{"id":1209,"date":"2022-06-12T23:54:21","date_gmt":"2022-06-12T14:54:21","guid":{"rendered":"http:\/\/160.251.208.217\/?p=1209"},"modified":"2024-03-18T21:20:35","modified_gmt":"2024-03-18T12:20:35","slug":"js-foreach","status":"publish","type":"post","link":"https:\/\/it-dxblog.com\/blog\/js-foreach\/","title":{"rendered":"\u3010JavaScript\u3011forEach\u3068for\u6587\u306e\u6bd4\u8f03"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">JavaScript\u306efor\u6587\u3068forEach\u306e\u6bd4\u8f03\u3092\u307e\u3068\u3081\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br>\u4ed6\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u8a00\u8a9e\u3067for\u6587\u3092\u4f7f\u3048\u308b\u65b9\u3067\u3082\u3001JavaScript\u306eforEach\u306f\u3068\u3063\u3064\u304d\u306b\u304f\u3044\u306e\u3067\u3001\u5c11\u3057\u3067\u3082\u53c2\u8003\u306b\u306a\u3089\u3070\u5b09\u3057\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-0\"><span class=\"sgb-heading__inner sgb-heading--type2 with-icon\" style=\"background-color:var(--sgb-main-color);border-color:transparent;font-size:1.2em\"><i class=\"fa fa-chevron-circle-right\" style=\"color:rgba(255,255,255,.6)\"><\/i><span class=\"sgb-heading__text\" style=\"color:#FFF\">forEach\u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8<\/span><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">forEach\u306f\u3001for\u6587\u3068\u6bd4\u3079\u308b\u3068\u6b21\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<div id=\"sgb-list-id-1\">\n<div class=\"wp-block-sgb-list\"><div class=\"li-chevron\"><ul style=\"border-color:var(--sgb-main-color)\"><li>\u8a18\u8ff0\u304c\u7c21\u6f54\u306b\u306a\u308b<\/li><li>\u5909\u6570\u3092\u6e1b\u3089\u305b\u308b<\/li><\/ul><\/div><\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-1\"><span class=\"sgb-heading__inner sgb-heading--type2 with-icon\" style=\"background-color:var(--sgb-main-color);border-color:transparent;font-size:1.2em\"><i class=\"fa fa-chevron-circle-right\" style=\"color:rgba(255,255,255,.6)\"><\/i><span class=\"sgb-heading__text\" style=\"color:#FFF\">for\u6587\u3067\u914d\u5217\u306e\u8981\u7d20\u3092\u53d6\u308a\u51fa\u3059<\/span><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u306ffor\u6587\u3067\u3059\u3002\u8981\u7d20\u304c10\uff5e50\u307e\u306710\u305a\u3064\u5897\u3048\u308b\u914d\u5217\uff08numbers\uff09\u3092\u7528\u610f\u3057\u3001for\u6587\u3067\u914d\u5217\u306e\u5024\u3092\u9806\u306b\u53d6\u308a\u51fa\u3059\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-highlight-color:rgba(234, 191, 191, 0.2);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2b2b2b;color:#c7c7c7\">JavaScript<\/span><span role=\"button\" tabindex=\"0\" data-code=\"<script>\n  const array_numbers = [10, 20, 30, 40, 50];\n\n  console.log(&quot;&#8212;&#8211; for\u6587\u3067\u914d\u5217\u306e\u5024\u3092\u53d6\u308a\u51fa\u3059 &#8212;&#8211;&quot;);\n  for (let i = 0; i < array_numbers.length; i++) {\n    console.log(array_numbers[i]);\n  }\n<\/script>&#8221; style=&#8221;color:#D4D4D4;display:none&#8221; aria-label=&#8221;Copy&#8221; class=&#8221;code-block-pro-copy-button&#8221;><svg style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\" \/><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\" \/><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  const array_numbers = [10, 20, 30, 40, 50];<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  console.log(\"----- for\u6587\u3067\u914d\u5217\u306e\u5024\u3092\u53d6\u308a\u51fa\u3059 -----\");<\/span><\/span>\n<span class=\"line cbp-line-highlight\"><span style=\"color: #D4D4D4\">  for (let i = 0; i &lt; array_numbers.length; i++) <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">array_numbers<\/span><span style=\"color: #D4D4D4\">[<\/span><span style=\"color: #9CDCFE\">i<\/span><span style=\"color: #D4D4D4\">]);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #569CD6\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u884c\u7d50\u679c\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-sango-with-border\"><img loading=\"lazy\" decoding=\"async\" width=\"495\" height=\"123\" src=\"http:\/\/160.251.208.217\/wp-content\/uploads\/2022\/06\/image-18.png\" alt=\"\" class=\"wp-image-1218\" srcset=\"https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-18.png 495w, https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-18-300x75.png 300w\" sizes=\"auto, (max-width: 495px) 100vw, 495px\"><\/figure>\n\n\n\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-2\"><span class=\"sgb-heading__inner sgb-heading--type2 with-icon\" style=\"background-color:var(--sgb-main-color);border-color:transparent;font-size:1.2em\"><i class=\"fa fa-chevron-circle-right\" style=\"color:rgba(255,255,255,.6)\"><\/i><span