{"id":2555,"date":"2022-07-15T02:41:34","date_gmt":"2022-07-14T17:41:34","guid":{"rendered":"https:\/\/engineering.webstudio168.jp\/?p=2555"},"modified":"2022-07-19T03:03:01","modified_gmt":"2022-07-18T18:03:01","slug":"array-some-every-find-includes-isarray","status":"publish","type":"post","link":"https:\/\/engineering.webstudio168.jp\/blog\/array-some-every-find-includes-isarray\/","title":{"rendered":"\u914d\u5217\u5185\u306e\u691c\u7d22\u30fb\u5224\u5b9a\u30fb\u5224\u5225\u3092\u3059\u308bJavaScript\u306e\u30e1\u30bd\u30c3\u30c9\uff08find, some, every, includes\uff09\u3092\u89e3\u8aac\uff5e\u521d\u5fc3\u8005\uff5e\u4e2d\u7d1a\u8005\u5411\u3051"},"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\/array-some-every-find-includes-isarray\/#isArray%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89_%E2%80%93_%E9%85%8D%E5%88%97%E3%82%AA%E3%83%96%E3%82%B8%E3%82%A7%E3%82%AF%E3%83%88%E3%81%8B%E5%88%A4%E5%88%A5\" >isArray()\u30e1\u30bd\u30c3\u30c9 &#8211; \u914d\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u5224\u5225<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/array-some-every-find-includes-isarray\/#%E3%82%B5%E3%83%B3%E3%83%97%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%89\" >\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/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\/array-some-every-find-includes-isarray\/#find%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89_%E2%80%93_%E6%9D%A1%E4%BB%B6%E3%82%92%E6%BA%80%E3%81%9F%E3%81%99%E5%80%A4%E3%82%92%E5%8F%96%E5%BE%97\" >find()\u30e1\u30bd\u30c3\u30c9 &#8211; \u6761\u4ef6\u3092\u6e80\u305f\u3059\u5024\u3092\u53d6\u5f97<\/a><\/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\/array-some-every-find-includes-isarray\/#some%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89_%E2%80%93_%E6%9D%A1%E4%BB%B6%E3%82%92%E6%BA%80%E3%81%9F%E3%81%99%E8%A6%81%E7%B4%A0%E3%81%8C%E3%81%B2%E3%81%A8%E3%81%A4%E3%81%A7%E3%82%82%E3%81%82%E3%82%8B%E3%81%8B%E5%88%A4%E5%AE%9A\" >some()\u30e1\u30bd\u30c3\u30c9 &#8211; \u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u304c\u3072\u3068\u3064\u3067\u3082\u3042\u308b\u304b\u5224\u5b9a<\/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\/array-some-every-find-includes-isarray\/#%E3%82%B5%E3%83%B3%E3%83%97%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%89-2\" >\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/array-some-every-find-includes-isarray\/#every%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89_%E2%80%93_%E5%85%A8%E8%A6%81%E7%B4%A0%E3%81%8C%E6%9D%A1%E4%BB%B6%E3%82%92%E6%BA%80%E3%81%9F%E3%81%99%E3%81%8B%E5%88%A4%E5%AE%9A\" >every()\u30e1\u30bd\u30c3\u30c9 &#8211; \u5168\u8981\u7d20\u304c\u6761\u4ef6\u3092\u6e80\u305f\u3059\u304b\u5224\u5b9a<\/a><\/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\/array-some-every-find-includes-isarray\/#includes%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89\" >includes()\u30e1\u30bd\u30c3\u30c9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/array-some-every-find-includes-isarray\/#%E5%8F%82%E8%80%83%E6%96%87%E7%8C%AE\" >\u53c2\u8003\u6587\u732e<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/array-some-every-find-includes-isarray\/#JavaScript_%E7%AC%AC7%E7%89%88_%E5%8D%98%E8%A1%8C%E6%9C%AC%EF%BC%88%E3%82%BD%E3%83%95%E3%83%88%E3%82%AB%E3%83%90%E3%83%BC%EF%BC%89_%E2%80%93_2021122\" >JavaScript \u7b2c7\u7248&nbsp;\u5358\u884c\u672c\uff08\u30bd\u30d5\u30c8\u30ab\u30d0\u30fc\uff09 \u2013 2021\/12\/2<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<figure class=\"wp-block-table aligncenter\"><table><tbody><tr><th><strong>Array\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9<\/strong><\/th><th class=\"has-text-align-left\" data-align=\"left\"><strong>\u5224\u5b9a\u30fb\u5224\u5225\u306e\u7528\u9014<\/strong><\/th><\/tr><tr><td><strong><a