{"id":7890,"date":"2026-09-13T00:39:27","date_gmt":"2026-09-12T15:39:27","guid":{"rendered":"https:\/\/engineering.webstudio168.jp\/blog\/?p=7890"},"modified":"2026-09-13T00:39:28","modified_gmt":"2026-09-12T15:39:28","slug":"anti-jquery","status":"publish","type":"post","link":"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/","title":{"rendered":"\u8131jQuery\u306f\u6016\u304f\u306a\u3044\u3002jQuery\u5352\u696d\u306e\u305f\u3081\u306e\u30d0\u30cb\u30e9JS\u79fb\u884c\u5b8c\u5168\u5bfe\u5fdc\u8868"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87_1 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 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#%E3%81%AA%E3%81%9C%E4%BB%8A%E3%81%95%E3%82%89%E8%84%B1jQuery%E3%81%AA%E3%81%AE%E3%81%8B\" >\u306a\u305c\u4eca\u3055\u3089\u8131jQuery\u306a\u306e\u304b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#jQuery_%E3%82%84%E3%82%81%E3%82%8B%E5%89%8D%E3%81%AB%E6%8A%BC%E3%81%95%E3%81%88%E3%81%A6%E3%81%8A%E3%81%8D%E3%81%9F%E3%81%84%E8%80%83%E3%81%88%E6%96%B9\" >jQuery \u3084\u3081\u308b\u524d\u306b\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u8003\u3048\u65b9<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#%E3%82%BB%E3%83%AC%E3%82%AF%E3%82%BF%E5%8F%96%E5%BE%97%E3%81%AFquerySelector%E3%81%A7%E5%AE%8C%E7%B5%90%E3%81%99%E3%82%8B\" >\u30bb\u30ec\u30af\u30bf\u53d6\u5f97\u306fquerySelector\u3067\u5b8c\u7d50\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-4\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#jQuery%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E2%86%92%E3%83%90%E3%83%8B%E3%83%A9JS%E5%AF%BE%E5%BF%9C%E8%A1%A8%E3%80%90%E5%AE%9F%E5%8B%99%E9%A0%BB%E5%87%BA%E7%B7%A8%E3%80%91\" >jQuery\u30e1\u30bd\u30c3\u30c9\u2192\u30d0\u30cb\u30e9JS\u5bfe\u5fdc\u8868\u3010\u5b9f\u52d9\u983b\u51fa\u7de8\u3011<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#%E3%82%AF%E3%83%A9%E3%82%B9%E3%81%AE%E8%BF%BD%E5%8A%A0%E3%83%BB%E5%89%8A%E9%99%A4%E3%83%BB%E3%83%88%E3%82%B0%E3%83%AB\" >\u30af\u30e9\u30b9\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u30fb\u30c8\u30b0\u30eb<\/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\/anti-jquery\/#%E3%82%A4%E3%83%99%E3%83%B3%E3%83%88%E3%81%AE%E7%99%BB%E9%8C%B2\" >\u30a4\u30d9\u30f3\u30c8\u306e\u767b\u9332<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#CSS%E6%93%8D%E4%BD%9C%E3%83%BB%E8%A6%81%E7%B4%A0%E3%81%AE%E8%A1%A8%E7%A4%BA%E9%9D%9E%E8%A1%A8%E7%A4%BA\" >CSS\u64cd\u4f5c\u30fb\u8981\u7d20\u306e\u8868\u793a\u975e\u8868\u793a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#Ajax%E9%80%9A%E4%BF%A1%E3%81%AFfetch%E3%81%AB%E4%B8%80%E6%9C%AC%E5%8C%96\" >Ajax\u901a\u4fe1\u306ffetch\u306b\u4e00\u672c\u5316<\/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\/anti-jquery\/#DOM%E8%A6%81%E7%B4%A0%E3%81%AE%E7%94%9F%E6%88%90%E3%83%BB%E8%BF%BD%E5%8A%A0\" >DOM\u8981\u7d20\u306e\u751f\u6210\u30fb\u8ffd\u52a0<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#%E3%82%A2%E3%83%8B%E3%83%A1%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3%E5%91%A8%E3%82%8A%E3%81%AF%E4%BB%A3%E6%9B%BF%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%81%8BCSS%E3%81%AB%E5%AF%84%E3%81%9B%E3%82%8B\" >\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u5468\u308a\u306f\u4ee3\u66ff\u30e9\u30a4\u30d6\u30e9\u30ea\u304bCSS\u306b\u5bc4\u305b\u308b<\/a><\/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\/anti-jquery\/#%E7%A7%BB%E8%A1%8C%E3%82%92%E9%80%B2%E3%82%81%E3%82%8B%E3%81%A8%E3%81%8D%E3%81%AE%E7%8F%BE%E5%AE%9F%E7%9A%84%E3%81%AA%E9%80%B2%E3%82%81%E6%96%B9\" >\u79fb\u884c\u3092\u9032\u3081\u308b\u3068\u304d\u306e\u73fe\u5b9f\u7684\u306a\u9032\u3081\u65b9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/anti-jquery\/#%E3%81%BE%E3%81%A8%E3%82%81\" >\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">\u672a\u3060\u306b\u73fe\u5834\u3067\u300c$(document).ready\u300d\u3092\u898b\u304b\u3051\u308b\u3068\u3001\u306a\u3093\u3060\u304b\u30db\u30c3\u3068\u3057\u3066\u3057\u307e\u3046\u81ea\u5206\u304c\u3044\u307e\u3059\u3002\u3068\u306f\u3044\u3048\u3001\u3082\u3046jQuery\u306b\u983c\u3089\u306a\u304f\u3066\u3082DOM\u64cd\u4f5c\u306a\u3093\u3066\u4f59\u88d5\u3067\u66f8\u3051\u308b\u6642\u4ee3\u3067\u3059\u3002\u4eca\u56de\u306f\u300cjQuery \u3084\u3081\u308b\u300d\u300cJavaScript \u79fb\u884c\u300d\u3067\u691c\u7d22\u3057\u3066\u304d\u305f\u65b9\u5411\u3051\u306b\u3001\u5b9f\u52d9\u3067\u3088\u304f\u4f7f\u3046jQuery\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u30d0\u30cb\u30e9JS\u3067\u3069\u3046\u66f8\u304d\u63db\u3048\u308b\u304b\u3001\u4e00\u3064\u305a\u3064\u5bfe\u5fdc\u8868\u5f62\u5f0f\u3067\u307e\u3068\u3081\u3066\u307f\u307e\u3059\u3002\u8131jQuery\u306e\u4e00\u6b69\u76ee\u3068\u3057\u3066\u4fdd\u5b58\u7248\u306b\u3069\u3046\u305e\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%AA%E3%81%9C%E4%BB%8A%E3%81%95%E3%82%89%E8%84%B1jQuery%E3%81%AA%E3%81%AE%E3%81%8B\"><\/span>\u306a\u305c\u4eca\u3055\u3089\u8131jQuery\u306a\u306e\u304b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b63\u76f4\u306b\u8a00\u3046\u3068\u3001jQuery\u304c\u300c\u60aa\u300d\u3060\u3068\u306f\u5168\u304f\u601d\u3063\u3066\u3044\u307e\u305b\u3093\u3002IE\u5bfe\u5fdc\u304c\u5fc5\u9808\u3060\u3063\u305f\u6642\u4ee3\u3001\u3042\u308c\u307b\u3069\u30d6\u30e9\u30a6\u30b6\u9593\u306e\u5dee\u7570\u3092\u5438\u53ce\u3057\u3066\u304f\u308c\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u305f\u3060\u3001\u30e2\u30c0\u30f3\u30d6\u30e9\u30a6\u30b6\u304cDOM\u64cd\u4f5c\u7cfb\u306eAPI\u3092\u304b\u306a\u308a\u5145\u5b9f\u3055\u305b\u305f\u4eca\u3001jQuery\u306b\u983c\u308b\u7406\u7531\u304c\u8584\u304f\u306a\u3063\u3066\u3044\u308b\u306e\u3082\u4e8b\u5b9f\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u756a\u306e\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u306f\u3084\u3063\u3071\u308a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3067\u3059\u3002jQuery\u672c\u4f53\u306e\u8aad\u307f\u8fbc\u307f\u3060\u3051\u3067\u6570\u5341KB\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u767a\u751f\u3057\u307e\u3059\u3057\u3001\u3061\u3087\u3063\u3068\u3057\u305f\u30bb\u30ec\u30af\u30bf\u64cd\u4f5c\u306e\u305f\u3081\u3060\u3051\u306b\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4e38\u3054\u3068\u8aad\u307f\u8fbc\u3080\u306e\u306f\u6b63\u76f4\u3082\u3063\u305f\u3044\u306a\u3044\u3002\u30da\u30fc\u30b8\u8868\u793a\u901f\u5ea6\u3084Core Web Vitals\u3092\u6c17\u306b\u3059\u308b\u6848\u4ef6\u304c\u5897\u3048\u3066\u3044\u308b\u4eca\u3001\u5916\u305b\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u5916\u3057\u3066\u304a\u304d\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u3046\u4e00\u3064\u306f\u4fdd\u5b88\u6027\u306e\u554f\u984c\u3002jQuery\u306e\u30b3\u30fc\u30c9\u306f\u66f8\u304d\u3084\u3059\u3044\u53cd\u9762\u3001\u5f8c\u304b\u3089\u8aad\u3093\u3060\u3068\u304d\u306b\u300c\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3069\u3053\u3067\u767a\u706b\u3057\u3066\u308b\u3093\u3060\u3063\u3051\u300d\u3068\u306a\u308a\u304c\u3061\u3067\u3059\u3002\u30d0\u30cb\u30e9JS\u306b\u5bc4\u305b\u3066\u304a\u304f\u3068\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3078\u306e\u79fb\u884c\u3084TypeScript\u5316\u3082\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308a\u307e\u3059\u3002\u500b\u4eba\u7684\u306b\u306f\u3001\u6848\u4ef6\u306e\u30ea\u30d7\u30ec\u30a4\u30b9\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u5c11\u3057\u305a\u3064\u8131jQuery\u3092\u9032\u3081\u308b\u306e\u304c\u73fe\u5b9f\u7684\u3060\u3068\u611f\u3058\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"jQuery_%E3%82%84%E3%82%81%E3%82%8B%E5%89%8D%E3%81%AB%E6%8A%BC%E3%81%95%E3%81%88%E3%81%A6%E3%81%8A%E3%81%8D%E3%81%9F%E3%81%84%E8%80%83%E3%81%88%E6%96%B9\"><\/span>jQuery \u3084\u3081\u308b\u524d\u306b\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u8003\u3048\u65b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u304d\u306a\u308a\u5168\u90e8\u66f8\u304d\u63db\u3048\u3088\u3046\u3068\u3059\u308b\u3068\u5fc5\u305a\u632b\u6298\u3057\u307e\u3059\u3002\u307e\u305a\u306f\u300cjQuery\u304c\u62c5\u3063\u3066\u3044\u305f\u5f79\u5272\u300d\u3092\u6574\u7406\u3057\u3066\u304b\u3089\u7740\u624b\u3059\u308b\u306e\u304c\u30b3\u30c4\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%BB%E3%83%AC%E3%82%AF%E3%82%BF%E5%8F%96%E5%BE%97%E3%81%AFquerySelector%E3%81%A7%E5%AE%8C%E7%B5%90%E3%81%99%E3%82%8B\"><\/span>\u30bb\u30ec\u30af\u30bf\u53d6\u5f97\u306fquerySelector\u3067\u5b8c\u7d50\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">jQuery\u306e<code>$()<\/code>\u304c\u62c5\u3063\u3066\u3044\u305f\u8981\u7d20\u53d6\u5f97\u306f\u3001<code>document.querySelector<\/code>\u3068<code>document.querySelectorAll<\/code>\u3067\u307b\u307c\u4ee3\u66ff\u3067\u304d\u307e\u3059\u3002CSS\u30bb\u30ec\u30af\u30bf\u306e\u66f8\u304d\u65b9\u306f\u305d\u306e\u307e\u307e\u4f7f\u3048\u308b\u306e\u3067\u3001\u3053\u3053\u306f\u79fb\u884c\u306e\u30cf\u30fc\u30c9\u30eb\u304c\u4e00\u756a\u4f4e\u3044\u90e8\u5206\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ jQuery\n$('.item');\n\n\/\/ \u30d0\u30cb\u30e9JS\uff08\u5358\u4e00\u8981\u7d20\uff09\ndocument.querySelector('.item');\n\n\/\/ \u30d0\u30cb\u30e9JS\uff08\u8907\u6570\u8981\u7d20\u30fbNodeList\uff09\ndocument.querySelectorAll('.item');\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\u70b9\u306f\u623b\u308a\u5024\u306e\u9055\u3044\u3067\u3059\u3002jQuery\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u914d\u5217\u98a8\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u6700\u521d\u304b\u3089\u4f7f\u3048\u307e\u3059\u304c\u3001<code>querySelectorAll<\/code>\u304c\u8fd4\u3059NodeList\u306f<code>forEach<\/code>\u3053\u305d\u4f7f\u3048\u308b\u3082\u306e\u306e\u3001<code>map<\/code>\u3084<code>filter<\/code>\u306f\u76f4\u63a5\u547c\u3079\u307e\u305b\u3093\u3002\u914d\u5217\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u305f\u3044\u5834\u5408\u306f<code>Array.from()<\/code>\u3067\u5909\u63db\u3057\u3066\u3042\u3052\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const items = Array.from(document.querySelectorAll('.item'));\nitems.filter(el =&gt; el.dataset.active === 'true');\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"jQuery%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E2%86%92%E3%83%90%E3%83%8B%E3%83%A9JS%E5%AF%BE%E5%BF%9C%E8%A1%A8%E3%80%90%E5%AE%9F%E5%8B%99%E9%A0%BB%E5%87%BA%E7%B7%A8%E3%80%91\"><\/span>jQuery\u30e1\u30bd\u30c3\u30c9\u2192\u30d0\u30cb\u30e9JS\u5bfe\u5fdc\u8868\u3010\u5b9f\u52d9\u983b\u51fa\u7de8\u3011<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u304b\u3089\u304c\u672c\u984c\u3067\u3059\u3002\u5b9f\u969b\u306e\u6848\u4ef6\u3067\u3088\u304f\u898b\u304b\u3051\u308bjQuery\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u3001\u4f7f\u7528\u983b\u5ea6\u9806\u306b\u30d0\u30cb\u30e9JS\u3067\u306e\u66f8\u304d\u65b9\u306b\u7f6e\u304d\u63db\u3048\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%AF%E3%83%A9%E3%82%B9%E3%81%AE%E8%BF%BD%E5%8A%A0%E3%83%BB%E5%89%8A%E9%99%A4%E3%83%BB%E3%83%88%E3%82%B0%E3%83%AB\"><\/span>\u30af\u30e9\u30b9\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u30fb\u30c8\u30b0\u30eb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>addClass<\/code>\u3084<code>removeClass<\/code>\u306f<code>classList<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u305d\u306e\u307e\u307e\u5bfe\u5fdc\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002\u3080\u3057\u308d\u30d0\u30cb\u30e9JS\u306e\u307b\u3046\u304c\u30e1\u30bd\u30c3\u30c9\u540d\u304c\u76f4\u611f\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ jQuery\n$('.box').addClass('active');\n$('.box').removeClass('active');\n$('.box').toggleClass('active');\n$('.box').hasClass('active');\n\n\/\/ \u30d0\u30cb\u30e9JS\ndocument.querySelector('.box').classList.add('active');\ndocument.querySelector('.box').classList.remove('active');\ndocument.querySelector('.box').classList.toggle('active');\ndocument.querySelector('.box').classList.contains('active');\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u6570\u8981\u7d20\u306b\u4e00\u62ec\u3067\u9069\u7528\u3057\u305f\u3044\u5834\u5408\u306fforEach\u304c\u5fc5\u8981\u306b\u306a\u308b\u70b9\u3060\u3051\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002jQuery\u306f\u6697\u9ed9\u7684\u306b\u5168\u8981\u7d20\u3078\u51e6\u7406\u3057\u3066\u304f\u308c\u307e\u3059\u304c\u3001\u30d0\u30cb\u30e9JS\u3067\u306fNodeList\u3092\u30eb\u30fc\u30d7\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>document.querySelectorAll('.box').forEach(el =&gt; {\n  el.classList.add('active');\n});\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%A4%E3%83%99%E3%83%B3%E3%83%88%E3%81%AE%E7%99%BB%E9%8C%B2\"><\/span>\u30a4\u30d9\u30f3\u30c8\u306e\u767b\u9332<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>on<\/code>\u30e1\u30bd\u30c3\u30c9\u306e\u7f6e\u304d\u63db\u3048\u306f<code>addEventListener<\/code>\u4e00\u629e\u3067\u3059\u3002\u3053\u3053\u306f\u307b\u307c1\u5bfe1\u3067\u5bfe\u5fdc\u3059\u308b\u306e\u3067\u3001\u6a5f\u68b0\u7684\u306b\u7f6e\u63db\u3057\u3066\u3044\u3051\u308b\u90e8\u5206\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ jQuery\n$('.btn').on('click', function () {\n  console.log('clicked');\n});\n\n\/\/ \u30d0\u30cb\u30e9JS\ndocument.querySelector('.btn').addEventListener('click', () =&gt; {\n  console.log('clicked');\n});\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">jQuery\u306e<code>on<\/code>\u304c\u4fbf\u5229\u3060\u3063\u305f\u306e\u306f\u30a4\u30d9\u30f3\u30c8\u59d4\u4efb\uff08\u30c7\u30ea\u30b2\u30fc\u30b7\u30e7\u30f3\uff09\u3092\u7c21\u5358\u306b\u66f8\u3051\u305f\u70b9\u3067\u3059\u3002\u52d5\u7684\u306b\u8ffd\u52a0\u3055\u308c\u308b\u8981\u7d20\u306b\u3082\u30a4\u30d9\u30f3\u30c8\u3092\u52b9\u304b\u305b\u305f\u3044\u5834\u5408\u3001\u30d0\u30cb\u30e9JS\u3067\u306f\u89aa\u8981\u7d20\u306b\u30ea\u30b9\u30ca\u30fc\u3092\u4ed8\u3051\u3066<code>event.target<\/code>\u3067\u5224\u5b9a\u3059\u308b\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ jQuery\uff08\u30c7\u30ea\u30b2\u30fc\u30b7\u30e7\u30f3\uff09\n$(document).on('click', '.dynamic-btn', function () {\n  console.log('clicked');\n});\n\n\/\/ \u30d0\u30cb\u30e9JS\uff08\u30c7\u30ea\u30b2\u30fc\u30b7\u30e7\u30f3\uff09\ndocument.addEventListener('click', (event) =&gt; {\n  if (event.target.matches('.dynamic-btn')) {\n    console.log('clicked');\n  }\n});\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><code>matches<\/code>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u3068\u3001\u5f8c\u304b\u3089\u8ffd\u52a0\u3055\u308c\u305fDOM\u8981\u7d20\u3067\u3082\u30bb\u30ec\u30af\u30bf\u5224\u5b9a\u304c\u3067\u304d\u308b\u306e\u3067\u304b\u306a\u308a\u91cd\u5b9d\u3057\u307e\u3059\u3002\u5730\u5473\u306b\u77e5\u3089\u306a\u3044\u4eba\u304c\u591a\u3044\u6c17\u304c\u3059\u308b\u306e\u3067\u899a\u3048\u3066\u304a\u3044\u3066\u640d\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CSS%E6%93%8D%E4%BD%9C%E3%83%BB%E8%A6%81%E7%B4%A0%E3%81%AE%E8%A1%A8%E7%A4%BA%E9%9D%9E%E8%A1%A8%E7%A4%BA\"><\/span>CSS\u64cd\u4f5c\u30fb\u8981\u7d20\u306e\u8868\u793a\u975e\u8868\u793a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>css()<\/code>\u306f<code>style<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u5bfe\u5fdc\u3057\u307e\u3059\u3002\u5358\u767a\u306a\u3089\u305d\u306e\u307e\u307e\u4ee3\u5165\u3001\u8907\u6570\u307e\u3068\u3081\u3066\u8a2d\u5b9a\u3057\u305f\u3044\u5834\u5408\u306f<code>Object.assign<\/code>\u304c\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ jQuery\n$('.box').css('color', 'red');\n$('.box').css({ color: 'red', fontSize: '16px' });\n\n\/\/ \u30d0\u30cb\u30e9JS\ndocument.querySelector('.box').style.color = 'red';\nObject.assign(document.querySelector('.box').style, {\n  color: 'red',\n  fontSize: '16px',\n});\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><code>show()<\/code>\u3084<code>hide()<\/code>\u306fCSS\u306e<code>display<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u64cd\u4f5c\u3057\u3066\u3044\u308b\u3060\u3051\u306a\u306e\u3067\u3001\u7d20\u76f4\u306b\u66f8\u304d\u63db\u3048\u308c\u3070OK\u3067\u3059\u3002\u305f\u3060\u3001jQuery\u306f\u5143\u306edisplay\u5024\uff08<code>block<\/code>\u304b<code>inline-block<\/code>\u304b\u306a\u3069\uff09\u3092\u5185\u90e8\u7684\u306b\u899a\u3048\u3066\u3044\u3066<code>show()<\/code>\u5b9f\u884c\u6642\u306b\u5fa9\u5143\u3057\u3066\u304f\u308c\u308b\u4ed5\u69d8\u306a\u306e\u3067\u3001\u30d0\u30cb\u30e9JS\u3067\u518d\u73fe\u3059\u308b\u5834\u5408\u306fCSS\u30af\u30e9\u30b9\u306e\u4ed8\u3051\u5916\u3057\u306b\u5bc4\u305b\u305f\u307b\u3046\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u30d0\u30cb\u30e9JS\uff08\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u65b9\u5f0f\u304c\u304a\u3059\u3059\u3081\uff09\ndocument.querySelector('.box').classList.add('is-hidden');\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>.is-hidden {\n  display: none;\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ajax%E9%80%9A%E4%BF%A1%E3%81%AFfetch%E3%81%AB%E4%B8%80%E6%9C%AC%E5%8C%96\"><\/span>Ajax\u901a\u4fe1\u306ffetch\u306b\u4e00\u672c\u5316<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>$.ajax()<\/code>\u3084<code>$.get()<\/code>\u306f\u3001\u30e2\u30c0\u30f3\u30d6\u30e9\u30a6\u30b6\u6a19\u6e96\u306e<code>fetch<\/code> API\u3067\u5b8c\u5168\u306b\u7f6e\u304d\u63db\u3048\u53ef\u80fd\u3067\u3059\u3002Promise\u30d9\u30fc\u30b9\u306a\u306e\u3067\u3001<code>async\/await<\/code>\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3068jQuery\u6642\u4ee3\u3088\u308a\u3080\u3057\u308d\u8aad\u307f\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ jQuery\n$.ajax({\n  url: '\/api\/data',\n  method: 'GET',\n  success: function (data) {\n    console.log(data);\n  },\n  error: function (err) {\n    console.error(err);\n  },\n});\n\n\/\/ \u30d0\u30cb\u30e9JS\nasync function fetchData() {\n  try {\n    const response = await fetch('\/api\/data');\n    const data = await response.json();\n    console.log(data);\n  } catch (err) {\n    console.error(err);\n  }\n}\nfetchData();\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">POST\u9001\u4fe1\u3067JSON\u3092\u9001\u308a\u305f\u3044\u5834\u5408\u306fheaders\u3068body\u306e\u6307\u5b9a\u3092\u5fd8\u308c\u305a\u306b\u3002\u3053\u3053\u306f\u79fb\u884c\u6642\u306b\u30cf\u30de\u308a\u304c\u3061\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3001\u6848\u4ef6\u3067\u79fb\u884c\u3059\u308b\u3068\u304d\u306f\u901a\u4fe1\u5468\u308a\u3060\u3051\u5148\u306b\u30c6\u30b9\u30c8\u3092\u66f8\u3044\u3066\u304a\u304f\u3068\u5b89\u5fc3\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>fetch('\/api\/data', {\n  method: 'POST',\n  headers: { 'Content-Type': 'application\/json' },\n  body: JSON.stringify({ name: 