{"id":854,"date":"2025-08-05T16:41:23","date_gmt":"2025-08-05T07:41:23","guid":{"rendered":"https:\/\/nexive.tech\/?p=854"},"modified":"2025-08-05T16:41:23","modified_gmt":"2025-08-05T07:41:23","slug":"%e3%80%90%e3%82%b5%e3%82%af%e3%83%83%e3%81%a8%e8%a7%a3%e8%aa%ac%e3%80%91javascript-if%e3%83%bbswitch%e3%81%ab%e3%82%88%e3%82%8b%e6%9d%a1%e4%bb%b6%e5%88%86%e5%b2%90%e3%81%ae%e5%9f%ba%e6%9c%ac%e3%81%a8","status":"publish","type":"post","link":"https:\/\/nexive.tech\/?p=854","title":{"rendered":"\u3010\u30b5\u30af\u30c3\u3068\u89e3\u8aac\u3011JavaScript if\u30fbswitch\u306b\u3088\u308b\u6761\u4ef6\u5206\u5c90\u306e\u57fa\u672c\u3068\u4f7f\u3044\u5206\u3051"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">1. \u672c\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JavaScript\u306b\u304a\u3051\u308b\u6761\u4ef6\u5206\u5c90\u306e\u57fa\u672c\u69cb\u6587\uff08if\u6587\u3001switch\u6587\uff09\u3092\u6bd4\u8f03\u89e3\u8aac<\/li>\n\n\n\n<li>\u5404\u69cb\u6587\u306e\u7528\u9014\u30fb\u66f8\u304d\u65b9\u30fb\u6319\u52d5\u306e\u9055\u3044\u3092\u5177\u4f53\u7684\u306b\u8aac\u660e<\/li>\n\n\n\n<li>\u5b9f\u52d9\u3067\u306e\u4f7f\u3044\u5206\u3051\u3084\u3088\u304f\u3042\u308b\u8aa4\u89e3\u30fb\u30df\u30b9\u3092\u9632\u3050\u30dd\u30a4\u30f3\u30c8\u3092\u6574\u7406<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. JavaScript\u306e\u6761\u4ef6\u5206\u5c90\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>JavaScript\u306e\u6761\u4ef6\u5206\u5c90\u306f\u3001\u3042\u308b\u6761\u4ef6\u306b\u5fdc\u3058\u3066\u7570\u306a\u308b\u51e6\u7406\u3092\u5b9f\u884c\u3055\u305b\u308b\u57fa\u672c\u7684\u306a\u5236\u5fa1\u69cb\u6587\u3067\u3059\u3002<br>\u4e3b\u306b\u4f7f\u7528\u3055\u308c\u308b\u306e\u306f\u300cif\u6587\u300d\u3068\u300cswitch\u6587\u300d\u3067\u3001\u6bd4\u8f03\u7684\u5358\u7d14\u306a\u5206\u5c90\u304b\u3089\u8907\u96d1\u306a\u591a\u6761\u4ef6\u51e6\u7406\u307e\u3067\u5e83\u304f\u5bfe\u5fdc\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>if\u6587\u306f\u67d4\u8edf\u6027\u304c\u9ad8\u304f\u3001\u6570\u5024\u30fb\u6587\u5b57\u5217\u30fb\u771f\u507d\u5024\u306a\u3069\u306e\u4efb\u610f\u306e\u6761\u4ef6\u5f0f\u3092\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002<br>switch\u6587\u306f\u3001\u7279\u5b9a\u306e\u5024\uff08\u591a\u304f\u306f\u5b9a\u6570\u3084\u5217\u6319\u5024\uff09\u306b\u5bfe\u3057\u3066\u8907\u6570\u306e\u9078\u629e\u80a2\u3092\u52b9\u7387\u7684\u306b\u5206\u5c90\u3055\u305b\u308b\u7528\u9014\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u52d9\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u306e\u5206\u5c90\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306e\u51e6\u7406\u3001\u8a2d\u5b9a\u5024\u306b\u3088\u308b\u5207\u308a\u66ff\u3048\u306a\u3069\u306b\u591a\u7528\u3055\u308c\u307e\u3059\u3002<br>\u4f7f\u3044\u5206\u3051\u3092\u8aa4\u308b\u3068\u53ef\u8aad\u6027\u3084\u4fdd\u5b88\u6027\u304c\u4e0b\u304c\u308b\u305f\u3081\u3001\u4e21\u8005\u306e\u7279\u6027\u3092\u6b63\u78ba\u306b\u628a\u63e1\u3057\u3066\u9078\u5b9a\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u8a73\u7d30\u89e3\u8aac<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6761\u4ef6\u304c1\u3064\u307e\u305f\u306f\u5c11\u6570\u306e\u3068\u304d\uff1aif\u6587\u306e\u57fa\u672c\u69cb\u6587<\/h3>\n\n\n\n<p>if\u6587\u306f\u3001\u6761\u4ef6\u5f0f\u304ctrue\u3068\u306a\u308b\u304b\u3069\u3046\u304b\u3067\u51e6\u7406\u3092\u5206\u5c90\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" 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-number-color:#D4D4D4;--cbp-line-number-width:calc(1 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#1e1e1e\"><span style=\"background:#c7c7c7;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#1e1e1e\">JavaScript<\/span><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>const value = 10;\n\nif (value > 5) {\n  console.log(\"5\u3088\u308a\u5927\u304d\u3044\u3067\u3059\");\n} else {\n  console.log(\"5\u4ee5\u4e0b\u3067\u3059\");\n}\n\n\/\/ \u51fa\u529b\uff1a\"5\u3088\u308a\u5927\u304d\u3044\u3067\u3059\"<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/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><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\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #569CD6\">const<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #4FC1FF\">value<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #B5CEA8\">10<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">value<\/span><span style=\"color: #D4D4D4\"> &gt; <\/span><span style=\"color: #B5CEA8\">5<\/span><span style=\"color: #D4D4D4\">) {<\/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: #CE9178\">&quot;5\u3088\u308a\u5927\u304d\u3044\u3067\u3059&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">} <\/span><span style=\"color: #C586C0\">else<\/span><span style=\"color: #D4D4D4\"> {<\/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: #CE9178\">&quot;5\u4ee5\u4e0b\u3067\u3059&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u51fa\u529b\uff1a&quot;5\u3088\u308a\u5927\u304d\u3044\u3067\u3059&quot;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>if\u6587\u306f\u3001else if \u3092\u4f7f\u3063\u3066\u8907\u6570\u6761\u4ef6\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" 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-number-color:#D4D4D4;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#1e1e1e\"><span style=\"background:#c7c7c7;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#1e1e1e\">JavaScript<\/span><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>const color = \"red\";\n\nif (color === \"blue\") {\n  console.log(\"\u9752\u3067\u3059\");\n} else if (color === \"red\") {\n  console.log(\"\u8d64\u3067\u3059\");\n} else {\n  console.log(\"\u305d\u306e\u4ed6\u306e\u8272\u3067\u3059\");\n}\n\n\/\/ \u51fa\u529b\uff1a\"\u8d64\u3067\u3059\"<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/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><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\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #569CD6\">const<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #4FC1FF\">color<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #CE9178\">&quot;red&quot;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">color<\/span><span style=\"color: #D4D4D4\"> === <\/span><span style=\"color: #CE9178\">&quot;blue&quot;<\/span><span style=\"color: #D4D4D4\">) {<\/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: #CE9178\">&quot;\u9752\u3067\u3059&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">} <\/span><span style=\"color: #C586C0\">else<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">color<\/span><span style=\"color: #D4D4D4\"> === <\/span><span style=\"color: #CE9178\">&quot;red&quot;<\/span><span style=\"color: #D4D4D4\">) {<\/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: #CE9178\">&quot;\u8d64\u3067\u3059&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">} <\/span><span style=\"color: #C586C0\">else<\/span><span style=\"color: #D4D4D4\"> {<\/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: #CE9178\">&quot;\u305d\u306e\u4ed6\u306e\u8272\u3067\u3059&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u51fa\u529b\uff1a&quot;\u8d64\u3067\u3059&quot;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u5024\u3054\u3068\u306b\u660e\u78ba\u306b\u5206\u5c90\u3057\u305f\u3044\u3068\u304d\uff1aswitch\u6587\u306e\u57fa\u672c\u69cb\u6587<\/h3>\n\n\n\n<p>switch\u6587\u306f\u30011\u3064\u306e\u5024\u306b\u5bfe\u3057\u3066\u8907\u6570\u306ecase\u3092\u7528\u3044\u3066\u6761\u4ef6\u5206\u5c90\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" 