href=\"#isarray\">isArray()<\/a><\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\"><a href=\"#isarray\">\u914d\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308b\u304b\uff1f<\/a><\/td><\/tr><tr><td><a href=\"#find\"><strong>find()<\/strong><\/a><\/td><td class=\"has-text-align-left\" data-align=\"left\"><a href=\"#find\">\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5024\u3092\u53d6\u5f97\u3059\u308b<\/a><\/td><\/tr><tr><td><strong><a href=\"#some\">some()<\/a><\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\"><a href=\"#some\">\u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u304c\u3072\u3068\u3064\u3067\u3082\u3042\u308b\u304b\uff1f<\/a><\/td><\/tr><tr><td><strong><a href=\"#every\">every()<\/a><\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\"><a href=\"#every\">\u5168\u8981\u7d20\u304c\u6761\u4ef6\u3092\u6e80\u305f\u3059\u304b\uff1f<\/a><\/td><\/tr><tr><td><strong><a href=\"#includes\">includes()<\/a><\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\"><a href=\"#includes\">\u4efb\u610f\u306e\u5024\u304c\u914d\u5217\u306b\u3042\u308b\u304b\uff1f<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u306b\u6319\u3052\u305f\u3088\u3046\u306b\u914d\u5217\uff08Array\uff09\u306e\u5224\u5b9a\u3084\u5224\u5225\u306b\u306f\uff15\u7a2e\u985e\u306eJavaScript\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070[3, 4, 6, 777, 8192]\u306e\u3088\u3046\u306a\u914d\u5217\u304c\u3042\u3063\u305f\u5834\u5408\u30016\u4ee5\u4e0b\u306e\u6570\u5024\u306f\u8981\u7d20\u3068\u3057\u3066\u5b58\u5728\u3059\u308b\u304b\uff1f\u3068\u3044\u3046\u547d\u984c\u3092\u3001\u81ea\u52d5\u3067\u5224\u5225\u3059\u308b\u306b\u306f<code>some()<\/code>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306b\u306f\u3053\u3093\u306a\u306b\u77ed\u3044\u914d\u5217\u3067\u306f\u306a\u304f\u3001\u5de8\u5927\u3067\u76ee\u8996\u306b\u582a\u3048\u306a\u3044\u3088\u3046\u306a\u5927\u304d\u306a\u914d\u5217\u3067\u4f7f\u3046\u30b1\u30fc\u30b9\u304c\u591a\u3044\u3067\u3059\u3002\u305d\u308c\u306b\u52a0\u3048\u3001\u914d\u5217\u306f\u3044\u3064\u3082\u56fa\u5b9a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304b\u3089\uff08\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3060\u3068\u307b\u307c\u56fa\u5b9a\u306a\u306e\u3067\u8981\u7d20\u306e\u5224\u5b9a\u3092\u81ea\u52d5\u3067\u3059\u308b\u3068\u3044\u3046\u6069\u6075\u304c\u5206\u304b\u308a\u306b\u304f\u3044\u3067\u3059\uff09\u3069\u3093\u306a\u8981\u7d20\u304c\u5165\u308c\u3089\u308c\u308b\u306e\u304b\u306f\u30e9\u30f3\u30c0\u30e0\u3060\u3068\u8003\u3048\u308b\u3068\u3001\u3068\u3066\u3082\u3058\u3083\u306a\u3044\u3051\u3069<code>some()<\/code>\u3067\u5224\u5225\u3059\u308b\u307b\u304b\u306a\u3044\u72b6\u6cc1\u306b\u7f6e\u304b\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>some()<\/code>\u3060\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<code>every()<\/code>\u3001<code>include()<\/code>\u3082\u3001\u81a8\u5927\u306a\u914d\u5217\u3084\u3001\u6841\u6570\u306e\u591a\u3044\u6570\u5b57\u306e\u5b58\u5728\u306e\u6709\u7121\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u4e0d\u53ef\u6b20\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f\u3001\u5404\u30e1\u30bd\u30c3\u30c9\u306b\u3064\u3044\u3066\u4e00\u3064\u3065\u3064\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6481058887327275\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-6481058887327275\" data-ad-slot=\"6649918654\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"isarray\"><span class=\"ez-toc-section\" id=\"isArray%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89_%E2%80%93_%E9%85%8D%E5%88%97%E3%82%AA%E3%83%96%E3%82%B8%E3%82%A7%E3%82%AF%E3%83%88%E3%81%8B%E5%88%A4%E5%88%A5\"><\/span>isArray()\u30e1\u30bd\u30c3\u30c9 &#8211; \u914d\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u5224\u5225<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>Array.isArray()<\/code>\u306f\u5f15\u6570\u304cArray\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08\u914d\u5217\u578b\uff09\u3067\u3042\u308c\u3070true\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070false\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u3044\u65b9\u306f\u5358\u7d14\u3067\u3001\u5f15\u6570\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5165\u308c\u3066\u3042\u3052\u308b\u3060\u3051\u3067\u3059\u3002<code>Array.