'test' }),\n});\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DOM%E8%A6%81%E7%B4%A0%E3%81%AE%E7%94%9F%E6%88%90%E3%83%BB%E8%BF%BD%E5%8A%A0\"><\/span>DOM\u8981\u7d20\u306e\u751f\u6210\u30fb\u8ffd\u52a0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>append<\/code>\u3084<code>html()<\/code>\u3082\u3088\u304f\u4f7f\u308f\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u30d0\u30cb\u30e9JS\u3067\u306f<code>insertAdjacentHTML<\/code>\u3084<code>createElement<\/code>\u3092\u4f7f\u3044\u5206\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ jQuery\n$('.list').append('&lt;li&gt;item&lt;\/li&gt;');\n$('.box').html('&lt;p&gt;content&lt;\/p&gt;');\n\n\/\/ \u30d0\u30cb\u30e9JS\ndocument.querySelector('.list').insertAdjacentHTML('beforeend', '&lt;li&gt;item&lt;\/li&gt;');\ndocument.querySelector('.box').innerHTML = '&lt;p&gt;content&lt;\/p&gt;';\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u3092\u542b\u3080\u6587\u5b57\u5217\u3092\u305d\u306e\u307e\u307e<code>innerHTML<\/code>\u306b\u7a81\u3063\u8fbc\u3080\u3068XSS\u306e\u30ea\u30b9\u30af\u304c\u3042\u308b\u306e\u306f\u3001jQuery\u6642\u4ee3\u304b\u3089\u305a\u3063\u3068\u5909\u308f\u3089\u306a\u3044\u6ce8\u610f\u70b9\u3067\u3059\u3002\u52d5\u7684\u306a\u5024\u3092\u6271\u3046\u5834\u5408\u306f<code>textContent<\/code>\u3067\u633f\u5165\u3059\u308b\u304b\u3001<code>createElement<\/code>\u3067\u8981\u7d20\u3092\u7d44\u307f\u7acb\u3066\u3066<code>appendChild<\/code>\u3059\u308b\u65b9\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const li = document.createElement('li');\nli.textContent = userInput; \/\/ \u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u3066\u5b89\u5168\ndocument.querySelector('.list').appendChild(li);\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%A2%E3%83%8B%E3%83%A1%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3%E5%91%A8%E3%82%8A%E3%81%AF%E4%BB%A3%E6%9B%BF%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%81%8BCSS%E3%81%AB%E5%AF%84%E3%81%9B%E3%82%8B\"><\/span>\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u5468\u308a\u306f\u4ee3\u66ff\u30e9\u30a4\u30d6\u30e9\u30ea\u304bCSS\u306b\u5bc4\u305b\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>animate()<\/code>\u3084<code>fadeIn()<\/code>\/<code>fadeOut()<\/code>\u306e\u3088\u3046\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u7cfb\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6b63\u76f4\u30d0\u30cb\u30e9JS\u3060\u3051\u3067\u5b8c\u5168\u518d\u73fe\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u5730\u5473\u306b\u624b\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u500b\u4eba\u7684\u306a\u304a\u3059\u3059\u3081\u306f\u4ee5\u4e0b\u306e2\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u3064\u306fCSS\u306e<code>transition<\/code>\u3084\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u306e\u5207\u308a\u66ff\u3048\u3067\u6e08\u307e\u305b\u308b\u65b9\u6cd5\u3002\u3082\u3046\u4e00\u3064\u306fWeb Animations API\uff08<code>element.animate()<\/code>\uff09\u3092\u4f7f\u3046\u65b9\u6cd5\u3067\u3059\u3002\u5f8c\u8005\u306f\u30ad\u30fc\u30d5\u30ec\u30fc\u30e0\u3092JavaScript\u5074\u3067\u7d30\u304b\u304f\u5236\u5fa1\u3067\u304d\u308b\u306e\u3067\u3001jQuery\u306e<code>animate()<\/code>\u306b\u8fd1\u3044\u67d4\u8edf\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>document.querySelector('.box').animate(\n  &#91;{ opacity: 0 }, { opacity: 1 }],\n  { duration: 300, fill: 'forwards' }\n);\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u96d1\u306a\u6f14\u51fa\u304c\u5fc5\u8981\u306a\u6848\u4ef6\u3067\u306f\u3001\u7121\u7406\u306b\u30d0\u30cb\u30e9JS\u3060\u3051\u3067\u9811\u5f35\u3089\u305aGSAP\u306e\u3088\u3046\u306a\u8efd\u91cf\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u691c\u8a0e\u3059\u308b\u306e\u3082\u5341\u5206\u30a2\u30ea\u3060\u3068\u601d\u3044\u307e\u3059\u3002jQuery\u3092\u5265\u304c\u3059\u76ee\u7684\u306f\u3042\u304f\u307e\u3067\u300c\u8efd\u91cf\u5316\u3068\u4fdd\u5b88\u6027\u306e\u5411\u4e0a\u300d\u306a\u306e\u3067\u3001\u76ee\u7684\u3068\u624b\u6bb5\u3092\u53d6\u308a\u9055\u3048\u306a\u3044\u3088\u3046\u306b\u3057\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%A7%BB%E8%A1%8C%E3%82%92%E9%80%B2%E3%82%81%E3%82%8B%E3%81%A8%E3%81%8D%E3%81%AE%E7%8F%BE%E5%AE%9F%E7%9A%84%E3%81%AA%E9%80%B2%E3%82%81%E6%96%B9\"><\/span>\u79fb\u884c\u3092\u9032\u3081\u308b\u3068\u304d\u306e\u73fe\u5b9f\u7684\u306a\u9032\u3081\u65b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bfe\u5fdc\u8868\u3092\u773a\u3081\u3066\u3044\u308b\u3060\u3051\u3060\u3068\u300c\u3088\u3057\u3001\u5168\u90e8\u66f8\u304d\u63db\u3048\u308b\u305e\u300d\u3068\u3044\u3046\u6c17\u6301\u3061\u306b\u306a\u308a\u304c\u3061\u3067\u3059\u304c\u3001\u5b9f\u6848\u4ef6\u3067\u3044\u304d\u306a\u308a\u5168\u7f6e\u63db\u3059\u308b\u306e\u306f\u30ea\u30b9\u30af\u304c\u9ad8\u3044\u9032\u3081\u65b9\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u306f\u30da\u30fc\u30b8\u5358\u4f4d\u30fb\u6a5f\u80fd\u5358\u4f4d\u3067\u5f71\u97ff\u7bc4\u56f2\u3092\u533a\u5207\u3063\u3066\u3001\u30c6\u30b9\u30c8\u3057\u3084\u3059\u3044\u7b87\u6240\u304b\u3089\u7740\u624b\u3059\u308b\u306e\u304c\u7121\u96e3\u3067\u3059\u3002\u7279\u306bAjax\u901a\u4fe1\u5468\u308a\u306f\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u6319\u52d5\u304c\u5909\u308f\u308a\u3084\u3059\u3044\u306e\u3067\u3001\u79fb\u884c\u5f8c\u306f\u5fc5\u305a\u7570\u5e38\u7cfb\uff08\u901a\u4fe1\u5931\u6557\u6642\u306a\u3069\uff09\u306e\u52d5\u4f5c\u3082\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u79c1\u81ea\u8eab\u3001\u79fb\u884c\u4f5c\u696d\u4e2d\u306b\u6210\u529f\u6642\u306e\u51e6\u7406\u3060\u3051\u79fb\u3057\u3066\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3092\u79fb\u3057\u5fd8\u308c\u3001\u672c\u756a\u3067\u30a8\u30e9\u30fc\u304c\u63e1\u308a\u3064\u3076\u3055\u308c\u3066\u3044\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5730\u5473\u306b\u898b\u3064\u3051\u306b\u304f\u3044\u30d0\u30b0\u306a\u306e\u3067\u3001\u4ed6\u4eba\u4e8b\u3060\u3068\u601d\u308f\u305a\u6c17\u3092\u3064\u3051\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u3046\u4e00\u3064\u306e\u30b3\u30c4\u306f\u3001\u79fb\u884c\u5b8c\u4e86\u307e\u3067jQuery\u3068\u30d0\u30cb\u30e9JS\u3092\u5171\u5b58\u3055\u305b\u3066\u3082\u69cb\u308f\u306a\u3044\u3068\u3044\u3046\u5272\u308a\u5207\u308a\u3067\u3059\u3002\u300cjQuery\u304c1\u884c\u3067\u3082\u6b8b\u3063\u3066\u3044\u305f\u3089\u5931\u6557\u300d\u3067\u306f\u306a\u304f\u3001\u6bb5\u968e\u7684\u306b\u4f9d\u5b58\u5ea6\u3092\u4e0b\u3052\u3066\u3044\u304f\u65b9\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002\u7121\u7406\u306b\u4e00\u6c17\u306b\u3084\u308d\u3046\u3068\u3059\u308b\u3068\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3092\u5727\u8feb\u3057\u307e\u3059\u3057\u3001\u30c6\u30b9\u30c8\u306e\u898b\u843d\u3068\u3057\u3082\u5897\u3048\u307e\u3059\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\">\u4eca\u56de\u306fjQuery\u3067\u3088\u304f\u4f7f\u3046\u30e1\u30bd\u30c3\u30c9\u3092\u8ef8\u306b\u3001\u30d0\u30cb\u30e9JS\u3067\u306e\u66f8\u304d\u63db\u3048\u65b9\u3092\u5bfe\u5fdc\u8868\u5f62\u5f0f\u3067\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u305f\u3002\u30bb\u30ec\u30af\u30bf\u53d6\u5f97\u3084\u30af\u30e9\u30b9\u64cd\u4f5c\u3001\u30a4\u30d9\u30f3\u30c8\u767b\u9332\u3042\u305f\u308a\u306f\u6a5f\u68b0\u7684\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u308b\u90e8\u5206\u304c\u591a\u304f\u3001\u79fb\u884c\u306e\u521d\u624b\u3068\u3057\u3066\u306f\u53d6\u308a\u7d44\u307f\u3084\u3059\u3044\u9818\u57df\u3067\u3059\u3002\u4e00\u65b9\u3067Ajax\u901a\u4fe1\u3084\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u5358\u7d14\u306a1\u5bfe1\u5909\u63db\u3067\u306f\u6e08\u307e\u306a\u3044\u90e8\u5206\u3082\u3042\u308b\u306e\u3067\u3001\u6848\u4ef6\u306e\u8981\u4ef6\u3068\u76f8\u8ac7\u3057\u