7d39\u4ecb\u3059\u308bdialog\u8981\u7d20\u306f\u3001allow-modals\u304c\u306a\u304f\u3066\u3082\u4f7f\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"confirm%E3%82%92%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%9E%E3%82%A4%E3%82%BA%E3%81%99%E3%82%8B3%E3%81%A4%E3%81%AE%E6%96%B9%E6%B3%95%E3%81%A8%E3%80%81%E4%BB%8A%E3%81%8A%E3%81%99%E3%81%99%E3%82%81%E3%81%AE%E9%81%B8%E6%8A%9E%E8%82%A2\"><\/span>confirm\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b3\u3064\u306e\u65b9\u6cd5\u3068\u3001\u4eca\u304a\u3059\u3059\u3081\u306e\u9078\u629e\u80a2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">confirm\u305d\u306e\u3082\u306e\u306f\u5909\u3048\u3089\u308c\u306a\u3044\u306e\u3067\u3001\u300cconfirm\u3063\u307d\u304f\u52d5\u304f\u81ea\u524d\u306e\u30c0\u30a4\u30a2\u30ed\u30b0\u300d\u3092\u4f5c\u3063\u3066\u7f6e\u304d\u63db\u3048\u308b\u306e\u304c\u73fe\u5b9f\u7684\u306a\u7b54\u3048\u306b\u306a\u308a\u307e\u3059\u3002\u4f5c\u308a\u65b9\u306f\u5927\u304d\u304f\u5206\u3051\u30663\u30d1\u30bf\u30fc\u30f3\u3042\u308a\u307e\u3059\u3002\u6614\u306a\u304c\u3089\u306ediv\u3067\u81ea\u4f5c\u3059\u308b\u65b9\u6cd5\u3001HTML\u6a19\u6e96\u306e<code>&lt;dialog&gt;<\/code>\u8981\u7d20\u3092\u4f7f\u3046\u65b9\u6cd5\u3001\u305d\u3057\u3066SweetAlert2\u306e\u3088\u3046\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u983c\u308b\u65b9\u6cd5\u3067\u3059\u3002\u305d\u308c\u305e\u308c\u4e00\u9577\u4e00\u77ed\u3042\u308b\u306e\u3067\u3001\u3056\u3063\u304f\u308a\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u65b9\u6cd5<\/th><th>\u624b\u8efd\u3055<\/th><th>\u30c7\u30b6\u30a4\u30f3\u81ea\u7531\u5ea6<\/th><th>\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3<\/th><th>\u4f9d\u5b58<\/th><\/tr><tr><td>div\u3067\u81ea\u4f5c<\/td><td>\u25b3<\/td><td>\u25ce<\/td><td>\u00d7\uff08\u5168\u90e8\u81ea\u524d\uff09<\/td><td>\u306a\u3057<\/td><\/tr><tr><td><code>&lt;dialog&gt;<\/code>\u8981\u7d20<\/td><td>\u25cb<\/td><td>\u25ce<\/td><td>\u25cb\uff08\u30d6\u30e9\u30a6\u30b6\u4efb\u305b\u3067OK\uff09<\/td><td>\u306a\u3057<\/td><\/tr><tr><td>\u30e9\u30a4\u30d6\u30e9\u30ea<\/td><td>\u25ce<\/td><td>\u25cb<\/td><td>\u25cb<\/td><td>\u3042\u308a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"div%E3%81%A7%E8%87%AA%E4%BD%9C%E3%81%99%E3%82%8B%E6%96%B9%E6%B3%95%E3%81%AF%E3%80%8C%E3%82%84%E3%82%8B%E3%81%93%E3%81%A8%E5%A4%9A%E3%81%99%E3%81%8E%E5%95%8F%E9%A1%8C%E3%80%8D\"><\/span>div\u3067\u81ea\u4f5c\u3059\u308b\u65b9\u6cd5\u306f\u300c\u3084\u308b\u3053\u3068\u591a\u3059\u304e\u554f\u984c\u300d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u5e74\u524d\u307e\u3067\u306f\u3053\u308c\u304c\u5b9a\u756a\u3067\u3057\u305f\u3002\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u7528\u306ediv\u3092<code>position: fixed<\/code>\u3067\u5168\u9762\u306b\u6577\u3044\u3066\u3001\u305d\u306e\u4e0a\u306b\u30e2\u30fc\u30c0\u30eb\u672c\u4f53\u3092\u4e57\u305b\u308b\u3084\u3064\u3067\u3059\u3002\u898b\u305f\u76ee\u306f\u5b8c\u5168\u306b\u81ea\u7531\u3067\u3059\u304c\u3001ESC\u30ad\u30fc\u3067\u9589\u3058\u308b\u51e6\u7406\u3001\u80cc\u666f\u3092\u30af\u30ea\u30c3\u30af\u3067\u304d\u306a\u304f\u3059\u308b\u51e6\u7406\u3001\u30d5\u30a9\u30fc\u30ab\u30b9\u3092\u30e2\u30fc\u30c0\u30eb\u5185\u306b\u9589\u3058\u8fbc\u3081\u308b\u51e6\u7406\u3001<code>aria-modal<\/code>\u306e\u4ed8\u4e0e\u2026\u2026\u3068\u3001\u5730\u5473\u306a\u5b9f\u88c5\u304c\u3069\u3093\u3069\u3093\u7a4d\u307f\u4e0a\u304c\u3063\u3066\u3044\u304d\u307e\u3059\u3002\u3076\u3063\u3061\u3083\u3051\u3001\u3053\u3053\u3092\u5168\u90e8\u3061\u3083\u3093\u3068\u3084\u3063\u3066\u3044\u308b\u73fe\u5834\u306f\u304b\u306a\u308a\u5c11\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%81%AF%E4%BE%BF%E5%88%A9%E3%81%A0%E3%81%91%E3%81%A9%E3%80%81%E7%A2%BA%E8%AA%8D%E3%83%80%E3%82%A4%E3%82%A2%E3%83%AD%E3%82%B01%E5%80%8B%E3%81%AE%E3%81%9F%E3%82%81%E3%81%AB%E3%81%AF%E9%87%8D%E3%81%84\"><\/span>\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u4fbf\u5229\u3060\u3051\u3069\u3001\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b01\u500b\u306e\u305f\u3081\u306b\u306f\u91cd\u3044<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SweetAlert2\u306a\u3069\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u5165\u308c\u308c\u3070\u3001\u898b\u305f\u76ee\u3082\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3082\u4e00\u77ac\u3067\u6574\u3044\u307e\u3059\u3002\u305f\u3060\u3001\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u30921\u301c2\u7b87\u6240\u51fa\u3057\u305f\u3044\u3060\u3051\u306e\u305f\u3081\u306b\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8aad\u307f\u8fbc\u3080\u306e\u306f\u3001\u3061\u3087\u3063\u3068\u5927\u3052\u3055\u306a\u6c17\u3082\u3059\u308b\u3093\u3067\u3059\u3088\u306d\u3002\u30c7\u30b6\u30a4\u30f3\u3082\u30e9\u30a4\u30d6\u30e9\u30ea\u5074\u306e\u30af\u30bb\u304c\u6b8b\u308b\u306e\u3067\u3001\u30b5\u30a4\u30c8\u72ec\u81ea\u306e\u30c8\u30f3\u30de\u30ca\u306b\u5b8c\u5168\u306b\u5408\u308f\u305b\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u7d50\u5c40CSS\u306e\u4e0a\u66f8\u304d\u5408\u6226\u306b\u306a\u308a\u304c\u3061\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%B5%90%E8%AB%96%EF%BC%9A%E4%BB%8A%E3%81%AF%E8%