{"id":59,"date":"2025-10-04T23:44:58","date_gmt":"2025-10-04T14:44:58","guid":{"rendered":"https:\/\/goto-take-1106.secret.jp\/blog\/?p=59"},"modified":"2025-10-10T13:22:32","modified_gmt":"2025-10-10T04:22:32","slug":"javascript%e3%81%ae%e5%a4%89%e6%95%b0","status":"publish","type":"post","link":"https:\/\/goto-take-1106.secret.jp\/blog\/javascript%e3%81%ae%e5%a4%89%e6%95%b0\/","title":{"rendered":"JavaScript\u306e\u5909\u6570"},"content":{"rendered":"\n<p>\u3000JavaScript\u3067\u306f\u5909\u6570\u3092\u8a18\u8ff0\u3059\u308b\u969b\u306b\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\uff13\u3064\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u304c\u300clet\u300d\u3001\u300cconst\u300d\u3001\u300cvar\u300d\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u4eca\u3068\u306a\u3063\u3066\u306f\u3053\u306e\uff13\u3064\u306e\u3046\u3061\u300cvar\u300d\u306f\u57fa\u672c\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u306a\u306e\u3067\u3001\u3053\u308c\u304b\u3089\uff11\u3064\u305a\u3064\u306e\u7d30\u304b\u3044\u8aac\u660e\u3092\u3057\u3066\u304d\u306a\u304c\u3089\u3001\u306a\u305c\u4f7f\u308f\u308c\u306a\u304f\u306a\u3063\u305f\u306e\u304b\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<label class=\"ez-toc-title\" style=\"cursor:inherit\">\u3082\u304f\u3058<\/label>\n<span class=\"ez-toc-title-toggle\"><\/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:\/\/goto-take-1106.secret.jp\/blog\/javascript%e3%81%ae%e5%a4%89%e6%95%b0\/#consolelog%E3%81%A8%E3%81%AF\" >console.log()\u3068\u306f<\/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:\/\/goto-take-1106.secret.jp\/blog\/javascript%e3%81%ae%e5%a4%89%e6%95%b0\/#%E4%BD%95%E3%82%92%E3%81%99%E3%82%8B%E3%81%9F%E3%82%81%E3%81%AE%E3%82%82%E3%81%AE%EF%BC%9F\" >\u4f55\u3092\u3059\u308b\u305f\u3081\u306e\u3082\u306e\uff1f<\/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:\/\/goto-take-1106.secret.jp\/blog\/javascript%e3%81%ae%e5%a4%89%e6%95%b0\/#%E5%AE%A3%E8%A8%80%E6%96%B9%E6%B3%95\" >\u5ba3\u8a00\u65b9\u6cd5<\/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:\/\/goto-take-1106.secret.jp\/blog\/javascript%e3%81%ae%e5%a4%89%e6%95%b0\/#%E5%A4%89%E6%95%B0%E5%AE%A3%E8%A8%80\" >\u5909\u6570\u5ba3\u8a00<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/goto-take-1106.secret.jp\/blog\/javascript%e3%81%ae%e5%a4%89%e6%95%b0\/#%E5%A4%89%E6%95%B0%E5%90%8D%E3%83%BB%E5%80%A4\" >\u5909\u6570\u540d\u30fb\u5024<\/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:\/\/goto-take-1106.secret.jp\/blog\/javascript%e3%81%ae%e5%a4%89%e6%95%b0\/#let%E3%81%A8const%E3%81%AE%E9%81%95%E3%81%84\" >let\u3068const\u306e\u9055\u3044<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/goto-take-1106.secret.jp\/blog\/javascript%e3%81%ae%e5%a4%89%e6%95%b0\/#var%E3%81%AF%E4%BD%95%E3%81%8C%E9%81%95%E3%81%86%E3%81%AE%EF%BC%9F\" >var\u306f\u4f55\u304c\u9055\u3046\u306e\uff1f<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"consolelog%E3%81%A8%E3%81%AF\"><\/span>console.log()\u3068\u306f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u305d\u306e\u524d\u306b\u5909\u6570\u306e\u8a71\u306e\u4e2d\u3067\u300cconsole.log()\u300d\u3000\u3068\u3044\u3046\u306e\u304c\u3042\u308a\u3001\u3053\u308c\u304c\u304b\u306a\u308a\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BD%95%E3%82%92%E3%81%99%E3%82%8B%E3%81%9F%E3%82%81%E3%81%AE%E3%82%82%E3%81%AE%EF%BC%9F\"><\/span>\u4f55\u3092\u3059\u308b\u305f\u3081\u306e\u3082\u306e\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u3000\u300cconsole.log()\u300d\u306f\