class=\"sgb-heading__text\" style=\"color:#FFF\">forEach\u3067\u914d\u5217\u306e\u8981\u7d20\u3092\u53d6\u308a\u51fa\u3059<\/span><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u307b\u3069\u306efor\u6587\u3092forEach\u3092\u4f7f\u3046\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u66f8\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-highlight-color:rgba(234, 191, 191, 0.2);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2b2b2b;color:#c7c7c7\">JavaScript<\/span><span role=\"button\" tabindex=\"0\" data-code=\"<script>\n  const array_numbers = [10, 20, 30, 40, 50];\n\n  console.log(&quot;&#8212;&#8211; forEach\u3067\u914d\u5217\u306e\u5024\u3092\u53d6\u308a\u51fa\u3059 &#8212;&#8211;&quot;);\n  array_numbers.forEach((number) => {\n    console.log(number);\n  });\n<\/script>&#8221; style=&#8221;color:#D4D4D4;display:none&#8221; aria-label=&#8221;Copy&#8221; class=&#8221;code-block-pro-copy-button&#8221;><svg style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\" \/><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\" \/><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  const array_numbers = [10, 20, 30, 40, 50];<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  console.log(\"----- forEach\u3067\u914d\u5217\u306e\u5024\u3092\u53d6\u308a\u51fa\u3059 -----\");<\/span><\/span>\n<span class=\"line cbp-line-highlight\"><span style=\"color: #D4D4D4\">  array_numbers.forEach((number) =&gt; <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">number<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #569CD6\">}<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<figure class=\"wp-block-image size-full is-style-sango-with-border\"><img loading=\"lazy\" decoding=\"async\" width=\"502\" height=\"127\" src=\"http:\/\/160.251.208.217\/wp-content\/uploads\/2022\/06\/image-19.png\" alt=\"\" class=\"wp-image-1219\" srcset=\"https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-19.png 502w, https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-19-300x76.png 300w\" sizes=\"auto, (max-width: 502px) 100vw, 502px\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">for\u6587\u3068\u6bd4\u3079\u308b\u3068\u3001<strong><span class=\"keiko_green\">\u8a18\u8ff0\u304c\u7c21\u6f54<\/span><\/strong>\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br>\u307e\u305f\u3001for\u6587\u3067\u4f7f\u7528\u3057\u305f<strong>\u5909\u6570i<\/strong>\u3092\u4f7f\u308f\u306a\u304f\u3066\u3082\u3001\u5024\u304c\u53d6\u308a\u51fa\u305b\u307e\u3059\u3002<br>\u3067\u304d\u308b\u3060\u3051\u5909\u6570\u3092\u6e1b\u3089\u3057\u305f\u65b9\u304c\u30d0\u30b0\u304c\u51fa\u306b\u304f\u304f\u306a\u308b\u306e\u3067\u3001\u5927\u898f\u6a21\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u969b\u306fforEach\u304c\u4f7f\u3048\u308b\u3068\u3053\u308d\u306fforEach\u3092\u4f7f\u3063\u305f\u65b9\u304c\u3088\u3044\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3061\u306a\u307f\u306b\u3001forEach\u306e<strong>\u7b2c\u4e8c\u5f15\u6570<\/strong>\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u914d\u5217\u306e<strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7<\/strong>\u3082\u53d6\u308a\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-highlight-color:rgba(234, 191, 191, 0.2);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2b2b2b;color:#c7c7c7\">JavaScript<\/span><span role=\"button\" tabindex=\"0\" data-code=\"<script>\n  const array_numbers = [10, 20, 30, 40, 50];\n\n  console.log(&quot;&#8212;&#8211; forEach\u3067\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3068\u5024\u3092\u53d6\u308a\u51fa\u3059 &#8212;&#8211;&quot;);\n  array_numbers.forEach((number, index) => {\n    console.log(index, number);\n  });\n<\/script>&#8221; style=&#8221;color:#D4D4D4;display:none&#8221; aria-label=&#8221;Copy&#8221; class=&#8221;code-block-pro-copy-button&#8221;><svg style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\" \/><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\" \/><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  const array_numbers = [10, 20, 30, 40, 50];<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  console.log(\"----- forEach\u3067\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3068\u5024\u3092\u53d6\u308a\u51fa\u3059 -----\");<\/span><\/span>\n<span class=\"line cbp-line-highlight\"><span style=\"color: #D4D4D4\">  array_numbers.forEach((number, index) =&gt; <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">index<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #9CDCFE\">number<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #569CD6\">}<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<figure class=\"wp-block-image size-full is-style-sango-with-border\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"120\" src=\"http:\/\/160.251.208.217\/wp-content\/uploads\/2022\/06\/image-20.png\" alt=\"\" class=\"wp-image-1220\" srcset=\"https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-20.png 480w, https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-20-300x75.png 