A6%81%E7%B4%A0%E3%81%8C%E7%AC%AC%E4%B8%80%E5%80%99%E8%A3%9C\"><\/span>\u7d50\u8ad6\uff1a\u4eca\u306f<code>&lt;dialog&gt;<\/code>\u8981\u7d20\u304c\u7b2c\u4e00\u5019\u88dc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u3053\u3067\u4eca\u56de\u306e\u672c\u547d\u304c<code>&lt;dialog&gt;<\/code>\u8981\u7d20\u3067\u3059\u3002<code>showModal()<\/code>\u3067\u958b\u3051\u3070\u30e2\u30fc\u30c0\u30eb\u3068\u3057\u3066\u8868\u793a\u3055\u308c\u3001ESC\u30ad\u30fc\u3067\u9589\u3058\u308b\u6319\u52d5\u3082\u3001\u80cc\u666f\u3092\u64cd\u4f5c\u4e0d\u53ef\u306b\u3059\u308b\u6319\u52d5\u3082\u3001<code>aria-modal=\"true\"<\/code>\u76f8\u5f53\u306e\u6271\u3044\u3082\u30d6\u30e9\u30a6\u30b6\u304c\u52dd\u624b\u306b\u3084\u3063\u3066\u304f\u308c\u307e\u3059\u3002\u3057\u304b\u3082\u4e2d\u8eab\u306f\u305f\u3060\u306eHTML\u306a\u306e\u3067\u3001CSS\u3067\u597d\u304d\u306a\u3060\u3051\u30c7\u30b6\u30a4\u30f3\u3067\u304d\u307e\u3059\u3002MDN\u306econfirm\u306e\u30da\u30fc\u30b8\u3067\u3082\u3001\u78ba\u8a8d\u7528\u9014\u306b\u306f<code>&lt;dialog&gt;<\/code>\u8981\u7d20\u3092\u4f7f\u3046\u9078\u629e\u80a2\u304c\u7d39\u4ecb\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u516c\u5f0f\u306e\u304a\u58a8\u4ed8\u304d\u3068\u8a00\u3063\u3066\u3082\u3044\u3044\u3067\u3057\u3087\u3046\u3002\u3068\u306f\u3044\u3048\u300c\u4e00\u629e\u300d\u3068\u3044\u3046\u308f\u3051\u3067\u306f\u306a\u304f\u3001\u65e2\u5b58\u306eUI\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u30e2\u30fc\u30c0\u30eb\u3067\u7d71\u4e00\u3057\u3066\u3044\u308b\u73fe\u5834\u3084\u3001\u8907\u96d1\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u30fb\u72ec\u81ea\u306e\u30d5\u30a9\u30fc\u30ab\u30b9\u5236\u5fa1\u304c\u5fc5\u8981\u306a\u30b1\u30fc\u30b9\u3067\u306f\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u72ec\u81ea\u5b9f\u88c5\u3092\u9078\u3076\u306e\u3082\u5341\u5206\u30a2\u30ea\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%80%90%E3%82%B3%E3%83%94%E3%83%9AOK%E3%80%91confirm%E3%82%92%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%9E%E3%82%A4%E3%82%BA%E3%81%97%E3%81%9F%E3%82%B5%E3%83%B3%E3%83%97%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%89%EF%BC%88HTML%E3%83%BBCSS%E3%83%BBJavaScript%EF%BC%89\"><\/span>\u3010\u30b3\u30d4\u30daOK\u3011confirm\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff08HTML\u30fbCSS\u30fbJavaScript\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u524d\u7f6e\u304d\u304c\u9577\u304f\u306a\u3063\u305f\u306e\u3067\u3001\u3055\u3063\u305d\u304f\u30b3\u30fc\u30c9\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u4eca\u56de\u306f\u300c\u8a18\u4e8b\u3092\u524a\u9664\u3059\u308b\u300d\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3068\u3001\u30c7\u30b6\u30a4\u30f3\u3055\u308c\u305f\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u304c\u51fa\u3066\u304f\u308b\u30b5\u30f3\u30d7\u30eb\u3067\u3059\u3002\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u4e00\u5207\u4f7f\u308f\u305a\u3001\u30d0\u30cb\u30e9JS\u3060\u3051\u3067\u5b8c\u7d50\u3057\u3066\u3044\u307e\u3059\u3002\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u306b\u3082\u81ea\u52d5\u3067\u8ffd\u5f93\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305d\u306e\u307e\u307e\u30b3\u30d4\u30da\u3057\u3066\u52d5\u304b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"HTML\"><\/span>HTML<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30dd\u30a4\u30f3\u30c8\u306f<code>&lt;dialog&gt;<\/code>\u306e\u4e2d\u306b<code>&lt;form method=\"dialog\"&gt;<\/code>\u3092\u7f6e\u3044\u3066\u3044\u308b\u3068\u3053\u308d\u3067\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u305f\u3060\u3051\u3067\u30c0\u30a4\u30a2\u30ed\u30b0\u304c\u9589\u3058\u3066\u3001\u62bc\u3057\u305f\u30dc\u30bf\u30f3\u306e<code>value<\/code>\u304c<code>returnValue<\/code>\u306b\u5165\u308a\u307e\u3059\u3002JavaScript\u3067\u30dc\u30bf\u30f3\u3054\u3068\u306b\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u3092\u66f8\u304b\u306a\u304f\u3066\u3044\u3044\u306e\u3067\u3001\u304b\u306a\u308a\u30b9\u30c3\u30ad\u30ea\u3057\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;button type=&quot;button&quot; id=&quot;deleteBtn&quot; class=&quot;btn btn-primary&quot;&gt;\u8a18\u4e8b\u3092\u524a\u9664\u3059\u308b&lt;\/button&gt;\n\n&lt;dialog id=&quot;confirmDialog&quot; class=&quot;confirm-dialog&quot;\n  aria-labelledby=&quot;confirmTitle&quot; aria-describedby=&quot;confirmMessage&quot;&gt;\n  &lt;form method=&quot;dialog&quot; class=&quot;confirm-dialog__inner&quot;&gt;\n    &lt;h2 id=&quot;confirmTitle&quot; class=&quot;confirm-dialog__title&quot;&gt;\u78ba\u8a8d&lt;\/h2&gt;\n    &lt;p id=&quot;confirmMessage&quot; class=&quot;confirm-dialog__message&quot;&gt;&lt;\/p&gt;\n    &lt;div class=&quot;confirm-dialog__actions&quot;&gt;\n      &lt;button value=&quot;cancel&quot; class=&quot;btn btn-ghost&quot; autofocus&gt;\u30ad\u30e3\u30f3\u30bb\u30eb&lt;\/button&gt;\n      &lt;button value=&quot;ok&quot; class=&quot;btn btn-primary&quot;&gt;OK&lt;\/button&gt;\n    &lt;\/div&gt;\n  &lt;\/form&gt;\n&lt;\/dialog&gt;<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CSS\"><\/span>CSS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u898b\u305f\u76ee\u306f\u30df\u30cb\u30de\u30eb\u306b\u3001\u30dc\u30fc\u30c0\u30fc\u3067\u306f\u306a\u304f\u4f59\u767d\u3068\u5f71\u3067\u6d6e\u304b\u305b\u3066\u3044\u307e\u3059\u3002\u80cc\u666f\u306e\u6697\u5e55\u306f<code>::backdrop<\/code>\u7591\u4f3c\u8981\u7d20\u3067\u6307\u5b9a\u3067\u304d\u308b\u306e\u3067\u3001\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u7528\u306ediv\u306f\u3082\u3046\u8981\u308a\u307e\u305b\u3093\u3002\u8272\u306fCSS\u5909\u6570\u306b\u307e\u3068\u3081\u3066\u3001<code>prefers-color-scheme<\/code>\u3067\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u6642\u3060\u3051\u5dee\u3057\u66ff\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>:root {\n  --accent: #d90368;\n  --bg: #ffffff;\n  --text: #1f1f1f;\n  --muted: #6b6b6b;\n  --surface: #f2f2f2;\n}\n\n@media (prefers-color-scheme: dark) {\n  :root {\n    --bg: #1c1c1e;\n    --text: #f2f2f2;\n    --muted: #a0a0a0;\n    --surface: #2c2c2e;\n  }\n}\n\n.confirm-dialog {\n  width: min(90vw, 400px);\n  padding: 0;\n  border: none;\n  border-radius: 8px;\n  background: var(--bg);\n  color: var(--text);\n  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);\n}\n\n.confirm-dialog::backdrop {\n  background: rgba(0, 0, 0, 0.45);\n  backdrop-filter: blur(2px);\n}\n\n.confirm-dialog[open] {\n  animation: dialog-in 0.2s ease-out;\n}\n\n@keyframes dialog-in {\n  from { opacity: 0; transform: translateY(8px) scale(0.98); }\n  to   { opacity: 1; transform: none; }\n}\n\n.confirm-dialog__inner { padding: 32px 28px 24px; }\n.confirm-dialog__title { margin: 0 0 12px; font-size: 1.125rem; }\n.confirm-dialog__message {\n  margin: 0 0 28px;\n  color: var(--muted);\n  line-height: 1.7;\n  white-space: pre-wrap; \/* \\n \u3067\u6539\u884c\u3055\u305b\u308b *\/\n}\n.confirm-dialog__actions { display: flex; justify-content: flex-end; gap: 12px; }\n\n.btn {\n  padding: 10px 20px;\n  border: none;\n  border-radius: 4px;\n  font-size: 0.9375rem;\n  cursor: pointer;\n}\n.btn-ghost   { background: var(--surface); color: var(--text); }\n.btn-primary { background: var(--accent); color: #fff; }\n.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }\n\n\/* \u88dc\u52a9\uff1a\u8868\u793a\u4e2d\u306f\u80cc\u9762\u30da\u30fc\u30b8\u306e\u30b9\u30af\u30ed\u30fc\u30eb\u3082\u6b62\u3081\u308b\uff08\u4efb\u610f\uff09 *\/\nbody:has(dialog[open]) { overflow: hidden; }<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript\"><\/span>JavaScript<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>customConfirm()<\/code>\u3068\u3044\u3046\u95a2\u6570\u3092\u4f5c\u3063\u3066\u3001Promise\u3067\u7d50\u679c\u3092\u8fd4\u3059\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u5bb6\u306econfirm\u3068\u540c\u3058\u304f\u300cOK\u306a\u3089true\u3001\u305d\u308c\u4ee5\u5916\u306a\u3089false\u300d\u304c\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067\u3001<code>await<\/code>\u3092\u4ed8\u3051\u308c\u3070\u307b\u307c\u540c\u3058\u611f\u899a\u3067\u66f8\u3051\u307e\u3059\u3002\u30dc\u30bf\u30f3\u306e\u6587\u8a00\u3084\u30bf\u30a4\u30c8\u30eb\u3082\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u5909\u3048\u3089\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>const dialog = document.getElementById(&#39;confirmDialog&#39;);\nconst titleEl = document.getElementById(&#39;confirmTitle&#39;);\nconst messageEl = document.getElementById(&#39;confirmMessage&#39;);\nconst okBtn = dialog.querySelector(&#39;button[value=&quot;ok&quot;]&#39;);\nconst cancelBtn = dialog.querySelector(&#39;button[value=&quot;cancel&quot;]&#39;);\n\nfunction customConfirm(message, {\n  title = &#39;\u78ba\u8a8d&#39;,\n  okText = &#39;OK&#39;,\n  cancelText = &#39;\u30ad\u30e3\u30f3\u30bb\u30eb&#39;,\n} = {}) {\n  titleEl.textContent = title;\n  messageEl.textContent = message;\n  okBtn.textContent = okText;\n  cancelBtn.textContent = cancelText;\n  dialog.returnValue = &#39;&#39;; \/\/ \u524d\u56de\u306e\u5024\u3092\u30ea\u30bb\u30c3\u30c8\n  dialog.showModal();\n\n  return new Promise((resolve) =&gt; {\n    dialog.addEventListener(&#39;close&#39;, () =&gt; {\n      resolve(dialog.returnValue === &#39;ok&#39;);\n    }, { once: true });\n  });\n}\n\n\/\/ \u80cc\u666f\uff08::backdrop\uff09\u30af\u30ea\u30c3\u30af\u3067\u30ad\u30e3\u30f3\u30bb\u30eb\u6271\u3044\u306b\u3059\u308b\ndialog.addEventListener(&#39;click&#39;, (e) =&gt; {\n  if (e.target === dialog) dialog.close(&#39;cancel&#39;);\n});\n\n\/\/ \u4f7f\u3044\u65b9\ndocument.getElementById(&#39;deleteBtn&#39;).addEventListener(&#39;click&#39;, async () =&gt; {\n  const ok = await customConfirm(&#39;\u3053\u306e\u8a18\u4e8b\u3092\u524a\u9664\u3057\u307e\u3059\u3002\\n\u3053\u306e\u64cd\u4f5c\u306f\u53d6\u308a\u6d88\u305b\u307e\u305b\u3093\u3002&#39;, {\n    title: &#39;\u8a18\u4e8b\u3092\u524a\u9664\u3057\u307e\u3059\u304b\uff1f&#39;,\n    okText: &#39;\u524a\u9664\u3059\u308b&#39;,\n    cancelText: &#39;\u3084\u3081\u3066\u304a\u304f&#39;,\n  });\n\n  if (ok) {\n    console.log(&#39;\u524a\u9664\u51e6\u7406\u3092\u5b9f\u884c&#39;);\n  } else {\n    console.log(&#39;\u30ad\u30e3\u30f3\u30bb\u30eb\u3055\u308c\u307e\u3057\u305f&#39;);\n  }\n});<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%B5%E3%83%B3%E3%83%97%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%89%E3%81%AE%E3%83%9D%E3%82%A4%E3%83%B3%E3%83%88%E8%A7%A3%E8%AA%AC\"><\/span>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306e\u30dd\u30a4\u30f3\u30c8\u89e3\u8aac<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b3\u30d4\u30da\u3067\u52d5\u3051\u3070\u305d\u308c\u3067OK\u3001\u3068\u3044\u3046\u65b9\u306f\u3053\u3053\u3092\u8aad\u307f\u98db\u3070\u3057\u3066\u3082\u5927\u4e08\u592b\u3067\u3059\u3002\u305f\u3060\u3001\u3042\u3068\u3067\u300cESC\u3067\u9589\u3058\u305f\u3068\u304d\u306b\u5909\u306a\u5024\u304c\u8fd4\u3063\u3066\u304f\u308b\u300d\u300c2\u56de\u76ee\u4ee5\u964d\u306e\u6319\u52d5\u304c\u304a\u304b\u3057\u3044\u300d\u3068\u3044\u3063\u305f\u7d30\u304b\u3044\u30d0\u30b0\u306b\u60a9\u307e\u3055\u308c\u306a\u3044\u305f\u3081\u306b\u3082\u3001\u5404\u30d1\u30fc\u30c4\u304c\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304b\u306f\u62bc\u3055\u3048\u3066\u304a\u304f\u3068\u5b89\u5fc3\u3067\u3059\u3002\u7279\u306b\u5927\u4e8b\u306a4\u3064\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u9806\u756a\u306b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"show%E3%81%A7%E3%81%AF%E3%81%AA%E3%81%8FshowModal%E3%82%92%E4%BD%BF%E3%81%86\"><\/span>show()\u3067\u306f\u306a\u304fshowModal()\u3092\u4f7f\u3046<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>&lt;dialog&gt;<\/code>\u3092\u958b\u304f\u30e1\u30bd\u30c3\u30c9\u306b\u306f<code>show()<\/code>\u3068<code>showModal()<\/code>\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002confirm\u306e\u4ee3\u308f\u308a\u3068\u3057\u3066\u4f7f\u3046\u306a\u3089\u3001\u5fc5\u305a<code>showModal()<\/code>\u306e\u65b9\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<code>showModal()<\/code>\u3067\u958b\u3044\u305f\u30c0\u30a4\u30a2\u30ed\u30b0\u306f\u6700\u524d\u9762\u306e\u30c8\u30c3\u30d7\u30ec\u30a4\u30e4\u30fc\u306b\u8868\u793a\u3055\u308c\u3001\u80cc\u9762\u306e\u30da\u30fc\u30b8\u306f\u64cd\u4f5c\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002ESC\u30ad\u30fc\u3067\u9589\u3058\u308b\u6319\u52d5\u3082\u3053\u3061\u3089\u3060\u3051\u306e\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>show()<\/code>\u3067\u958b\u304f\u3068\u3001\u305f\u3060\u30da\u30fc\u30b8\u4e0a\u306b\u8981\u7d20\u304c\u73fe\u308c\u308b\u3060\u3051\u306e\u300c\u975e\u30e2\u30fc\u30c0\u30eb\u300d\u306a\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002\u80cc\u9762\u306e\u30dc\u30bf\u30f3\u3082\u666e\u901a\u306b\u62bc\u305b\u3066\u3057\u307e\u3046\u306e\u3067\u3001\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u3068\u3057\u3066\u306f\u610f\u5473\u304c\u3042\u308a\u307e\u305b\u3093\u3002MDN\u306b\u3088\u308b\u3068\u3001<code>showModal()<\/code>\u3067\u958b\u3044\u305f\u5834\u5408\u306f\u6697\u9ed9\u7684\u306b<code>aria-modal=\"true\"<\/code>\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u306e\u3067\u3001\u30b9\u30af\u30ea\u30fc\u30f3\u30ea\u30fc\u30c0\u30fc\u3078\u306e\u914d\u616e\u3068\u3044\u3046\u9762\u3067\u3082\u3053\u3061\u3089\u4e00\u629e\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"form_method%E2%80%9Ddialog%E2%80%9D%E3%81%A8returnValue%E3%81%A7%E3%81%A9%E3%81%AE%E3%83%9C%E3%82%BF%E3%83%B3%E3%81%8C%E6%8A%BC%E3%81%95%E3%82%8C%E3%81%9F%E3%81%8B%E5%88%A4%E5%AE%9A%E3%81%99%E3%82%8B\"><\/span>form method=&#8221;dialog&#8221;\u3068returnValue\u3067\u3069\u306e\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u304b\u5224\u5b9a\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>&lt;dialog&gt;<\/code>\u5185\u306eform\u3092<code>method=\"dialog\"<\/code>\u3067\u9001\u4fe1\u3059\u308b\u3068\u3001\u30c0\u30a4\u30a2\u30ed\u30b0\u304c\u9589\u3058\u3066\u3001\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u30dc\u30bf\u30f3\u306e<code>value<\/code>\u304c<code>returnValue<\/code>\u306b\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u304c\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4eca\u56de\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001OK\u30dc\u30bf\u30f3\u306b<code>value=\"ok\"<\/code>\u3001\u30ad\u30e3\u30f3\u30bb\u30eb\u30dc\u30bf\u30f3\u306b<code>value=\"cancel\"<\/code>\u3092\u4ed8\u3051\u3066\u3001\u9589\u3058\u305f\u3042\u3068\u306b<code>returnValue<\/code>\u3092\u898b\u3066\u5224\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u5730\u5473\u306b\u5927\u4e8b\u306a\u306e\u304c\u3001\u958b\u304f\u305f\u3073\u306b<code>dialog.returnValue = ''<\/code>\u3067\u30ea\u30bb\u30c3\u30c8\u3057\u3066\u3044\u308b\u70b9\u3067\u3059\u3002ESC\u30ad\u30fc\u3067\u9589\u3058\u305f\u5834\u5408\u306f<code>returnValue<\/code>\u304c\u66f4\u65b0\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u30ea\u30bb\u30c3\u30c8\u3057\u306a\u3044\u3068\u524d\u56de\u62bc\u3057\u305f\u30dc\u30bf\u30f3\u306e\u5024\u304c\u6b8b\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u524d\u56deOK\u3092\u62bc\u3057\u3066\u3044\u308b\u3068\u3001ESC\u3067\u9589\u3058\u305f\u306e\u306b\u524a\u9664\u304c\u5b9f\u884c\u3055\u308c\u308b\u2026\u2026\u3068\u3044\u3046\u6050\u308d\u3057\u3044\u4e8b\u6545\u304c\u8d77\u304d\u308b\u306e\u3067\u3001\u3053\u3053\u306f\u7d76\u5bfe\u306b\u7701\u7565\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Promise%E3%81%A7%E3%83%A9%E3%83%83%E3%83%97%E3%81%97%E3%81%A6await%E3%81%A7%E6%9B%B8%E3%81%91%E3%82%8B%E3%82%88%E3%81%86%E3%81%AB%E3%81%99%E3%82%8B\"><\/span>Promise\u3067\u30e9\u30c3\u30d7\u3057\u3066await\u3067\u66f8\u3051\u308b\u3088\u3046\u306b\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u5bb6\u306econfirm\u306f\u51e6\u7406\u3092\u540c\u671f\u7684\u306b\u6b62\u3081\u3066\u304f\u308c\u307e\u3059\u304c\u3001\u81ea\u4f5c\u30c0\u30a4\u30a2\u30ed\u30b0\u306f\u305d\u3046\u306f\u3044\u304d\u307e\u305b\u3093\u3002\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u958b\u3044\u305f\u77ac\u9593\u306b\u5f8c\u7d9a\u306e\u51e6\u7406\u304c\u8d70\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u305d\u3053\u3067<code>close<\/code>\u30a4\u30d9\u30f3\u30c8\u3092\u5f85\u3064Promise\u3092\u8fd4\u3059\u3088\u3046\u306b\u3057\u3066\u3001<code>await customConfirm(...)<\/code>\u3068\u66f8\u3051\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3067<code>if (confirm(...))<\/code>\u3068\u307b\u307c\u540c\u3058\u66f8\u304d\u5473\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>addEventListener<\/code>\u306e\u7b2c3\u5f15\u6570\u306b<code>{ once: true }<\/code>\u3092\u4ed8\u3051\u3066\u3044\u308b\u306e\u3082\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002\u3053\u308c\u3092\u4ed8\u3051\u306a\u3044\u3068\u3001\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u958b\u304f\u305f\u3073\u306bclose\u30a4\u30d9\u30f3\u30c8\u306e\u30ea\u30b9\u30ca\u30fc\u304c\u7a4d\u307f\u91cd\u306a\u3063\u3066\u3044\u304d\u307e\u3059\u3002\u4f55\u5ea6\u304b\u958b\u9589\u3057\u305f\u3042\u3068\u306b\u3001\u6614\u306ePromise\u304c\u307e\u3068\u3081\u3066\u89e3\u6c7a\u3055\u308c\u3066\u51e6\u7406\u304c\u591a\u91cd\u5b9f\u884c\u3055\u308c\u308b\u3001\u3068\u3044\u3046\u306a\u304b\u306a\u304b\u6c17\u4ed8\u304d\u306b\u304f\u3044\u30d0\u30b0\u306e\u539f\u56e0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"_backdrop%E3%81%A7%E8%83%8C%E6%99%AF%E3%81%AE%E6%9A%97%E5%B9%95%E3%82%92%E3%83%87%E3%82%B6%E3%82%A4%E3%83%B3%E3%81%99%E3%82%8B\"><\/span>::backdrop\u3067\u80cc\u666f\u306e\u6697\u5e55\u3092\u30c7\u30b6\u30a4\u30f3\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>showModal()<\/code>\u3067\u958b\u3044\u305f\u30c0\u30a4\u30a2\u30ed\u30b0\u306e\u80cc\u9762\u306b\u306f\u3001<code>::backdrop<\/code>\u3068\u3044\u3046\u7591\u4f3c\u8981\u7d20\u304c\u81ea\u52d5\u3067\u6577\u304b\u308c\u307e\u3059\u3002\u4eca\u56de\u306f\u534a\u900f\u660e\u306e\u9ed2\u306b<code>backdrop-filter: blur(2px)<\/code>\u3092\u8db3\u3057\u3066\u3001\u80cc\u666f\u3092\u3046\u3063\u3059\u3089\u307c\u304b\u3057\u3066\u307f\u307e\u3057\u305f\u3002\u6614\u306f\u3053\u306e\u305f\u3081\u306b\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u7528\u306ediv\u3092\u7528\u610f\u3057\u3066z-index\u3068\u683c\u95d8\u3057\u3066\u3044\u305f\u306e\u3067\u3001\u3060\u3044\u3076\u697d\u306b\u306a\u308a\u307e\u3057\u305f\u306d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3061\u306a\u307f\u306b\u80cc\u666f\u30af\u30ea\u30c3\u30af\u3067\u9589\u3058\u308b\u51e6\u7406\u306f\u3001\u30c0\u30a4\u30a2\u30ed\u30b0\u672c\u4f53\u306e<code>padding<\/code>\u30920\u306b\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u8981\u7d20\u304c<code>dialog<\/code>\u81ea\u8eab\u304b\u3069\u3046\u304b\u3067\u5224\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u4e2d\u8eab\u306eform\u304c\u5168\u9762\u3092\u8986\u3063\u3066\u3044\u308b\u306e\u3067\u3001<code>e.target === dialog<\/code>\u306b\u306a\u308b\u306e\u306f<code>::backdrop<\/code>\u90e8\u5206\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u3068\u304d\u3060\u3051\u3001\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002Chrome\u306a\u3069\u3067\u306f<code>closedby=\"any\"<\/code>\u5c5e\u6027\u3067\u3082\u540c\u3058\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001Safari\u3067\u306f2026\u5e74\u73fe\u5728\u3001\u901a\u5e38\u7248\u3067\u306f\u307e\u3060\u5bfe\u5fdc\u3057\u3066\u304a\u3089\u305a\u3001Technology Preview\u306a\u3069\u3067\u5bfe\u5fdc\u304c\u9032\u3093\u3067\u3044\u308b\u6bb5\u968e\u3067\u3059\u3002\u53e4\u3044Safari\u3084iOS\u7aef\u672b\u3082\u8003\u3048\u308b\u3068\u3001\u73fe\u6642\u70b9\u3067\u306fJavaScript\u306b\u3088\u308b\u5b9f\u88c5\u3092\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u3057\u3066\u7528\u610f\u3057\u3066\u304a\u304f\u306e\u304c\u7121\u96e3\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%A0confirm%E3%82%92%E5%AE%9F%E5%8B%99%E3%81%AB%E5%85%A5%E3%82%8C%E3%82%8B%E3%81%A8%E3%81%8D%E3%81%AE%E6%B3%A8%E6%84%8F%E7%82%B9\"><\/span>\u30ab\u30b9\u30bf\u30e0confirm\u3092\u5b9f\u52d9\u306b\u5165\u308c\u308b\u3068\u304d\u306e\u6ce8\u610f\u70b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30f3\u30d7\u30eb\u3092\u305d\u306e\u307e\u307e\u4f7f\u3048\u3070\u5927\u4f53\u306e\u5834\u9762\u306f\u30ab\u30d0\u30fc\u3067\u304d\u307e\u3059\u304c\u3001\u5b9f\u969b\u306e\u6848\u4ef6\u306b\u7d44\u307f\u8fbc\u3082\u3046\u3068\u3059\u308b\u3068\u300c\u3042\u308c\uff1f\u300d\u3068\u306a\u308b\u30dd\u30a4\u30f3\u30c8\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001confirm\u3092\u81ea\u4f5c\u30c0\u30a4\u30a2\u30ed\u30b0\u306b\u7f6e\u304d\u63db\u3048\u308b\u3068\u304