<strong>isArray<\/strong>(\u30aa\u30d6\u30b8\u30a7\u30af\u30c8)<\/code>\u3068\u3044\u3046\u578b\u306b\u306a\u308a\u307e\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cArray\u578b\u304b\u3069\u3046\u304b\u3001\u3063\u3066\u3053\u3068\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<h3 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\"><\/span>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"isArray.js\" data-lang=\"JavaScript\"><code>Array.isArray([]); \/\/ true\nArray.isArray([1]); \/\/ true\nArray.isArray(new Array()); \/\/ true\nArray.isArray(new Array(&#39;a&#39;, &#39;b&#39;, &#39;c&#39;, &#39;d&#39;)); \/\/ true\nArray.isArray(new Array(3)); \/\/ true\n\nArray.isArray(); \/\/ false \u203b\u5f15\u6570\u304c\u7a7a\u306a\u306e\u3067false\nArray.isArray({}); \/\/ false\u3000\u203b{}\u3067\u306f\u306a\u304f[]\u304c\u914d\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8868\u3059\u305f\u3081false\nArray.isArray(null); \/\/ false\nArray.isArray(undefined); \/\/ false\nArray.isArray(17); \/\/ false \u203b\u5f15\u6570\u304cint\u578b\u306a\u306e\u3067false\nArray.isArray(&#39;Array&#39;); \/\/ false \u203b\u5f15\u6570\u304c\u6587\u5b57\u5217\u306a\u306e\u3067false\nArray.isArray(true); \/\/ false \u203b\u5f15\u6570\u304cboolean\u578b\u306a\u306e\u3067false\nArray.isArray(false); \/\/ false \u203b\u540c\u4e0a<\/code><\/pre><\/div>\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6481058887327275\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-6481058887327275\" data-ad-slot=\"6649918654\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"find\"><span class=\"ez-toc-section\" id=\"find%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89_%E2%80%93_%E6%9D%A1%E4%BB%B6%E3%82%92%E6%BA%80%E3%81%9F%E3%81%99%E5%80%A4%E3%82%92%E5%8F%96%E5%BE%97\"><\/span>find()\u30e1\u30bd\u30c3\u30c9 &#8211; \u6761\u4ef6\u3092\u6e80\u305f\u3059\u5024\u3092\u53d6\u5f97<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">find()\u30e1\u30bd\u30c3\u30c9\u306f\u305d\u306e\u540d\u306e\u901a\u308a\u914d\u5217\u5185\u306b\u6761\u4ef6\u306b\u5408\u3046<strong>\u5024\u3092\u63a2\u3059\uff08\u8d70\u67fb\u3059\u308b\uff09\u95a2\u6570<\/strong>\u3067\u3059\u3002\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5024\u304c\u3042\u308c\u3070\u305d\u306e\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u3044\u65b9\u306f\u3001<code>\u914d\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8.<strong>find<\/strong>(\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570(\u8981\u7d20\u5024))<\/code>\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002\u30b5\u30f3\u30d7\u30eb\u3092\u898b\u305f\u65b9\u304c\u5206\u304b\u308a\u3084\u3059\u3044\u306e\u3067\u6b21\u306e\u4f8b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"find.js\" data-lang=\"JavaScript\"><code>let sampleArray = [3, 4, 6, 777, 8192];\n\nlet findSample = sampleArray.find(function(e){\n  return e &gt; 800;\n});\nconsole.log(findSample); \/\/ 