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u306e\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u5185\u306b\u3042\u308b\u300c\u30b3\u30f3\u30bd\u30fc\u30eb\u300d\u306b\u3001\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3001\u5909\u6570\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u3069\u306e\u5024\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306eJavaScript\u306e\u95a2\u6570\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u203b\u30b3\u30f3\u30bd\u30fc\u30eb\u306e\u958b\u304d\u65b9\uff1a\u30d6\u30e9\u30a6\u30b6\u306e\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u3092\u958b\u3044\u3066\u3001\u300c\u30b3\u30f3\u30bd\u30fc\u30eb\u300d\u30bf\u30d6\u3092\u9078\u629e\u3059\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%AE%A3%E8%A8%80%E6%96%B9%E6%B3%95\"><\/span>\u5ba3\u8a00\u65b9\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3000\u305d\u308c\u3067\u306f\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u65e9\u901f\u5ba3\u8a00\u3057\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%A4%89%E6%95%B0%E5%AE%A3%E8%A8%80\"><\/span>\u5909\u6570\u5ba3\u8a00<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u3000\u5909\u6570\u3092\u7528\u610f\u3057\u3066\u3001\u4f7f\u3048\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3092\u5909\u6570\u5ba3\u8a00\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%A4%89%E6%95%B0%E5%90%8D%E3%83%BB%E5%80%A4\"><\/span>\u5909\u6570\u540d\u30fb\u5024<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u3000\u5909\u6570\u306e\u540d\u524d\u3092\u5909\u6570\u3068\u3044\u3044\u3001\u5909\u6570\u306b\u5165\u308c\u308b\u30c7\u30fc\u30bf\u306e\u3053\u3068\u3092\u5024\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"codepen\" data-height=\"300\" data-default-tab=\"html,result\" data-slug-hash=\"vELgMYK\" data-pen-title=\"Untitled\" data-user=\"espancgx-the-sans\" style=\"height: 300px; box-sizing: border-box; display: flex; align-items: center; justify-content: center; border: 2px solid; margin: 1em 0; padding: 1em;\">\n  <span>See the Pen <a href=\"https:\/\/codepen.io\/espancgx-the-sans\/pen\/vELgMYK\">\n  Untitled<\/a> by \u5f8c\u85e4\u5320 (<a href=\"https:\/\/codepen.io\/espancgx-the-sans\">@espancgx-the-sans<\/a>)\n  on <a href=\"https:\/\/codepen.io\">CodePen<\/a>.<\/span>\n<\/p>\n<script async src=\"https:\/\/public.codepenassets.com\/embed\/index.js\"><\/script>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"let%E3%81%A8const%E3%81%AE%E9%81%95%E3%81%84\"><\/span>let\u3068const\u306e\u9055\u3044<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3000\u300clet\u300d\u3001\u300cconst\u300d\u3082\u57fa\u672c\u7684\u306b\u306f\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u305f\u3081\u306e\u30ad\u30fc\u30ef\u30fc\u30c9\u3060\u3068\u3044\u3046\u3053\u3068\u306b\u5909\u308f\u308a\u306f\u306a\u3044\u304c\u3001\u9055\u3044\u306f\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u306f\u3001\u518d\u4ee3\u5165\u304c\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u3067\u3059\u3002JavaScript\u306b\u304a\u3044\u3066\u518d\u4ee3\u5165\u3068\u306f\u3001\u65e2\u306b\u5024\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5909\u6570\u306b\u3001\u65b0\u3057\u3044\u5024\u3092\u4e0a\u66f8\u304d\u3057\u3066\u4ee3\u5165\u3059\u308b\u3053\u3068\u3092\u8a00\u3044\u307e\u3059\u3002\u305d\u308c\u304c\u300clet\u300d\u3067\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u300cconst\u300d\u3067\u518d\u4ee3\u5165\u3092\u4f7f\u7528\u3057\u3088\u3046\u3068\u3059\u308b\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"codepen\" data-height=\"300\" data-default-tab=\"html,result\" data-slug-hash=\"QwydoJO\" data-pen-title=\"Untitled\" data-user=\"espancgx-the-sans\" style=\"height: 