d\u306b\u7279\u306b\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u3068\u3053\u308d\u3092\u307e\u3068\u3081\u3066\u304a\u304d\u307e\u3059\u3002\u5168\u90e8\u899a\u3048\u308b\u5fc5\u8981\u306f\u306a\u3044\u306e\u3067\u3001\u30cf\u30de\u3063\u305f\u3068\u304d\u306b\u601d\u3044\u51fa\u3057\u3066\u3082\u3089\u3048\u308c\u3070OK\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%83%95%E3%82%A9%E3%83%BC%E3%83%A0%E9%80%81%E4%BF%A1%E5%89%8D%E3%81%AE%E7%A2%BA%E8%AA%8D%E3%81%AFpreventDefault%E3%81%97%E3%81%A6%E3%81%8B%E3%82%89%E9%80%81%E3%82%8A%E7%9B%B4%E3%81%99\"><\/span>\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u524d\u306e\u78ba\u8a8d\u306fpreventDefault\u3057\u3066\u304b\u3089\u9001\u308a\u76f4\u3059<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u756a\u591a\u3044\u306e\u304c\u3053\u308c\u3067\u3059\u3002\u672c\u5bb6\u306econfirm\u306a\u3089<code>onsubmit=\"return confirm('\u9001\u4fe1\u3057\u307e\u3059\u304b\uff1f')\"<\/code>\u306e\u4e00\u884c\u3067\u6e08\u3093\u3067\u3044\u305f\u3082\u306e\u304c\u3001\u81ea\u4f5c\u30c0\u30a4\u30a2\u30ed\u30b0\u3060\u3068\u305d\u306e\u307e\u307e\u3067\u306f\u52d5\u304d\u307e\u305b\u3093\u3002Promise\u306e\u7d50\u679c\u3092\u5f85\u3063\u3066\u3044\u308b\u9593\u306b\u3001\u30d5\u30a9\u30fc\u30e0\u304c\u3055\u3063\u3055\u3068\u9001\u4fe1\u3055\u308c\u3066\u3057\u307e\u3046\u304b\u3089\u3067\u3059\u3002\u4e00\u5ea6<code>e.preventDefault()<\/code>\u3067\u9001\u4fe1\u3092\u6b62\u3081\u3066\u3001OK\u3060\u3063\u305f\u3089<code>form.submit()<\/code>\u3084<code>requestSubmit()<\/code>\u3067\u6539\u3081\u3066\u9001\u4fe1\u3059\u308b\u3001\u3068\u3044\u3046\u6d41\u308c\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>form.addEventListener(&#39;submit&#39;, async (e) =&gt; {\n  if (form.dataset.confirmed) return; \/\/ \u78ba\u8a8d\u6e08\u307f\u306e\u518d\u9001\u4fe1\u3060\u3051\u7d20\u901a\u308a\n  e.preventDefault();\n\n  if (await customConfirm(&#39;\u3053\u306e\u5185\u5bb9\u3067\u9001\u4fe1\u3057\u307e\u3059\u304b\uff1f&#39;)) {\n    form.dataset.confirmed = &#39;true&#39;;\n    form.requestSubmit(); \/\/ submit\u30a4\u30d9\u30f3\u30c8\u306f\u540c\u671f\u7684\u306b\u767a\u706b\u3059\u308b\n    delete form.dataset.confirmed; \/\/ \u30d5\u30e9\u30b0\u306f\u3059\u3050\u89e3\u9664\n  }\n});<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u306f\u3001\u78ba\u8a8d\u5f8c\u306b\u30d7\u30ed\u30b0\u30e9\u30e0\u304b\u3089\u518d\u9001\u4fe1\u3059\u308b\u3068\u304d\u306b\u3001\u3082\u3046\u4e00\u5ea6\u78ba\u8a8d\u51e6\u7406\u306b\u5165\u3089\u306a\u3044\u3088\u3046\u4e00\u6642\u7684\u306a\u30d5\u30e9\u30b0\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002\u30d5\u30e9\u30b0\u3092\u7acb\u3066\u3063\u3071\u306a\u3057\u306b\u3059\u308b\u3068\u3001\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30a8\u30e9\u30fc\u3067\u5dee\u3057\u623b\u3055\u308c\u305f\u3042\u3068\u306e\u518d\u9001\u4fe1\u3067\u78ba\u8a8d\u304c\u51fa\u306a\u304f\u306a\u308b\u306e\u3067\u3001<code>requestSubmit()<\/code>\u306e\u76f4\u5f8c\u306b\u89e3\u9664\u3057\u3066\u3044\u308b\u306e\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002\u5b9f\u969b\u306e\u30d5\u30a9\u30fc\u30e0\u3067\u306f\u3001Ajax\u9001\u4fe1\u3084\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u3082\u542b\u3081\u3066\u3001\u30d5\u30e9\u30b0\u306e\u89e3\u9664\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u8a2d\u8a08\u3057\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u81ea\u4f53\u306b\u3082<code>&lt;form&gt;<\/code>\u3092\u4f7f\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u9001\u4fe1\u3057\u305f\u3044\u30d5\u30a9\u30fc\u30e0\u306e<strong>\u5185\u5074\u306b\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u7f6e\u304b\u306a\u3044<\/strong>\u3088\u3046\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002form\u306e\u5165\u308c\u5b50\u306fHTML\u3068\u3057\u3066\u4e0d\u6b63\u306a\u306e\u3067\u3001\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u3063\u3066\u306f\u5185\u5074\u306eform\u304c\u7121\u8996\u3055\u308c\u3066\u4e88\u671f\u3057\u306a\u3044\u9001\u4fe1\u304c\u8d70\u308a\u307e\u3059\u3002\u30c0\u30a4\u30a2\u30ed\u30b0\u306f<code>body<\/code>\u76f4\u4e0b\u306a\u3069\u3001\u30d5\u30a9\u30fc\u30e0\u306e\u5916\u306b\u7f6e\u3044\u3066\u304a\u304f\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8D%B1%E9%99%BA%E3%81%AA%E6%93%8D%E4%BD%9C%E3%81%A7%E3%81%AF%E3%80%8C%E3%82%AD%E3%83%A3%E3%83%B3%E3%82%BB%E3%83%AB%E3%80%8D%E3%81%AB%E5%88%9D%E6%9C%9F%E3%83%95%E3%82%A9%E3%83%BC%E3%82%AB%E3%82%B9%E3%82%92%E5%BD%93%E3%81%A6%E3%82%8B\"><\/span>\u5371\u967a\u306a\u64cd\u4f5c\u3067\u306f\u300c\u30ad\u30e3\u30f3\u30bb\u30eb\u300d\u306b\u521d\u671f\u30d5\u30a9\u30fc\u30ab\u30b9\u3092\u5f53\u3066\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u30ad\u30e3\u30f3\u30bb\u30eb\u30dc\u30bf\u30f3\u306b<code>autofocus<\/code>\u5c5e\u6027\u3092\u4ed8\u3051\u3066\u3044\u307e\u3059\u3002<code>showModal()<\/code>\u3067\u958b\u3044\u305f\u3068\u304d\u3001\u30c0\u30a4\u30a2\u30ed\u30b0\u5185\u306e<code>autofocus<\/code>\u4ed8\u304d\u8981\u7d20\u306b\u30d5\u30a9\u30fc\u30ab\u30b9\u304c\u79fb\u308b\u306e\u3067\u3001\u521d\u671f\u30d5\u30a9\u30fc\u30ab\u30b9\u304c\u30ad\u30e3\u30f3\u30bb\u30