8192<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u521d\u306b\u5b9a\u7fa9\u3057\u305f\u914d\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306esampleArray\u306e\u4e2d\u8eab\u304c800\u3088\u308a\u5927\u304d\u3044\u5834\u5408\u306b\u3001\u8981\u7d20\u306e\u6570\u5b57\u3092\u8868\u793a\u3059\u308b\u30b3\u30fc\u30c9\u3067\u3059\u3002\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u300c8192\u300d\u304c\uff08\u6700\u521d\u306b\uff09\u8a72\u5f53\u3059\u308b\u306e\u3067\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u4e0a\u306b8192\u3068\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:#ffd900\" class=\"has-inline-color\">\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u60aa\u3044\u3068\u3053\u308d\u306f\u3001\u6761\u4ef6\u306b\u30de\u30c3\u30c1\u3057\u305f<strong>\u6700\u521d\u306e\u5024<\/strong>\u3057\u304b\u8fd4\u3055\u306a\u3044<\/mark>\u3068\u3053\u308d\u3067\u3059\u3002return\u3092\u4f7f\u3063\u3066\u3057\u307e\u3046\u3068\u305d\u3053\u3067\u95a2\u6570\u306f\u7d42\u4e86\u3057\u307e\u3059\u304b\u3089\u306d\u3002<strong>find\u306f\u6697\u9ed9\u7684\u306b\u30eb\u30fc\u30d7\u3092\u884c\u3046\u305f\u3081\u3001forEach\u7b49\u306e\u30eb\u30fc\u30d7\u51e6\u7406\u306f\u4e0d\u8981\u306a\u306e\u3067\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u3001\u3053\u306e\u914d\u5217\u306e\u4e2d\u306b\u8907\u6570\u306e\u5024\u304c\u6761\u4ef6\u306b\u30d2\u30c3\u30c8\u3059\u308b\u3068\u304d\u306f\u3069\u3046\u3044\u3063\u305f\u66f8\u304d\u65b9\u3092\u3057\u305f\u3089\u3088\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u3061\u3087\u3063\u3068\u3084\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"find-2.js\" data-lang=\"JavaScript\"><code>let sampleArray = [3, 4, 6, 777, 8192, 65536];\n\nlet findSample = sampleArray.find(function(e){\n  if(e &gt; 800){\n    console.log(e); \/\/ 8192 \u306b\u7d9a\u3044\u3066 65536 \u304c\u51fa\u529b\u3055\u308c\u308b\n  }\n})<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f8c\u8005\u306e\u65b9\u304c\u3088\u304f\u4f7f\u3046\u30d1\u30bf\u30fc\u30f3\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3082\u3057\u304b\u3057\u305f\u3089\u53d6\u5f97\u3057\u305f\u5024\u3092\u518d\u5ea6\u914d\u5217\u306b\u5165\u308c\u3066\u3001\u6761\u4ef6\u306b\u5408\u3063\u305f\u5024\u3060\u3051\u306e\u914d\u5217\u3092\u8fd4\u3059\u3088\u3046\u306a\u51e6\u7406\u304c\u5b9f\u7528\u7684\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002\u4f8b\u3048\u3070\u3053\u3093\u306a\u611f\u3058\u3067\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"find-3.js\" data-lang=\"JavaScript\"><code>let sampleArray = [3, 4, 6, 777, 8192, 65536];\nlet newMatchedArray = []; \/\/ \u6761\u4ef6\u306b\u5408\u81f4\u3059\u308b\u5024\u3092\u5165\u308c\u308b\u305f\u3081\u306e\u914d\u5217\n\nlet findSample = sampleArray.find(function(e, index){\n  if(e &gt; 800){\n    newMatchedArray.push(e); \/\/ \u6761\u4ef6\u306b\u30de\u30c3\u30c1\u3057\u305f\u3089\u914d\u5217\u306b\u5165\u308c\u308b\n  }\n  if(index == sampleArray.length - 1){ \/\/ \u5143\u306e\u914d\u5217\u306e\u6700\u5f8c\u307e\u3067\u8d70\u67fb\u3057\u305f\u3089return\u3067\u65b0\u3057\u3044\u914d\u5217\u3092\u8fd4\u3059\n    return newMatchedArray;\n  }\n})\nconsole.log(newMatchedArray); \/\/ [8192, 65536] \u304c\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u51fa\u529b\u3055\u308c\u308b<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u88dc\u8db3\u3057\u3066\u304a\u304f\u3068\u3001<code>.find(function(\u8981\u7d20, <strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/strong>){......<\/code>\u306e\u3088\u3046\u306b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306e\u7b2c\u4e8c\u5f15\u6570\u306b\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5024\u3092\u5165\u308c\u308b\u3053\u3068\u304c\u51fa\u6765\u308b\u306e\u3067\u3001\u95a2\u6570\u5185\u3067\u9806\u756a\u306e\u64cd\u4f5c\u3084\u78ba\u8a8d\u3082\u51fa\u6765\u307e\u3059\u3002\u3061\u306a\u307f\u306b\u7b2c\u4e09\u5f15\u6570\u306b\u306fArray\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u7a81\u3063\u8fbc\u3080\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u304c\u3001\u307b\u3068\u3093\u3069\u4f7f\u3046\u6a5f\u4f1a\u304c\u306a\u3055\u305d\u3046\u306a\u306e\u3067\u3001\u51fa\u6765\u308b\u3088\u3063\u3066\u3053\u3068\u3060\u3051\u62bc\u3055\u3048\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6481058887327275\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-6481058887327275\" data-ad-slot=\"6649918654\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"some\"><span