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-number-color:#D4D4D4;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#1e1e1e\"><span style=\"background:#c7c7c7;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#1e1e1e\">JavaScript<\/span><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>const status = \"loading\";\n\nswitch (status) {\n  case \"loading\":\n    console.log(\"\u8aad\u307f\u8fbc\u307f\u4e2d\");\n    break;\n  case \"success\":\n    console.log(\"\u6210\u529f\u3057\u307e\u3057\u305f\");\n    break;\n  case \"error\":\n    console.log(\"\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\");\n    break;\n  default:\n    console.log(\"\u4e0d\u660e\u306a\u72b6\u614b\u3067\u3059\");\n}\n\n\/\/ \u51fa\u529b\uff1a\"\u8aad\u307f\u8fbc\u307f\u4e2d\"<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/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><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\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #569CD6\">const<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #4FC1FF\">status<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #CE9178\">&quot;loading&quot;<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">switch<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #9CDCFE\">status<\/span><span style=\"color: #D4D4D4\">) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #C586C0\">case<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #CE9178\">&quot;loading&quot;<\/span><span style=\"color: #D4D4D4\">:<\/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: #CE9178\">&quot;\u8aad\u307f\u8fbc\u307f\u4e2d&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">break<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #C586C0\">case<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #CE9178\">&quot;success&quot;<\/span><span style=\"color: #D4D4D4\">:<\/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: #CE9178\">&quot;\u6210\u529f\u3057\u307e\u3057\u305f&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">break<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #C586C0\">case<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #CE9178\">&quot;error&quot;<\/span><span style=\"color: #D4D4D4\">:<\/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: #CE9178\">&quot;\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">break<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">  <\/span><span style=\"color: #C586C0\">default<\/span><span style=\"color: #D4D4D4\">:<\/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: #CE9178\">&quot;\u4e0d\u660e\u306a\u72b6\u614b\u3067\u3059&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ \u51fa\u529b\uff1a&quot;\u8aad\u307f\u8fbc\u307f\u4e2d&quot;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>switch\u306fbreak\u3092\u5fd8\u308c\u308b\u3068\u610f\u56f3\u305b\u305a\u6b21\u306ecase\u306b\u3082\u51e6\u7406\u304c\u6d41\u308c\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">if\u3068switch\u306e\u4f7f\u3044\u5206\u3051\u57fa\u6e96<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>if\u6587\u304c\u9069\u3059\u308b\u30b1\u30fc\u30b9<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6bd4\u8f03\u5f0f\uff08\u5927\u5c0f\u3001\u4e0d\u7b49\uff09\u3084\u7bc4\u56f2\u5224\u5b9a\u304c\u5fc5\u8981\u306a\u3068\u304d<\/li>\n\n\n\n<li>\u8907\u6570\u306e\u6761\u4ef6\u3092\u8ad6\u7406\u5f0f\u3067\u7d44\u307f\u5408\u308f\u305b\u305f\u3044\u3068\u304d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>switch\u6587\u304c\u9069\u3059\u308b\u30b1\u30fc\u30b9<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5024\u304c\u7279\u5b9a\u306e\u5b9a\u6570\u306b\u4e00\u81f4\u3059\u308b\u304b\u3092\u5224\u65ad\u3057\u305f\u3044\u3