{"id":17440,"date":"2024-03-16T06:48:06","date_gmt":"2024-03-15T21:48:06","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%83%95%e3%82%a9%e3%83%bc%e3%83%a0%e3%82%92%e9%80%81%e4%bf%a1%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/"},"modified":"2025-08-06T11:52:54","modified_gmt":"2025-08-06T02:52:54","slug":"js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%83%95%e3%82%a9%e3%83%bc%e3%83%a0%e3%82%92%e9%80%81%e4%bf%a1%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%83%95%e3%82%a9%e3%83%bc%e3%83%a0%e3%82%92%e9%80%81%e4%bf%a1%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/","title":{"rendered":"JS\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>JavaScript\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a9\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u624b\u9806\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>document.getElementById()\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>document.querySelector()\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">var<\/span> form = <span class=\"hljs-variable language_\">document<\/span>.<span class=\"hljs-title function_\">getElementById<\/span>(<span class=\"hljs-string\">\"myForm\"<\/span>);\r\n<\/code><\/pre>\n<ol>\n<li>\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u3092\u8ffd\u52a0\u3059\u308b<\/li>\n<li>\u63d0\u51fa\u3059\u308b<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>form.<span class=\"hljs-title function_\">addEventListener<\/span>(<span class=\"hljs-string\">\"submit\"<\/span>, <span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">event<\/span>) {\r\n    event.<span class=\"hljs-title function_\">preventDefault<\/span>(); <span class=\"hljs-comment\">\/\/ \u963b\u6b62\u8868\u5355\u7684\u9ed8\u8ba4\u63d0\u4ea4\u884c\u4e3a<\/span>\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u5728\u8fd9\u91cc\u6267\u884c\u8868\u5355\u63d0\u4ea4\u7684\u903b\u8f91<\/span>\r\n});\r\n<\/code><\/pre>\n<ol>\n<li>\u8981\u7d20 (\u3088\u3046\u305d)<\/li>\n<li>\u540d\u524d<\/li>\n<li>\u4fa1\u5024 (\u304b\u3061)<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">var<\/span> formData = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FormData<\/span>(form);\r\n<span class=\"hljs-keyword\">var<\/span> data = {};\r\n\r\n<span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">var<\/span> pair <span class=\"hljs-keyword\">of<\/span> formData.<span class=\"hljs-title function_\">entries<\/span>()) {\r\n    data[pair[<span class=\"hljs-number\">0<\/span>]] = pair[<span class=\"hljs-number\">1<\/span>];\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>XMLHttpRequest\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\u3001\u300cXMLHttpRequest\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u53d6\u3063\u3066\u304f\u308b<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">var<\/span> xhr = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">XMLHttpRequest<\/span>();\r\nxhr.<span class=\"hljs-title function_\">open<\/span>(<span class=\"hljs-string\">\"POST\"<\/span>, <span class=\"hljs-string\">\"submit-url\"<\/span>, <span class=\"hljs-literal\">true<\/span>);\r\nxhr.<span class=\"hljs-title function_\">setRequestHeader<\/span>(<span class=\"hljs-string\">\"Content-Type\"<\/span>, <span class=\"hljs-string\">\"application\/json;charset=UTF-8\"<\/span>);\r\n\r\nxhr.<span class=\"hljs-property\">onreadystatechange<\/span> = <span class=\"hljs-keyword\">function<\/span>() {\r\n    <span class=\"hljs-keyword\">if<\/span> (xhr.<span class=\"hljs-property\">readyState<\/span> === <span class=\"hljs-title class_\">XMLHttpRequest<\/span>.<span class=\"hljs-property\">DONE<\/span> &amp;&amp; xhr.<span class=\"hljs-property\">status<\/span> === <span class=\"hljs-number\">200<\/span>) {\r\n        <span class=\"hljs-comment\">\/\/ \u8bf7\u6c42\u6210\u529f\u5904\u7406\u903b\u8f91<\/span>\r\n    }\r\n};\r\n\r\nxhr.<span class=\"hljs-title function_\">send<\/span>(<span class=\"hljs-title class_\">JSON<\/span>.<span class=\"hljs-title function_\">stringify<\/span>(data));\r\n<\/code><\/pre>\n<p>\u30b3\u30fc\u30c9\u306e\u5b8c\u5168\u306a\u4f8b\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">form<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"myForm\"<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">input<\/span> <span class=\"hljs-attr\">type<\/span>=<span class=\"hljs-string\">\"text\"<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"name\"<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"name\"<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">input<\/span> <span class=\"hljs-attr\">type<\/span>=<span class=\"hljs-string\">\"email\"<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"email\"<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"email\"<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">button<\/span> <span class=\"hljs-attr\">type<\/span>=<span class=\"hljs-string\">\"submit\"<\/span>&gt;<\/span>\u63d0\u4ea4<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">button<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">form<\/span>&gt;<\/span>\r\n\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span>&gt;<\/span><span class=\"language-javascript\">\r\n<span class=\"hljs-keyword\">var<\/span> form = <span class=\"hljs-variable language_\">document<\/span>.<span class=\"hljs-title function_\">getElementById<\/span>(<span class=\"hljs-string\">\"myForm\"<\/span>);\r\n\r\nform.<span class=\"hljs-title function_\">addEventListener<\/span>(<span class=\"hljs-string\">\"submit\"<\/span>, <span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">event<\/span>) {\r\n    event.<span class=\"hljs-title function_\">preventDefault<\/span>();\r\n\r\n    <span class=\"hljs-keyword\">var<\/span> formData = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FormData<\/span>(form);\r\n    <span class=\"hljs-keyword\">var<\/span> data = {};\r\n\r\n    <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">var<\/span> pair <span class=\"hljs-keyword\">of<\/span> formData.<span class=\"hljs-title function_\">entries<\/span>()) {\r\n        data[pair[<span class=\"hljs-number\">0<\/span>]] = pair[<span class=\"hljs-number\">1<\/span>];\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">var<\/span> xhr = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">XMLHttpRequest<\/span>();\r\n    xhr.<span class=\"hljs-title function_\">open<\/span>(<span class=\"hljs-string\">\"POST\"<\/span>, <span class=\"hljs-string\">\"submit-url\"<\/span>, <span class=\"hljs-literal\">true<\/span>);\r\n    xhr.<span class=\"hljs-title function_\">setRequestHeader<\/span>(<span class=\"hljs-string\">\"Content-Type\"<\/span>, <span class=\"hljs-string\">\"application\/json;charset=UTF-8\"<\/span>);\r\n\r\n    xhr.<span class=\"hljs-property\">onreadystatechange<\/span> = <span class=\"hljs-keyword\">function<\/span>() {\r\n        <span class=\"hljs-keyword\">if<\/span> (xhr.<span class=\"hljs-property\">readyState<\/span> === <span class=\"hljs-title class_\">XMLHttpRequest<\/span>.<span class=\"hljs-property\">DONE<\/span> &amp;&amp; xhr.<span class=\"hljs-property\">status<\/span> === <span class=\"hljs-number\">200<\/span>) {\r\n            <span class=\"hljs-comment\">\/\/ \u8bf7\u6c42\u6210\u529f\u5904\u7406\u903b\u8f91<\/span>\r\n        }\r\n    };\r\n\r\n    xhr.<span class=\"hljs-title function_\">send<\/span>(<span class=\"hljs-title class_\">JSON<\/span>.<span class=\"hljs-title function_\">stringify<\/span>(data));\r\n});\r\n<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a9\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u624b\u9806\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002 document.getElementById()\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002 document.querySelector()\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 var  [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-17440","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JS\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"JS\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/js\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" 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