class=\"ez-toc-section\" id=\"some%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89_%E2%80%93_%E6%9D%A1%E4%BB%B6%E3%82%92%E6%BA%80%E3%81%9F%E3%81%99%E8%A6%81%E7%B4%A0%E3%81%8C%E3%81%B2%E3%81%A8%E3%81%A4%E3%81%A7%E3%82%82%E3%81%82%E3%82%8B%E3%81%8B%E5%88%A4%E5%AE%9A\"><\/span>some()\u30e1\u30bd\u30c3\u30c9 &#8211; \u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u304c\u3072\u3068\u3064\u3067\u3082\u3042\u308b\u304b\u5224\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">some()\u30e1\u30bd\u30c3\u30c9\u306f\u5c11\u3057\u3084\u3084\u3053\u3057\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u6a5f\u80fd\u3068\u3057\u3066\u306f\u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u304c<strong>\u3072\u3068\u3064\u3067\u3082\u3042\u308b\u304b\u3069\u3046\u304b<\/strong>\u3092\u5224\u5225\u3059\u308b\u95a2\u6570\u3067\u3059\u3002\u5f93\u3063\u3066true\u304bfalse\u306eboolean\u578b\u3057\u304b\u8fd4\u3063\u3066\u304d\u307e\u305b\u3093\u3002\u3042\u308c\u3070true\u3001\u306a\u3051\u308c\u3070false\u3068\u3044\u3046\u611f\u3058\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3084\u3084\u3053\u3057\u3044\u3068\u8a00\u3063\u305f\u306e\u306f\u3001some()\u30e1\u30bd\u30c3\u30c9\u306b\u306f\u30a2\u30ed\u30fc\u95a2\u6570\u304c\u3082\u308c\u306a\u304f\u3064\u3044\u3066\u304f\u308b\u3053\u3068\u304c\u591a\u3044\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u6b21\u306e\u4f8b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 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%89-2\"><\/span>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"some.js\" data-lang=\"JavaScript\"><code>const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\n\nconsole.log(arr.some(value =&gt; value &lt; 6)); \/\/ true \u304c\u51fa\u529b\u3055\u308c\u308b\n\nconsole.log(arr.some(value =&gt; value &gt; 10.5)); \/\/ false \u304c\u51fa\u529b\u3055\u308c\u308b<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3061\u3087\u3063\u3068\u3076\u3063\u304d\u3089\u307c\u3046\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u306e\u3067\u3082\u3046\u5c11\u3057\u7815\u3044\u3066\u8a18\u8f09\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"some-2.js\" data-lang=\"JavaScript\"><code>const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\n\nlet checkLower10 = arr.some(value =&gt; value &lt; 10); \/\/ true \u304c\u51fa\u529b\u3055\u308c\u308b\nconsole.log(checkLower10);\n\n\/\/ \u3061\u306a\u307f\u306b\u4e0a\u8a18\u306e\u300cvalue\u300d\u3067\u3059\u304c\u300cv\u300d\u3067\u3082\u300ce\u300d\u3067\u3082\u69cb\u3044\u307e\u305b\u3093\u3002\u4fbf\u5b9c\u4e0a\u306bvalue\u3068\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002\nlet checkLower10 = arr.some(e =&gt; e &lt; 10); \/\/ true \u304c\u51fa\u529b\u3055\u308c\u308b\nconsole.log(checkLower10);\n\nlet checkUpper10 = arr.some(value =&gt; value &gt; 10); \/\/ false \u304c\u51fa\u529b\u3055\u308c\u308b\nconsole.log(checkUpper10);<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u5c11\u306f\u8a8d\u8b58\u3057\u3084\u3059\u304f\u306a\u3063\u305f\u3067\u3057\u3087\u3046\u304b\u3002\u4f8b\u306e\u901a\u308a\u5408\u81f4\u3059\u308b\u3082\u306e\u304c\u3042\u308c\u3070true\u3001\u5408\u81f4\u3059\u308b\u3082\u306e\u304c\u7121\u3051\u308c\u3070false\u304c\u8fd4\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408\u306f\u3069\u3046\u66f8\u3051\u3070\u3088\u3044\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"some-2.js\" data-lang=\"JavaScript\"><code>const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\n\nfunction