eb\u5074\u306b\u306a\u308a\u3001\u3046\u3063\u304b\u308aEnter\u30ad\u30fc\u3092\u62bc\u3057\u3066\u3057\u307e\u3063\u3066\u3082\u8aa4\u3063\u3066\u524a\u9664\u3055\u308c\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002\u524a\u9664\u3084\u6c7a\u6e08\u306e\u3088\u3046\u306a\u53d6\u308a\u8fd4\u3057\u306e\u3064\u304b\u306a\u3044\u64cd\u4f5c\u307b\u3069\u3001\u5b89\u5168\u5074\u306e\u30dc\u30bf\u30f3\u3092\u521d\u671f\u9078\u629e\u306b\u3057\u3066\u304a\u304f\u306e\u304cUI\u7684\u306b\u3082\u89aa\u5207\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9006\u306b\u300c\u4fdd\u5b58\u3057\u307e\u3059\u304b\uff1f\u300d\u306e\u3088\u3046\u306b\u3001OK\u304c\u57fa\u672c\u30eb\u30fc\u30c8\u306b\u306a\u308b\u78ba\u8a8d\u306a\u3089OK\u30dc\u30bf\u30f3\u306b<code>autofocus<\/code>\u3092\u79fb\u3057\u3066\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u3042\u305f\u308a\u306f\u672c\u5bb6\u306econfirm\u3067\u306f\u5236\u5fa1\u3067\u304d\u306a\u304b\u3063\u305f\u90e8\u5206\u306a\u306e\u3067\u3001\u81ea\u4f5c\u306a\u3089\u3067\u306f\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u8a00\u3048\u307e\u3059\u306d\u3002\u30d5\u30a9\u30fc\u30ab\u30b9\u30ea\u30f3\u30b0\u3082<code>:focus-visible<\/code>\u3067\u30a2\u30af\u30bb\u30f3\u30c8\u30ab\u30e9\u30fc\u306b\u3057\u3066\u304a\u304f\u3068\u3001\u30ad\u30fc\u30dc\u30fc\u30c9\u64cd\u4f5c\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u3082\u5206\u304b\u308a\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"confirm%E3%82%92%E5%AE%8C%E5%85%A8%E3%81%AB%E7%BD%AE%E3%81%8D%E6%8F%9B%E3%81%88%E3%82%89%E3%82%8C%E3%81%AA%E3%81%84%E5%A0%B4%E9%9D%A2%E3%82%82%E3%81%82%E3%82%8B\"><\/span>confirm\u3092\u5b8c\u5168\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u306a\u3044\u5834\u9762\u3082\u3042\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u5f8c\u306b\u4e00\u3064\u3060\u3051\u3002\u81ea\u4f5c\u30c0\u30a4\u30a2\u30ed\u30b0\u306f\u975e\u540c\u671f\u306a\u306e\u3067\u3001\u51e6\u7406\u3092\u540c\u671f\u7684\u306b\u6b62\u3081\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u9762\u3067\u306fconfirm\u306e\u4ee3\u308f\u308a\u306b\u306a\u308a\u307e\u305b\u3093\u3002\u4ee3\u8868\u4f8b\u304c\u30da\u30fc\u30b8\u96e2\u8131\u6642\u306e<code>beforeunload<\/code>\u3067\u3059\u3002\u3053\u3053\u306f\u30d6\u30e9\u30a6\u30b6\u6a19\u6e96\u306e\u78ba\u8a8d\u3057\u304b\u51fa\u305b\u306a\u3044\u4ed5\u69d8\u306a\u306e\u3067\u3001\u30c7\u30b6\u30a4\u30f3\u3092\u63c3\u3048\u305f\u304f\u3066\u3082\u8ae6\u3081\u308b\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u306f\u3044\u3048\u3001\u524a\u9664\u30fb\u9001\u4fe1\u30fb\u30ed\u30b0\u30a2\u30a6\u30c8\u3068\u3044\u3063\u305f\u666e\u6bb5\u306e\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u306f\u3001\u591a\u304f\u306e\u5834\u9762\u3067\u4eca\u56de\u306e\u65b9\u6cd5\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u307e\u3059\u3002EC\u30b5\u30a4\u30c8\u306e\u30ab\u30fc\u30c8\u524a\u9664\u3084\u30de\u30a4\u30da\u30fc\u30b8\u306e\u9000\u4f1a\u30dc\u30bf\u30f3\u306a\u3069\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u76ee\u306b\u89e6\u308c\u3084\u3059\u3044\u5834\u6240\u304b\u3089\u9806\u756a\u306b\u5dee\u3057\u66ff\u3048\u3066\u3044\u304f\u3068\u3001\u30b5\u30a4\u30c8\u5168\u4f53\u306e\u7d71\u4e00\u611f\u304c\u30b0\u30c3\u3068\u4e0a\u304c\u308a\u307e\u3059\u3088\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u304b\u304c\u3067\u3057\u305f\u3067\u3057\u3087\u3046\u304b\uff1fJavaScript\u306econfirm\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u30cd\u30a4\u30c6\u30a3\u30d6UI\u306a\u306e\u3067\u3001CSS\u3067\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u30c7\u30b6\u30a4\u30f3\u3092\u63c3\u3048\u305f\u3044\u306a\u3089\u3001confirm\u3063\u307d\u304f\u52d5\u304f\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u81ea\u4f5c\u3057\u3066\u7f6e\u304d\u63db\u3048\u308b\u306e\u304c\u6b63\u89e3\u3067\u3059\u3002\u305d\u3057\u3066\u4eca\u306a\u3089\u3001HTML\u6a19\u6e96\u306e<code>&lt;dialog&gt;<\/code>\u8981\u7d20\u3092\u4f7f\u3046\u306e\u304c\u624b\u8efd\u3067\u6709\u529b\u306a\u65b9\u6cd5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u30dd\u30a4\u30f3\u30c8\u3092\u304a\u3055\u3089\u3044\u3059\u308b\u3068\u3001\u307e\u305a\u958b\u304f\u3068\u304d\u306f<code>show()<\/code>\u3067\u306f\u306a\u304f<code>showModal()<\/code>\u3092\u4f7f\u3046\u3053\u3068\u3002\u30dc\u30bf\u30f3\u306e\u5224\u5b9a\u306f<code>&lt;form