{"id":312061,"date":"2024-05-20T22:29:39","date_gmt":"2024-05-20T14:29:39","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/312061.html"},"modified":"2024-05-20T22:29:49","modified_gmt":"2024-05-20T14:29:49","slug":"js-%e7%bc%96%e7%a8%8b%e9%a1%b9%e7%9b%ae%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e8%8e%b7%e5%8f%96-form-%e8%a1%a8%e5%8d%95%e6%95%b0%e6%8d%ae-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/312061.html","title":{"rendered":"js \u7f16\u7a0b\u9879\u76ee\u600e\u4e48\u5b9e\u73b0\u83b7\u53d6 form \u8868\u5355\u6570\u636e"},"content":{"rendered":"

\"js<\/p>\n

\u83b7\u53d6form\u8868\u5355\u6570\u636e\u662fJS\u7f16\u7a0b\u9879\u76ee\u4e2d\u7684\u5e38\u89c1\u9700\u6c42\uff0c\u53ef\u901a\u8fc7\u5982\u4e0b\u51e0\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff1a\u76d1\u542c\u63d0\u4ea4\u4e8b\u4ef6\u3001\u4f7f\u7528FormData\u5bf9\u8c61\u3001\u5229\u7528JavaScript\u76f4\u63a5\u8bbf\u95eeDOM\u5143\u7d20<\/strong>\u3002\u8fd9\u4e9b\u6280\u672f\u624b\u6bb5\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u6709\u6548\u5730\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u6570\u636e\uff0c\u5e76\u8fdb\u884c\u540e\u7eed\u5904\u7406\u3002\u5c24\u5176\u662f\u4f7f\u7528FormData\u5bf9\u8c61<\/strong>\u53ef\u4ee5\u6781\u5927\u7b80\u5316\u6570\u636e\u7684\u83b7\u53d6\u4e0e\u5904\u7406\u6d41\u7a0b\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u81ea\u52a8\u5c06\u8868\u5355\u6570\u636e\u7f16\u7801\u4e3a\u952e\u503c\u5bf9\u3002<\/p>\n<\/p>\n

\u4f7f\u7528FormData\u5bf9\u8c61<\/strong>\u65f6\uff0c\u9996\u5148\u8981\u786e\u4fdd\u8868\u5355\u5185\u7684\u6bcf\u4e2a\u8f93\u5165\u5143\u7d20\u90fd\u6709name<\/code>\u5c5e\u6027\uff0c\u56e0\u4e3aFormData\u662f\u57fa\u4e8ename<\/code>\u5c5e\u6027\u6536\u96c6\u503c\u7684\u3002\u7136\u540e\u53ef\u4ee5\u5728\u8868\u5355\u7684submit<\/code>\u4e8b\u4ef6\u76d1\u542c\u5668\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684FormData\u5b9e\u4f8b\uff0c\u5e76\u4f20\u5165\u5f53\u524d\u7684form<\/code>\u5143\u7d20\u3002\u901a\u8fc7\u8fd9\u4e2a\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u4f7f\u7528get<\/code>\u6216getAll<\/code>\u65b9\u6cd5\u6765\u83b7\u53d6\u5355\u4e2a\u6216\u591a\u4e2a\u5b57\u6bb5\u7684\u503c\uff0c\u4e5f\u53ef\u4ee5\u76f4\u63a5\u904d\u5386FormData\u5b9e\u4f8b\u6765\u64cd\u4f5c\u8868\u5355\u6570\u636e\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u76d1\u542c\u63d0\u4ea4\u4e8b\u4ef6<\/h3>\n<\/p>\n

\u8981\u83b7\u53d6\u8868\u5355\u6570\u636e\uff0c\u9996\u5148\u53ef\u4ee5\u7ed9\u8868\u5355\u7ed1\u5b9a\u4e00\u4e2asubmit<\/code>\u4e8b\u4ef6\u76d1\u542c\u5668\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5728\u7528\u6237\u5c1d\u8bd5\u63d0\u4ea4\u8868\u5355\u7684\u65f6\u5019\u6355\u83b7\u6570\u636e\u3002<\/p>\n<\/p>\n

document.getElementById('myForm').addEventListener('submit', function(event) {<\/p>\n