300w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\"><\/figure>\n\n\n\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-3\"><span class=\"sgb-heading__inner sgb-heading--type2 with-icon\" style=\"background-color:var(--sgb-main-color);border-color:transparent;font-size:1.2em\"><i class=\"fa fa-chevron-circle-right\" style=\"color:rgba(255,255,255,.6)\"><\/i><span class=\"sgb-heading__text\" style=\"color:#FFF\">\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/span><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u307e\u3067\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2b2b2b;color:#c7c7c7\">JavaScript<\/span><span role=\"button\" tabindex=\"0\" data-code=\"<!DOCTYPE html>\n<html lang=&quot;ja&quot;>\n  <head>\n    <meta charset=&quot;UTF-8&quot; \/>\n    <meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot; \/>\n    <title>forEach<\/title>\n  <\/head>\n  <body>\n    <script>\n      const array_numbers = [10, 20, 30, 40, 50];\n\n      console.log(&quot;----- for\u6587\u3067\u914d\u5217\u306e\u5024\u3092\u53d6\u308a\u51fa\u3059 -----&quot;);\n      for (let i = 0; i < array_numbers.length; i++) {\n        console.log(array_numbers[i]);\n      }\n\n      console.log(&quot;----- forEach\u3067\u914d\u5217\u306e\u5024\u3092\u53d6\u308a\u51fa\u3059 -----&quot;);\n      array_numbers.forEach((number) => {\n        console.log(number);\n      });\n\n      console.log(&quot;----- forEach\u3067\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3068\u5024\u3092\u53d6\u308a\u51fa\u3059 -----&quot;);\n      array_numbers.forEach((number, index) => {\n        console.log(index, number);\n      });\n    <\/script>\n  <\/body>\n<\/html>&#8221; style=&#8221;color:#D4D4D4;display:none&#8221; aria-label=&#8221;Copy&#8221; class=&#8221;code-block-pro-copy-button&#8221;><svg style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\" \/><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\" \/><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">&lt;!<\/span><span style=\"color: #4FC1FF\">DOCTYPE<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">html<\/span><span style=\"color: #D4D4D4\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">html<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">lang<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"ja\"<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">head<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">meta<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">charset<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"UTF-8\"<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #808080\">\/&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">meta<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">name<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"viewport\"<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">content<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"width=device-width, initial-scale=1.0\"<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #808080\">\/&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">title<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">forEach<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">title<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">head<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">body<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      const array_numbers = [10, 20, 30, 40, 50];<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      console.log(\"----- for\u6587\u3067\u914d\u5217\u306e\u5024\u3092\u53d6\u308a\u51fa\u3059 -----\");<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      for (let i = 0; i &lt; array_numbers.length; i++) <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">array_numbers<\/span><span style=\"color: #D4D4D4\">[<\/span><span style=\"color: #9CDCFE\">i<\/span><span style=\"color: #D4D4D4\">]);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #569CD6\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      console.log(\"----- forEach\u3067\u914d\u5217\u306e\u5024\u3092\u53d6\u308a\u51fa\u3059 -----\");<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      array_numbers.forEach((number) =&gt; <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">number<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #569CD6\">}<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      console.log(\"----- forEach\u3067\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3068\u5024\u3092\u53d6\u308a\u51fa\u3059 -----\");<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      array_numbers.forEach((number, index) =&gt; <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">index<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #9CDCFE\">number<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #569CD6\">}<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">body<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">html<\/span><span