isUpper8(element) {\n  return element &gt; 8;\n}\n\nconsole.log(arr.some(isUpper8));<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3046\u30fc\u3093\u3001\u660e\u3089\u304b\u306b\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u4f7f\u3063\u305f\u65b9\u304c\u30b9\u30c6\u30c3\u30d7\u6570\u304c\u5c11\u306a\u304f\u3066\u30b9\u30c3\u30ad\u30ea\u306f\u3057\u307e\u3059\u306d\u3002\u3053\u306e\u6a5f\u4f1a\u306b\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u7406\u89e3\u3057\u3066\u304a\u3044\u3066\u3001\u8272\u3093\u306a\u30e1\u30bd\u30c3\u30c9\u306b\u5bfe\u5fdc\u51fa\u6765\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304f\u3068\u3001\u4e16\u754c\u304c\u5e83\u304c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u662f\u975e\u30a2\u30ed\u30fc\u95a2\u6570\u3067\u66f8\u3051\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a2\u30ed\u30fc\u95a2\u6570\u5f0f\u306b\u3064\u3044\u3066\u306f\u5225\u9014\u8a18\u4e8b\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u4e0b\u8a18\u3092\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-qootechweb wp-block-embed-qootechweb\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"3YfzllV379\"><a href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-arrow-function\/\">\u3010JavaScript\u3011\u30a2\u30ed\u30fc\u95a2\u6570\u3068\u306f\uff01\uff1f\u305f\u3063\u305f6\u3064\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u304a\u3055\u3048\u3066\u3001\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201c\u3010JavaScript\u3011\u30a2\u30ed\u30fc\u95a2\u6570\u3068\u306f\uff01\uff1f\u305f\u3063\u305f6\u3064\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u304a\u3055\u3048\u3066\u3001\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01\u201d \u2014 QooTechWEB-\u958b\u767a\u30ed\u30b0\u30fb\u5b9f\u52d9\u8a18\u9332\u30d6\u30ed\u30b0\" src=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-arrow-function\/embed\/#?secret=tnx6lM8IyZ#?secret=3YfzllV379\" data-secret=\"3YfzllV379\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6481058887327275\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-6481058887327275\" data-ad-slot=\"6649918654\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"every\"><span class=\"ez-toc-section\" id=\"every%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89_%E2%80%93_%E5%85%A8%E8%A6%81%E7%B4%A0%E3%81%8C%E6%9D%A1%E4%BB%B6%E3%82%92%E6%BA%80%E3%81%9F%E3%81%99%E3%81%8B%E5%88%A4%E5%AE%9A\"><\/span>every()\u30e1\u30bd\u30c3\u30c9 &#8211; \u5168\u8981\u7d20\u304c\u6761\u4ef6\u3092\u6e80\u305f\u3059\u304b\u5224\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u914d\u5217\u5185\u306e\u8981\u7d20\u304c\u3059\u3079\u3066\u6761\u4ef6\u304c\u5408\u81f4\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u305b\u3063\u304b\u304f\u306a\u306e\u3067\u30a2\u30ed\u30fc\u95a2\u6570\u3067\u7df4\u7fd2\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"every.js\" data-lang=\"JavaScript\"><code>const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\n\nlet checkUpper4 = arr.every(e =&gt; e &gt; 4);\nconsole.log(checkUpper4); \/\/ \u5168\u8981\u7d20\u304c4\u3088\u308a\u5927\u304d\u3044\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067false\u306b\u306a\u308b<\/code><\/pre><\/div>\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6481058887327275\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-6481058887327275\" data-ad-slot=\"6649918654\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"includes\"><span