    event.preventDefault(); \/\/ \u9632\u6b62\u8868\u5355\u9ed8\u8ba4\u7684\u63d0\u4ea4\u884c\u4e3a<\/p>\n
    var username = document.getElementById('username').value;<\/p>\n
    var password = document.getElementById('password').value;<\/p>\n
    \/\/ \u5904\u7406\u83b7\u53d6\u5230\u7684\u6570\u636e<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4e0a\u8ff0\u4ee3\u7801\uff0c\u53ef\u4ee5\u5728\u7528\u6237\u63d0\u4ea4\u8868\u5355\u65f6\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\uff0c\u5e76\u4e14\u901a\u8fc7\u8bbf\u95ee\u6bcf\u4e2a\u8f93\u5165\u5b57\u6bb5\uff08input\uff09\u7684value<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u6570\u636e\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528FormData\u5bf9\u8c61<\/h3>\n<\/p>\n
FormData<\/strong>\u662f\u4e00\u4e2a\u7528\u4e8e\u5c01\u88c5\u8868\u5355\u6570\u636e\u7684\u5bf9\u8c61\uff0c\u53ef\u4ee5\u914d\u5408XMLHttpRequest<\/code>\u6216fetch<\/code>\u529f\u80fd\u4e00\u8d77\u4f7f\u7528\uff0c\u6765\u5f02\u6b65\u63d0\u4ea4\u8868\u5355\u3002<\/p>\n<\/p>\n
document.getElementById('myForm').addEventListener('submit', function(event) {<\/p>\n
    event.preventDefault();<\/p>\n
    var formData = new FormData(this); \/\/ 'this' refers to the form element<\/p>\n
    var object = {};<\/p>\n
    formData.forEach(function(value, key){<\/p>\n
        object[key] = value;<\/p>\n
    });<\/p>\n
    \/\/ \u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3aJSON\u5b57\u7b26\u4e32<\/p>\n
    var json = JSON.stringify(object);<\/p>\n
    \/\/ \u4f7f\u7528fetch\u6216\u5176\u4ed6AJAX\u65b9\u6cd5\u53d1\u9001JSON\u6570\u636e<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4f7f\u7528FormData<\/strong>\u53ef\u4ee5\u975e\u5e38\u4fbf\u6377\u5730\u6536\u96c6\u548c\u5904\u7406\u8868\u5355\u6570\u636e\uff0c\u4e0d\u9700\u8981\u624b\u52a8\u7ec4\u88c5\u6570\u636e\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5229\u7528JavaScript\u76f4\u63a5\u8bbf\u95eeDOM\u5143\u7d20<\/h3>\n<\/p>\n
\u53e6\u4e00\u79cd\u65b9\u5f0f\u662f\u76f4\u63a5\u901a\u8fc7DOM API\u8bbf\u95ee\u8f93\u5165\u5143\u7d20\u5e76\u83b7\u53d6\u5176\u503c\u3002\u8fd9\u9002\u7528\u4e8e\u8f83\u7b80\u5355\u7684\u573a\u666f\uff0c\u4e0d\u9700\u8981\u4f7f\u7528\u8868\u5355\u7684\u63d0\u4ea4\u4e8b\u4ef6\u3002<\/p>\n<\/p>\n
var username = document.getElementById('username').value;<\/p>\n
var password = document.getElementById('password').value;<\/p>\n
\/\/ \u4f7f\u7528\u83b7\u53d6\u5230\u7684username\u548cpassword<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u505a\u6cd5\u7b80\u5355\u4e14\u76f4\u63a5\uff0c\u4f46\u4e0d\u9002\u7528\u4e8e\u5305\u542b\u5927\u91cf\u6570\u636e\u5b57\u6bb5\u7684\u590d\u6742\u8868\u5355\u3002<\/p>\n<\/p>\n