style=\"color: #808080\">&gt;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-4\"><span class=\"sgb-heading__inner sgb-heading--type2 with-icon\" style=\"background-color:var(--sgb-main-color);border-color:transparent;font-size:1.2em\"><i class=\"fa fa-chevron-circle-right\" style=\"color:rgba(255,255,255,.6)\"><\/i><span class=\"sgb-heading__text\" style=\"color:#FFF\">querySelectorAll\u3067\u53d6\u308a\u51fa\u3057\u305f\u8981\u7d20\u3092\u30eb\u30fc\u30d7\u3055\u305b\u308b<\/span><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"keiko_green\">querySelectorAll<\/span><\/strong>\u3067\u53d6\u308a\u51fa\u3059\u306e\u306f\u3001\u30ce\u30fc\u30c9\u30ea\u30b9\u30c8\u306b\u306a\u308a\u307e\u3059\u304c\u3001<strong><span class=\"keiko_green\">forEach<\/span><\/strong>\u3092\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u6b21\u306e\u3088\u3046\u306a\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u3001\u4e00\u756a\u53f3\u306e<strong>\u51fa\u8eab\u5730<\/strong>\uff08td\u30bf\u30b0\u306b<strong>class=\u201dplace\u201d<\/strong>\u3092\u8a2d\u5b9a\uff09\u3092\u53d6\u308a\u51fa\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-sango-with-border\"><img loading=\"lazy\" decoding=\"async\" width=\"324\" height=\"126\" src=\"http:\/\/160.251.208.217\/wp-content\/uploads\/2022\/06\/image-21.png\" alt=\"\" class=\"wp-image-1227\" srcset=\"https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-21.png 324w, https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-21-300x117.png 300w\" sizes=\"auto, (max-width: 324px) 100vw, 324px\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e3\u30d1\u30bf\u30fc\u30f3\u306e\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n\n\n<div id=\"sgb-list-id-2\">\n<div class=\"wp-block-sgb-list\"><div class=\"ol-circle\"><ol style=\"border-color:var(--sgb-main-color)\"><li>for\u6587\u3092\u4f7f\u7528<\/li><li>forEach\u3092\u4f7f\u7528<\/li><li>forEach\u3092\u4f7f\u7528\u3057\u30012\u3088\u308a\u5909\u6570\u3092\u6e1b\u3089\u3057\u305f<\/li><\/ol><\/div><\/div>\n<\/div>\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2b2b2b;color:#c7c7c7\">JavaScript<\/span><span role=\"button\" tabindex=\"0\" data-code=\"<!DOCTYPE html>\n<html lang=&quot;ja&quot;>\n  <head>\n    <meta charset=&quot;UTF-8&quot; \/>\n    <meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot; \/>\n    <title>forEach<\/title>\n  <\/head>\n  <body>\n    <table>\n      <thead>\n        <tr>\n          <th>\u6c0f\u540d<\/th>\n          <th>\u5e74\u9f62<\/th>\n          <th>\u51fa\u8eab\u5730<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td class=&quot;name&quot;>\u9234\u6728\u4e00\u90ce<\/td>\n          <td class=&quot;age&quot;>30<\/td>\n          <td class=&quot;place&quot;>\u611b\u77e5\u770c<\/td>\n        <\/tr>\n        <tr>\n          <td class=&quot;name&quot;>\u5c71\u7530\u592a\u90ce<\/td>\n          <td class=&quot;age&quot;>32<\/td>\n          <td class=&quot;place&quot;>\u9759\u5ca1\u770c<\/td>\n        <\/tr>\n        <tr>\n          <td class=&quot;name&quot;>\u4f50\u3005\u6728\u4e09\u90ce<\/td>\n          <td class=&quot;age&quot;>24<\/td>\n          <td class=&quot;place&quot;>\u4e09\u91cd\u770c<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n    <script>\n      console.log(&quot;----- 1)for\u6587\u3067\u8981\u7d20\u3092\u53d6\u5f97 -----&quot;);\n      const nl_place = document.querySelectorAll(&quot;.place&quot;);\n      for (let i = 0; i < nl_place.length; i++) {\n        console.log(nl_place[i].textContent);\n      }\n\n      console.log(&quot;----- 2)forEach\u3067\u8981\u7d20\u3092\u53d6\u5f97 -----&quot;);\n      const nl_place2 = document.querySelectorAll(&quot;.place&quot;);\n      nl_place2.forEach((el_place) => {\n        console.log(el_place.textContent);\n      });\n\n      console.log(&quot;----- 3)forEach\u3067\u8981\u7d20\u3092\u53d6\u5f97\u3000\u203bquerySelectorAll\u306e\u7d50\u679c\u3092\u5909\u6570\u306b\u5165\u308c\u306a\u3044 -----&quot;);\n      document.querySelectorAll(&quot;.place&quot;).forEach((el_place) => {\n        console.log(el_place.textContent);\n      });\n    <\/script>\n  <\/body>\n<\/html>&#8221; style=&#8221;color:#D4D4D4;display:none&#8221; aria-label=&#8221;Copy&#8221; class=&#8221;code-block-pro-copy-button&#8221;><svg style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\" \/><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\" \/><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">&lt;!