method=\"dialog\"&gt;<\/code>\u3068<code>returnValue<\/code>\u306b\u4efb\u305b\u3066\u3001\u958b\u304f\u305f\u3073\u306b<code>returnValue<\/code>\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u3053\u3068\u3002\u305d\u3057\u3066Promise\u3067\u30e9\u30c3\u30d7\u3057\u3066<code>await<\/code>\u3067\u66f8\u3051\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3002\u3053\u306e3\u3064\u3055\u3048\u5b88\u308c\u3070\u3001\u672c\u5bb6confirm\u3068\u307b\u307c\u540c\u3058\u611f\u899a\u3067\u3001\u898b\u305f\u76ee\u3060\u3051\u81ea\u7531\u306b\u30c7\u30b6\u30a4\u30f3\u3067\u304d\u308b\u78ba\u8a8d\u30c0\u30a4\u30a2\u30ed\u30b0\u304c\u624b\u306b\u5165\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">div\u3067\u5168\u90e8\u81ea\u4f5c\u3057\u3066\u3044\u305f\u9803\u306f\u3001ESC\u30ad\u30fc\u5bfe\u5fdc\u3084\u30d5\u30a9\u30fc\u30ab\u30b9\u7ba1\u7406\u3001\u80cc\u666f\u306e\u30b9\u30af\u30ed\u30fc\u30eb\u5236\u5fa1\u307e\u3067\u81ea\u524d\u3067\u66f8\u304f\u5fc5\u8981\u304c\u3042\u3063\u3066\u3001\u6b63\u76f4\u304b\u306a\u308a\u9762\u5012\u3067\u3057\u305f\u3002\u305d\u308c\u304c\u30d6\u30e9\u30a6\u30b6\u6a19\u6e96\u306e\u6a5f\u80fd\u3060\u3051\u3067\u3053\u3053\u307e\u3067\u30b9\u30c3\u30ad\u30ea\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u306e\u306f\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u3057\u3066\u306f\u7d20\u76f4\u306b\u3046\u308c\u3057\u3044\u3068\u3053\u308d\u3067\u3059\u3002\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u983c\u3089\u306a\u304f\u3066\u3044\u3044\u306e\u3067\u3001\u8aad\u307f\u8fbc\u307f\u901f\u5ea6\u3084\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u9762\u3067\u3082\u5b89\u5fc3\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u56de\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u306b\u3082\u81ea\u52d5\u3067\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305d\u306e\u307e\u307e\u30b3\u30d4\u30da\u3057\u3066\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u7d44\u307f\u8fbc\u3093\u3067\u3082\u5927\u4e08\u592b\u3067\u3059\u3002\u8272\u3084\u4f59\u767d\u3092\u30b5\u30a4\u30c8\u306e\u30c7\u30b6\u30a4\u30f3\u306b\u5408\u308f\u305b\u3066\u8abf\u6574\u3059\u308c\u3070\u3001\u300c\u3053\u3053\u3060\u3051OS\u3063\u307d\u3044\u300d\u554f\u984c\u3068\u306f\u304a\u3055\u3089\u3070\u3067\u304d\u307e\u3059\u3002\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30ea\u30c6\u30e9\u30eb\u3092\u4f7f\u3063\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u7d44\u307f\u7acb\u3066\u308b\u65b9\u6cd5\u306f\u300eJavaScript\u306e\u6587\u5b57\u5217\u3092\u30b9\u30c3\u30ad\u30ea\u8907\u6570\u884c\u3067\u66f8\u304f\u65b9\u6cd5\u3010\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30ea\u30c6\u30e9\u30eb\u3011\u300f\u3001\u30c0\u30a4\u30a2\u30ed\u30b0\u306e\u6319\u52d5\u78ba\u8a8d\u306b\u306f\u300eGoogle Chrome\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u306e\u30b7\u30e7\u30fc\u30c8\u30ab\u30c3\u30c8\u304a\u30b9\u30b9\u30e110\u9078\u300f\u306e\u8a18\u4e8b\u3082\u3042\u308f\u305b\u3066\u3069\u3046\u305e\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%80%90%E5%8F%82%E8%80%83%E6%96%87%E7%8C%AE%E3%80%91\"><\/span>\u3010\u53c2\u8003\u6587\u732e\u3011<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/API\/Window\/confirm\" target=\"_blank\" rel=\"noopener\">Window: confirm() method &#8211; MDN Web Docs<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/HTMLDialogElement\" target=\"_blank\" rel=\"noopener\">HTMLDialogElement &#8211; MDN Web Docs\uff08\u65e5\u672c\u8a9e\uff09<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTML\/Reference\/Elements\/dialog#closedby\" target=\"_blank\" rel=\"noopener\">&lt;dialog&gt;: The Dialog element\uff08closedby\uff09 &#8211; MDN Web Docs<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/API\/HTMLDialogElement\/closedBy\" target=\"_blank\" rel=\"noopener\">HTMLDialogElement: closedBy property &#8211; MDN Web Docs<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/web-platform-dx.github.io\/web-features-explorer\/features\/dialog-closedby\/\" target=\"_blank\" rel=\"noopener\">&lt;dialog closedby&gt; &#8211; Web platform features explorer<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/html.spec.whatwg.org\/multipage\/interactive-elements.html#attr-dialog-closedby\" target=\"_blank\" rel=\"noopener\">HTML Standard &#8211; The dialog element\uff08closedby\u5c5e\u6027\uff09<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u524a\u9664\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u305f\u3068\u304d\u306b\u300c\u672c\u5f53\u306b\u524a\u9664\u3057\u307e\u3059\u304b\uff1f\u300d\u3068\u51fa\u3059\u3001\u3042\u306eJavaScript\u306econfirm\u30c0\u30a4\u30a2\u30ed\u30b0\u3002\u624b\u8efd\u3067\u4fbf\u5229\u306a\u3093\u3067\u3059\u304c\u3001\u898b\u305f\u76ee\u304c\u30d6\u30e9\u30a6\u30b6\u4efb\u305b\u306a\u306e\u3067\u30b5\u30a4\u30c8\u306e\u30c7\u30b6\u30a4\u30f3\u304b\u3089\u3081\u3061\u3083\u304f\u3061\u3083\u6d6e\u304f\u3093\u3067\u3059\u3088\u306d\u3002\u30c7\u30b6\u30a4\u30ca\u30fc\u3055\u3093\u304b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7906,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[8],"class_list":["post-7905","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript","tag-javascript"],"_links":{"self":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/7905","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/comments?post=7905"}],"version-history":[{"count":3,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/7905\/revisions"}],"predecessor-version":[{"id":7910,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/7905\/revisions\/7910"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/media\/7906"}],"wp:attachment":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/media?parent=7905"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/categories?post=7905"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/tags?post=7905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}