\u603b\u7684\u6765\u8bf4\uff0c\u83b7\u53d6\u8868\u5355\u6570\u636e\u662f\u524d\u7aef\u5f00\u53d1\u4e2d\u7684\u4e00\u9879\u57fa\u7840\u800c\u5173\u952e\u7684\u6280\u80fd\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u9879\u76ee\u7684\u5177\u4f53\u9700\u6c42\u548c\u60c5\u51b5\uff0c\u9009\u62e9\u6700\u9002\u5408\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u3002\u5728\u5b9e\u9645\u7684\u5e94\u7528\u8fc7\u7a0b\u4e2d\uff0c\u8003\u8651\u5230\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\uff0c\u63a8\u8350\u4f7f\u7528FormData\u5bf9\u8c61<\/strong>\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u9ad8\u7ea7\u3001\u7b80\u6d01\u7684\u65b9\u5f0f\u6765\u5904\u7406\u8868\u5355\u6570\u636e\u3002\u6b64\u5916\uff0c\u4e3a\u4e86\u786e\u4fdd\u6570\u636e\u5904\u7406\u7684\u5b89\u5168\u6027\uff0c\u8bb0\u5f97\u5728\u5904\u7406\u8868\u5355\u6570\u636e\u4e4b\u524d\u8fdb\u884c\u9002\u5f53\u7684\u9a8c\u8bc1\u548c\u6e05\u7406\u64cd\u4f5c\uff0c\u907f\u514d\u5b89\u5168\u6f0f\u6d1e\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u5982\u4f55\u901a\u8fc7JavaScript\u7f16\u7a0b\u9879\u76ee\u83b7\u53d6\u8868\u5355\u6570\u636e\uff1f<\/strong><\/p>\n
JavaScript\u7f16\u7a0b\u9879\u76ee\u4e2d\u83b7\u53d6\u8868\u5355\u6570\u636e\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\u5b9e\u73b0\uff1a<\/p>\n
    \n
  • \u9996\u5148\uff0c\u4f7f\u7528document.querySelector<\/code>\u6216document.getElementById<\/code>\u7b49\u65b9\u6cd5\u83b7\u53d6\u8868\u5355\u5143\u7d20\u8282\u70b9\uff1b<\/li>\n
  • \u5176\u6b21\uff0c\u4f7f\u7528addEventListener<\/code>\u65b9\u6cd5\u4e3a\u8868\u5355\u5143\u7d20\u6dfb\u52a0\u63d0\u4ea4\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u4ee5\u4fbf\u5728\u7528\u6237\u63d0\u4ea4\u8868\u5355\u65f6\u89e6\u53d1\u76f8\u5e94\u7684\u51fd\u6570\uff1b<\/li>\n
  • \u5728\u63d0\u4ea4\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u4e2d\uff0c\u901a\u8fc7\u8868\u5355\u5143\u7d20\u7684elements<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u8868\u5355\u63a7\u4ef6\u96c6\u5408\uff1b<\/li>\n
  • \u904d\u5386\u8868\u5355\u63a7\u4ef6\u96c6\u5408\uff0c\u4f7f\u7528name<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u6bcf\u4e2a\u8868\u5355\u63a7\u4ef6\u7684\u540d\u79f0\uff0c\u7136\u540e\u901a\u8fc7\u76f8\u5e94\u7684\u8868\u5355\u63a7\u4ef6\u7c7b\u578b\u6765\u83b7\u53d6\u5bf9\u5e94\u7684\u503c\u3002<\/li>\n<\/ul>\n
    \u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\u6765\u83b7\u53d6\u8868\u5355\u4e2d\u6587\u672c\u6846\u548c\u5355\u9009\u6846\u7684\u6570\u636e\uff1a<\/p>\n
    const form = document.querySelector('form');\n\nform.addEventListener('submit', function(event) {\n  event.preventDefault(); \/\/ \u963b\u6b62\u9ed8\u8ba4\u63d0\u4ea4\u884c\u4e3a\n  const inputs = form.elements;\n  \n  for (let i = 0; i < inputs.length; i++) {\n    const input = inputs[i];\n    if (input.type === 'text' || input.type === 'radio') {\n      console.log(input.name, input.value);\n    }\n  }\n});\n<\/code><\/pre>\n