<\/span><span style=\"color: #4FC1FF\">DOCTYPE<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">html<\/span><span style=\"color: #D4D4D4\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">html<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">lang<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"ja\"<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">head<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">meta<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">charset<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"UTF-8\"<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #808080\">\/&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">meta<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">name<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"viewport\"<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">content<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"width=device-width, initial-scale=1.0\"<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #808080\">\/&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">title<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">forEach<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">title<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">head<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">body<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">table<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">thead<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">tr<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">th<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u6c0f\u540d<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">th<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">th<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u5e74\u9f62<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">th<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">th<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u51fa\u8eab\u5730<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">th<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">tr<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">thead<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">tbody<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">tr<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"name\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u9234\u6728\u4e00\u90ce<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"age\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">30<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"place\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u611b\u77e5\u770c<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">tr<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">tr<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"name\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u5c71\u7530\u592a\u90ce<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"age\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">32<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"place\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u9759\u5ca1\u770c<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">tr<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">tr<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"name\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u4f50\u3005\u6728\u4e09\u90ce<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"age\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">24<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">          <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">class<\/span><span style=\"color: #D4D4D4\">=<\/span><span style=\"color: #CE9178\">\"place\"<\/span><span style=\"color: #808080\">&gt;<\/span><span style=\"color: #D4D4D4\">\u4e09\u91cd\u770c<\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">td<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">tr<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">tbody<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">table<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      console.log(\"----- 1)for\u6587\u3067\u8981\u7d20\u3092\u53d6\u5f97 -----\");<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      const nl_place = document.querySelectorAll(\".place\");<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      for (let i = 0; i &lt; nl_place.length; i++) <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">nl_place<\/span><span style=\"color: #D4D4D4\">[<\/span><span style=\"color: #9CDCFE\">i<\/span><span style=\"color: #D4D4D4\">].