068\u304d<\/li>\n\n\n\n<li>case\u304c\u591a\u304f\u3001\u3059\u3079\u3066\u304c\u540c\u3058\u5909\u6570\u306e\u5024\u5224\u5b9a\u3067\u3042\u308b\u3068\u304d<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>switch\u306e\u65b9\u304c\u6761\u4ef6\u304c\u660e\u793a\u7684\u3067\u898b\u901a\u3057\u304c\u3088\u304f\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u304c\u3001if\u306e\u65b9\u304c\u67d4\u8edf\u6027\u306f\u9ad8\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u3088\u304f\u3042\u308b\u30df\u30b9\u30fb\u8aa4\u89e3\u30fb\u843d\u3068\u3057\u7a74<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>switch\u3067break\u3092\u66f8\u304d\u5fd8\u308c\u308b<\/strong>\u3068\u3001\u610f\u56f3\u305b\u305a\u6b21\u306ecase\u306b\u51e6\u7406\u304c\u7d9a\u304d\u307e\u3059\u3002<br>\u5bfe\u51e6\u306b\u306f\u3001\u5fc5\u305a\u5404case\u5185\u306bbreak\uff08\u307e\u305f\u306freturn\uff09\u3092\u5165\u308c\u308b\u306e\u304c\u57fa\u672c\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>if\u306e\u6761\u4ef6\u5f0f\u3067\u4ee3\u5165\uff08=\uff09\u3068\u6bd4\u8f03\uff08===\uff09\u3092\u6df7\u540c<\/strong>\u3059\u308b\u30df\u30b9\u304c\u983b\u51fa\u3057\u307e\u3059\u3002<br>\u6761\u4ef6\u5f0f\u306b <code>if (x = 1)<\/code> \u3068\u66f8\u304f\u3068\u3001\u5e38\u306b1\u306b\u4ee3\u5165\u3055\u308c\u3066true\u3068\u306a\u308a\u3001\u610f\u56f3\u3057\u306a\u3044\u6319\u52d5\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>switch\u3067\u8907\u96d1\u306a\u8ad6\u7406\u6761\u4ef6\u3092\u8a18\u8ff0\u3067\u304d\u306a\u3044<\/strong>\u305f\u3081\u3001\u5024\u6bd4\u8f03\u4ee5\u5916\u306e\u5206\u5c90\u306fif\u6587\u306b\u3059\u3079\u304d\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>default\u7bc0\u3092\u5fd8\u308c\u308b\u3068\u3001\u672a\u5b9a\u7fa9\u306e\u5165\u529b\u306b\u5bfe\u5fdc\u3067\u304d\u305a\u3001\u30d0\u30b0\u306e\u6e29\u5e8a<\/strong>\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u307e\u3068\u3081<\/h2>\n\n\n\n<p>JavaScript\u306e\u6761\u4ef6\u5206\u5c90\u3067\u306f\u3001if\u6587\u3068switch\u6587\u304c\u7528\u9014\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u3089\u308c\u307e\u3059\u3002<br>if\u306f\u67d4\u8edf\u306a\u6761\u4ef6\u306b\u3001switch\u306f\u7279\u5b9a\u306e\u5024\u5206\u5c90\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<br>\u69cb\u6587\u306e\u9055\u3044\u306b\u3088\u308b\u6319\u52d5\u3084\u8a2d\u8a08\u610f\u56f3\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u4fdd\u5b88\u6027\u3068\u53ef\u8aad\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u672c\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8 2. JavaScript\u306e\u6761\u4ef6\u5206\u5c90\u3068\u306f\uff1f JavaScript\u306e\u6761\u4ef6\u5206\u5c90\u306f\u3001\u3042\u308b\u6761\u4ef6\u306b\u5fdc\u3058\u3066\u7570\u306a\u308b\u51e6\u7406\u3092\u5b9f\u884c\u3055\u305b\u308b\u57fa\u672c\u7684\u306a\u5236\u5fa1\u69cb\u6587\u3067\u3059\u3002\u4e3b\u306b\u4f7f\u7528\u3055\u308c\u308b\u306e\u306f\u300cif\u6587\u300d\u3068\u300cswitch\u6587\u300d\u3067\u3001\u6bd4\u8f03\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":932,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[86],"tags":[],"class_list":["post-854","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript"],"_links":{"self":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts\/854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=854"}],"version-history":[{"count":2,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts\/854\/revisions"}],"predecessor-version":[{"id":933,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/posts\/854\/revisions\/933"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=\/wp\/v2\/media\/932"}],"wp:attachment":[{"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nexive.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}