306a\u304c\u3089\u9032\u3081\u308b\u306e\u304c\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8131jQuery\u3092\u9032\u3081\u308b\u6700\u5927\u306e\u30e1\u30ea\u30c3\u30c8\u306f\u3084\u3063\u3071\u308a\u8efd\u91cf\u5316\u3068\u3001\u30b3\u30fc\u30c9\u306e\u898b\u901a\u3057\u306e\u826f\u3055\u3067\u3059\u3002\u4eca\u306f<code>querySelector<\/code>\u3084<code>fetch<\/code>\u3001<code>classList<\/code>\u306e\u3088\u3046\u306b\u30e2\u30c0\u30f3\u30d6\u30e9\u30a6\u30b6\u6a19\u6e96\u306eAPI\u3060\u3051\u3067\u304b\u306a\u308a\u306e\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002IE\u5bfe\u5fdc\u3068\u3044\u3046\u304f\u3073\u304d\u304b\u3089\u89e3\u653e\u3055\u308c\u305f\u4eca\u3060\u304b\u3089\u3053\u305d\u3001\u7121\u7406\u306b\u5168\u90e8\u3092\u4e00\u5ea6\u306b\u7f6e\u304d\u63db\u3048\u3088\u3046\u3068\u305b\u305a\u3001\u89e6\u308b\u6a5f\u4f1a\u304c\u3042\u3063\u305f\u7b87\u6240\u304b\u3089\u5c11\u3057\u305a\u3064\u30d0\u30cb\u30e9JS\u5316\u3057\u3066\u3044\u304f\u306e\u304c\u3001\u5b9f\u52d9\u7684\u306b\u3082\u7cbe\u795e\u7684\u306b\u3082\u4e00\u756a\u7d9a\u3051\u3084\u3059\u3044\u3084\u308a\u65b9\u3060\u3068\u611f\u3058\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u304c\u3001jQuery\u6848\u4ef6\u3092\u4eca\u3082\u62b1\u3048\u3066\u3044\u308b\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u65b9\u306e\u79fb\u884c\u306e\u8db3\u304c\u304b\u308a\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3010\u53c2\u8003\u6587\u732e\u3011<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MDN Web Docs &#8211; Document.querySelector(): https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/Document\/querySelector<\/li>\n\n\n\n<li>MDN Web Docs &#8211; EventTarget.addEventListener(): https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/EventTarget\/addEventListener<\/li>\n\n\n\n<li>MDN Web Docs &#8211; Element: classList property: https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/Element\/classList<\/li>\n\n\n\n<li>MDN Web Docs &#8211; Fetch API: https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/Fetch_API<\/li>\n\n\n\n<li>MDN Web Docs &#8211; Element.animate(): https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/Element\/animate<\/li>\n\n\n\n<li>You Might Not Need jQuery: https:\/\/youmightnotneedjquery.com\/<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u672a\u3060\u306b\u73fe\u5834\u3067\u300c$(document).ready\u300d\u3092\u898b\u304b\u3051\u308b\u3068\u3001\u306a\u3093\u3060\u304b\u30db\u30c3\u3068\u3057\u3066\u3057\u307e\u3046\u81ea\u5206\u304c\u3044\u307e\u3059\u3002\u3068\u306f\u3044\u3048\u3001\u3082\u3046jQuery\u306b\u983c\u3089\u306a\u304f\u3066\u3082DOM\u64cd\u4f5c\u306a\u3093\u3066\u4f59\u88d5\u3067\u66f8\u3051\u308b\u6642\u4ee3\u3067\u3059\u3002\u4eca\u56de\u306f\u300cjQuery \u3084\u3081\u308b\u300d\u300cJava [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7891,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[8,21,83,48],"class_list":["post-7890","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript","tag-javascript","tag-jquery","tag-83","tag-48"],"_links":{"self":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/7890","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=7890"}],"version-history":[{"count":1,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/7890\/revisions"}],"predecessor-version":[{"id":7892,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/7890\/revisions\/7892"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/media\/7891"}],"wp:attachment":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/media?parent=7890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/categories?post=7890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/tags?post=7890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}