<\/span><span style=\"color: #9CDCFE\">textContent<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #569CD6\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      console.log(\"----- 2)forEach\u3067\u8981\u7d20\u3092\u53d6\u5f97 -----\");<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      const nl_place2 = document.querySelectorAll(\".place\");<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      nl_place2.forEach((el_place) =&gt; <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">el_place<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #9CDCFE\">textContent<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #569CD6\">}<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      console.log(\"----- 3)forEach\u3067\u8981\u7d20\u3092\u53d6\u5f97\u3000\u203bquerySelectorAll\u306e\u7d50\u679c\u3092\u5909\u6570\u306b\u5165\u308c\u306a\u3044 -----\");<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      document.querySelectorAll(\".place\").forEach((el_place) =&gt; <\/span><span style=\"color: #569CD6\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #9CDCFE\">console<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">log<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">el_place<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #9CDCFE\">textContent<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">      <\/span><span style=\"color: #569CD6\">}<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">script<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">body<\/span><span style=\"color: #808080\">&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #808080\">&lt;\/<\/span><span style=\"color: #569CD6\">html<\/span><span style=\"color: #808080\">&gt;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u884c\u7d50\u679c\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-sango-with-border\"><img loading=\"lazy\" decoding=\"async\" width=\"615\" height=\"251\" src=\"http:\/\/160.251.208.217\/wp-content\/uploads\/2022\/06\/image-22.png\" alt=\"\" class=\"wp-image-1228\" srcset=\"https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-22.png 615w, https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/image-22-300x122.png 300w\" sizes=\"auto, (max-width: 615px) 100vw, 615px\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><br>\u3061\u306a\u307f\u306b\u3001\u8f9e\u66f8\u5f62\u5f0f\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u3057\u3066forEach\u3092\u4f7f\u3046\u5834\u5408\u306f\u3001\u3072\u3068\u624b\u9593\u5fc5\u8981\u3067\u3059\u3002<br>\u3088\u304b\u3063\u305f\u3089<a href=\"http:\/\/160.251.208.217\/js-foreach-json\/\" data-type=\"post\" data-id=\"1232\" target=\"_blank\" rel=\"noreferrer noopener\">\u3053\u3061\u3089\u306e\u8a18\u4e8b<\/a>\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\t\t\t<div class=\"c_linkto_wrap\">\n\t\t\t<a class=\"c_linkto\" href=\"https:\/\/it-dxblog.com\/blog\/js-foreach-json\/\" target=\"_blank\">\n\t\t\t\t<span class=\"c_linkto_img_wrap\"><img loading=\"lazy\" decoding=\"async\" width=\"520\" height=\"300\" src=\"https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/29caf6ae3a450673873f96049038b27c-520x300.png\" class=\"attachment-thumb-520 size-thumb-520 wp-post-image\" alt=\"\" srcset=\"https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/29caf6ae3a450673873f96049038b27c-520x300.png 520w, https:\/\/it-dxblog.com\/blog\/wp-content\/uploads\/2022\/06\/29caf6ae3a450673873f96049038b27c-300x172.png 300w\" sizes=\"auto, (max-width: 520px) 100vw, 520px\"><\/span>\n\t\t\t\t<div class=\"c_linkto_text\">\n\t\t\t\t\u3010JavaScript\u3011\u8f9e\u66f8\u5f62\u5f0f(\u9023\u60f3\u914d\u5217)\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306bforEach\u3092\u4f7f\u3046\u65b9\u6cd5\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t","protected":false},"excerpt":{"rendered":"<p>JavaScript\u306efor\u6587\u3068forEach\u306e\u6bd4\u8f03\u3092\u307e\u3068\u3081\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u4ed6\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u8a00\u8a9e\u3067for\u6587\u3092\u4f7f\u3048\u308b\u65b9\u3067\u3082\u3001JavaScript\u306eforEach\u306f\u3068\u3063\u3064\u304d\u306b\u304f\u3044\u306e\u3067\u3001\u5c11\u3057\u3067\u3082\u53c2\u8003\u306b\u306a\u3089\u3070\u5b09\u3057\u3044\u3067\u3059\u3002 forE &#8230; <\/p>\n","protected":false},"author":1,"featured_media":2084,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"categories":[8],"tags":[],"class_list":["post-1209","post","type-post","status-publish","format-standard","has-post-thumbnail","category-javascript","entry"],"_links":{"self":[{"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/posts\/1209","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/comments?post=1209"}],"version-history":[{"count":4,"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/posts\/1209\/revisions"}],"predecessor-version":[{"id":2726,"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/posts\/1209\/revisions\/2726"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/media\/2084"}],"wp:attachment":[{"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/media?parent=1209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/categories?post=1209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/it-dxblog.com\/blog\/wp-json\/wp\/v2\/tags?post=1209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}