300px; box-sizing: border-box; display: flex; align-items: center; justify-content: center; border: 2px solid; margin: 1em 0; padding: 1em;\">\n  <span>See the Pen <a href=\"https:\/\/codepen.io\/espancgx-the-sans\/pen\/QwydoJO\">\n  Untitled<\/a> by \u5f8c\u85e4\u5320 (<a href=\"https:\/\/codepen.io\/espancgx-the-sans\">@espancgx-the-sans<\/a>)\n  on <a href=\"https:\/\/codepen.io\">CodePen<\/a>.<\/span>\n<\/p>\n<script async src=\"https:\/\/public.codepenassets.com\/embed\/index.js\"><\/script>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"var%E3%81%AF%E4%BD%95%E3%81%8C%E9%81%95%E3%81%86%E3%81%AE%EF%BC%9F\"><\/span>var\u306f\u4f55\u304c\u9055\u3046\u306e\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3000\u300cvar\u300d\u3082\u57fa\u672c\u7684\u306b\u540c\u3058\u304f\u5909\u6570\u5ba3\u8a00\u3059\u308b\u6700\u3082\u53e4\u304f\u304b\u3089\u3042\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3059\u3002\u307b\u304b\u306e\uff12\u3064\u3068\u9055\u3044\u306f\u3001\u518d\u4ee3\u5165\u3068\u518d\u5ba3\u8a00\u304c\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u306a\u3089\u306a\u305c\u3001\u300cvar\u300d\u306f\u4f7f\u308f\u308c\u306a\u304f\u306a\u3063\u305f\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u305d\u308c\u306f\u3001\u4e88\u671f\u305b\u306c\u518d\u4ee3\u5165\u306a\u3069\u304c\u8d77\u304d\u3066\u3057\u307e\u3044\u3001\u30d0\u30b0\u304c\u8d77\u3053\u3063\u3066\u3057\u307e\u3046\u304b\u3089\u3067\u3059\u3002\u300clet\u300d\u3001\u300cconst\u300d\u3067\u306f\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u307e\u3059\u3002\u300cvar\u300d\u3067\u306fundefined\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u300cvar\u300d\u306f\u30d0\u30b0\u306e\u6e29\u5e8a\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u306b\u306a\u308a\u4f7f\u308f\u308c\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3000JavaScript\u3067\u306f\u5909\u6570\u3092\u8a18\u8ff0\u3059\u308b\u969b\u306b\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\uff13\u3064\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u304c\u300clet\u300d\u3001\u300cconst\u300d\u3001\u300cvar\u300d\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u4eca\u3068\u306a\u3063\u3066\u306f\u3053\u306e\uff13\u3064\u306e\u3046\u3061\u300cvar\u300d\u306f\u57fa\u672c\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u306a\u306e\u3067\u3001\u3053\u308c\u304b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":67,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-59","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript"],"_links":{"self":[{"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/posts\/59","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/comments?post=59"}],"version-history":[{"count":6,"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/posts\/59\/revisions"}],"predecessor-version":[{"id":76,"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/posts\/59\/revisions\/76"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/media\/67"}],"wp:attachment":[{"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/media?parent=59"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/categories?post=59"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/goto-take-1106.secret.jp\/blog\/wp-json\/wp\/v2\/tags?post=59"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}