class=\"ez-toc-section\" id=\"includes%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89\"><\/span>includes()\u30e1\u30bd\u30c3\u30c9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306f\u96e3\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u30a2\u30ed\u30fc\u95a2\u6570\u3082\u4f7f\u308f\u306a\u3044\u3067\u3059\u3057\u3001\u5358\u7d14\u306b\u6307\u5b9a\u3057\u305f\u5024\u304c\u914d\u5217\u5185\u306b\u5b58\u5728\u3059\u308b\u304b\uff08\u542b\u307e\u308c\u3066\u3044\u308b\u304b\uff09\u306e\u30c1\u30a7\u30c3\u30af\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-js\" data-file=\"includes.js\" data-lang=\"JavaScript\"><code>let sampleArray = [3, 4, 6, 777, 8192, 65536];\n\nlet isIncluded = sampleArray.includes(777);\nconsole.log(isIncluded); \/\/ 777 \u306f\u914d\u5217\u306b\u542b\u307e\u308c\u3066\u3044\u308b\uff08\u30a4\u30f3\u30af\u30eb\u30fc\u30c9\u3055\u308c\u3066\u3044\u308b\uff09\u306e\u3067true\u304c\u8fd4\u308b<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3069\u3061\u3089\u304b\u3068\u3044\u3046\u3068\u3001Array.isArray()\u30e1\u30bd\u30c3\u30c9\u306b\u4f3c\u3066\u3044\u307e\u3059\u306d\u3002\u305d\u3093\u306a\u306b\u5f15\u3063\u304b\u304b\u308b\u7b87\u6240\u306f\u306a\u3044\u306e\u3067\u3001\u3053\u3046\u3044\u3046\u3053\u3068\u3082\u51fa\u6765\u308b\u3088\u3001\u3063\u3066\u3053\u3068\u3067\u899a\u3048\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002\u7d76\u671b\u7684\u306b\u9577\u3044\u914d\u5217\u306e\u6642\u306b\u3001\u8981\u7d20\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u77e5\u3059\u308b\u305f\u3081\u306b\u4f7f\u3044\u307e\u3059\u3002\u975e\u5e38\u306b\u52b9\u7387\u7684\u306b\u8abf\u3079\u308b\u3053\u3068\u304c\u51fa\u6765\u308b\u306e\u3067\u304a\u3059\u3059\u3081\u3067\u3059\u3002\uff08\u307e\u3055\u304b\u76ee\u8996\u3068\u304bCtrl+F\u3068\u304b\u3057\u3066\u307e\u305b\u3093\u3088\u306d\u2026\u2026\uff1f\u7b11\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83%E6%96%87%E7%8C%AE\"><\/span>\u53c2\u8003\u6587\u732e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript_%E7%AC%AC7%E7%89%88_%E5%8D%98%E8%A1%8C%E6%9C%AC%EF%BC%88%E3%82%BD%E3%83%95%E3%83%88%E3%82%AB%E3%83%90%E3%83%BC%EF%BC%89_%E2%80%93_2021122\"><\/span>JavaScript \u7b2c7\u7248&nbsp;\u5358\u884c\u672c\uff08\u30bd\u30d5\u30c8\u30ab\u30d0\u30fc\uff09 \u2013 2021\/12\/2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p>[amazon]<\/p>\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6481058887327275\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-6481058887327275\" data-ad-slot=\"6649918654\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Array\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9 \u5224\u5b9a\u30fb\u5224\u5225\u306e\u7528\u9014 isArray() \u914d\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308b\u304b\uff1f find() \u6761\u4ef6\u3092\u6e80\u305f\u3059\u5024\u3092\u53d6\u5f97\u3059\u308b some() \u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u304c\u3072\u3068\u3064\u3067\u3082\u3042\u308b\u304b\uff1f every() \u5168\u8981\u7d20\u304c\u6761\u4ef6 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3331,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55,43],"tags":[8,88,39,48],"class_list":["post-2555","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript","category-43","tag-javascript","tag-88","tag-39","tag-48"],"_links":{"self":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/2555","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=2555"}],"version-history":[{"count":104,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/2555\/revisions"}],"predecessor-version":[{"id":3387,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/2555\/revisions\/3387"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/media\/3331"}],"wp:attachment":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/media?parent=2555"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/categories?post=2555"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/tags?post=2555"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}