    2. \u83b7\u53d6\u8868\u5355\u6570\u636e\u540e\uff0c\u5982\u4f55\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u6216\u63d0\u4ea4\u5230\u670d\u52a1\u5668\uff1f<\/strong><\/p>\n
    \u83b7\u53d6\u8868\u5355\u6570\u636e\u540e\uff0c\u53ef\u4ee5\u6839\u636e\u4f60\u7684\u9700\u6c42\u8fdb\u884c\u5904\u7406\u6216\u63d0\u4ea4\u5230\u670d\u52a1\u5668\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5904\u7406\u65b9\u5f0f\u7684\u793a\u4f8b\uff1a<\/p>\n
      \n
    • \u53ef\u4ee5\u5c06\u8868\u5355\u6570\u636e\u5b58\u50a8\u5230\u4e00\u4e2aJavaScript\u5bf9\u8c61\u4e2d\uff0c\u7136\u540e\u901a\u8fc7\u5176\u4ed6\u51fd\u6570\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u3001\u9a8c\u8bc1\u6216\u5904\u7406\u5176\u4ed6\u4e1a\u52a1\u903b\u8f91\uff1b<\/li>\n
    • \u5982\u679c\u9700\u8981\u5c06\u8868\u5355\u6570\u636e\u63d0\u4ea4\u5230\u670d\u52a1\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528XMLHttpRequest<\/code>\u5bf9\u8c61\u6216fetch<\/code>\u51fd\u6570\u6765\u53d1\u9001POST\u8bf7\u6c42\uff0c\u5e76\u5c06\u8868\u5355\u6570\u636e\u4f5c\u4e3a\u8bf7\u6c42\u7684\u6b63\u6587\u53d1\u9001\u5230\u670d\u52a1\u5668\uff1b<\/li>\n
    • \u53ef\u4ee5\u5728\u4f7f\u7528\u8868\u5355\u6570\u636e\u524d\u5bf9\u5176\u8fdb\u884c\u9a8c\u8bc1\uff0c\u4f8b\u5982\u68c0\u67e5\u8f93\u5165\u7684\u6709\u6548\u6027\u3001\u683c\u5f0f\u662f\u5426\u6b63\u786e\u7b49\uff1b<\/li>\n
    • \u5982\u679c\u9700\u8981\u5bf9\u5904\u7406\u7ed3\u679c\u8fdb\u884c\u53cd\u9988\uff0c\u53ef\u4ee5\u5c06\u5904\u7406\u7ed3\u679c\u663e\u793a\u5728\u9875\u9762\u4e2d\u6216\u8005\u901a\u8fc7\u5f39\u7a97\u7b49\u5f62\u5f0f\u8fdb\u884c\u63d0\u793a\u3002<\/li>\n<\/ul>\n
      \u6839\u636e\u5177\u4f53\u7684\u9879\u76ee\u9700\u6c42\uff0c\u4f60\u53ef\u4ee5\u9009\u62e9\u9002\u5408\u7684\u5904\u7406\u65b9\u5f0f\u3002<\/p>\n
      3. \u9664\u4e86\u4f7f\u7528JavaScript\u4e4b\u5916\uff0c\u662f\u5426\u8fd8\u6709\u5176\u4ed6\u65b9\u5f0f\u53ef\u4ee5\u83b7\u53d6\u8868\u5355\u6570\u636e\uff1f<\/strong><\/p>\n
      \u9664\u4e86\u4f7f\u7528JavaScript\u6765\u83b7\u53d6\u8868\u5355\u6570\u636e\u4e4b\u5916\uff0c\u8fd8\u6709\u591a\u79cd\u5176\u4ed6\u65b9\u5f0f\u53ef\u4ee5\u5b9e\u73b0\uff1a<\/p>\n
        \n
      • \u4f7f\u7528\u670d\u52a1\u5668\u7aef\u811a\u672c\u8bed\u8a00\uff08\u5982PHP\u3001Python\u7b49\uff09\u6765\u5904\u7406\u8868\u5355\u63d0\u4ea4\uff0c\u901a\u8fc7\u8868\u5355\u7684name<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u8868\u5355\u6570\u636e\uff1b<\/li>\n
      • \u4f7f\u7528\u524d\u7aef\u6846\u67b6\uff08\u5982React\u3001Angular\u3001Vue\u7b49\uff09\u6765\u5904\u7406\u8868\u5355\uff0c\u8fd9\u4e9b\u6846\u67b6\u63d0\u4f9b\u4e86\u66f4\u65b9\u4fbf\u7684\u8868\u5355\u7ed1\u5b9a\u548c\u6570\u636e\u5904\u7406\u673a\u5236\uff1b<\/li>\n
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