{"id":166836,"date":"2024-05-08T15:45:41","date_gmt":"2024-05-08T07:45:41","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166836.html"},"modified":"2024-05-08T15:45:44","modified_gmt":"2024-05-08T07:45:44","slug":"javascript%e6%98%af%e5%b9%b2%e4%bb%80%e4%b9%88%e7%9a%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/166836.html","title":{"rendered":"javascript\u662f\u5e72\u4ec0\u4e48\u7684"},"content":{"rendered":"

\"javascript\u662f\u5e72\u4ec0\u4e48\u7684\"<\/p>\n

JavaScript<\/strong> \u662f\u4e00\u79cd\u9ad8\u7ea7\u3001\u89e3\u91ca\u578b\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u4e3b\u8981\u7528\u4e8e\u7f51\u9875\u548c\u5e94\u7528\u7a0b\u5e8f\u4e2d\u589e\u52a0\u4ea4\u4e92\u6027\u3001\u6539\u5584\u7528\u6237\u4f53\u9a8c\u548c\u5b9e\u73b0\u590d\u6742\u7684\u529f\u80fd\u3002\u4e0e\u6b64\u540c\u65f6\uff0c\u5b83\u4e5f\u80fd\u7528\u4e8e\u670d\u52a1\u5668\u7aef\u5f00\u53d1\u3001\u79fb\u52a8\u5e94\u7528\u5f00\u53d1\u3001\u6e38\u620f\u5f00\u53d1\u7b49\u591a\u79cd\u573a\u666f\u3002\u5b83\u7684\u6838\u5fc3\u529f\u80fd\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u64cd\u4f5c\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff08DOM\uff09\u3001\u54cd\u5e94\u7528\u6237\u4e8b\u4ef6\u3001\u6570\u636e\u9a8c\u8bc1\u53ca\u53d1\u9001\u5f02\u6b65\u8bf7\u6c42\uff08Ajax\uff09<\/strong>\u3002<\/p>\n<\/p>\n

JavaScript\u5728\u7f51\u9875\u4e2d\u7684\u5e94\u7528\u5c24\u5176\u5e7f\u6cdb\uff0c\u51e0\u4e4e\u6240\u6709\u73b0\u4ee3\u7f51\u9875\u90fd\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u4f7f\u7528\u4e86JavaScript\u6765\u589e\u5f3a\u9875\u9762\u7684\u52a8\u6001\u6548\u679c\u548c\u7528\u6237\u4ea4\u4e92\u6027\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u80fd\u66fe\u7ecf\u4f7f\u7528\u8fc7\u5728\u7ebf\u8868\u683c\u6216\u8005\u901a\u8fc7Ajax\u65e0\u9700\u5237\u65b0\u9875\u9762\u5373\u53ef\u66f4\u65b0\u5185\u5bb9\u7684\u529f\u80fd\uff0c\u8fd9\u4e9b\u90fd\u662fJavaScript\u6280\u672f\u7684\u4f53\u73b0\u3002<\/p>\n<\/p>\n

\u4e00\u3001JAVASCRIPT\u57fa\u7840<\/h3>\n<\/p>\n

JavaScript\u4f5c\u4e3a\u4e00\u95e8\u7f16\u7a0b\u8bed\u8a00\uff0c\u5b83\u57fa\u4e8eECMAScript\u6807\u51c6\uff0c\u5e76\u5e38\u89c1\u4e8e\u5ba2\u6237\u7aef\u73af\u5883\u4e2d\u88ab\u7528\u6765\u63a7\u5236\u7f51\u9875\u884c\u4e3a\u3002\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u5b9e\u73b0\u52a8\u6001\u5185\u5bb9\u66f4\u65b0\u3001\u63a7\u5236\u591a\u5a92\u4f53\u3001\u56fe\u7247\u52a8\u753b\u4ee5\u53ca\u4e0e\u7528\u6237\u4ea4\u4e92\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n

\u5b83\u7684\u57fa\u672c\u7279\u6027\u5305\u62ec\u52a8\u6001\u7c7b\u578b\u3001\u539f\u578b\u94fe\u7ee7\u627f\u4ee5\u53ca\u7c7b\u548c\u6a21\u5757\u7684\u6982\u5ff5<\/strong>\u3002\u867d\u7136JavaScript\u8d77\u521d\u53ea\u662f\u88ab\u8bbe\u8ba1\u6765\u5904\u7406\u524d\u7aef\u4efb\u52a1\uff0c\u968f\u7740Node.js\u7684\u51fa\u73b0\uff0c\u5b83\u73b0\u5728\u4e5f\u53ef\u4ee5\u5728\u670d\u52a1\u5668\u7aef\u4f7f\u7528\u3002JavaScript\u7684\u6570\u636e\u7c7b\u578b\u6709\u516d\u79cd\uff1aundefined\u3001null\u3001Boolean\u3001String\u3001Symbol\u3001Number\u548cObject\uff0c\u5f53\u4e2dObject\u662f\u590d\u5408\u6570\u636e\u7c7b\u578b\uff0c\u53ef\u4ee5\u5305\u542b\u65b9\u6cd5\u548c\u5c5e\u6027\u3002<\/p>\n<\/p>\n

\u4e8c\u3001DOM\u64cd\u4f5c<\/h3>\n<\/p>\n

\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff08DOM\uff09\u662f\u4e00\u4e2a\u8de8\u5e73\u53f0\u3001\u8bed\u8a00\u65e0\u5173\u7684\u63a5\u53e3\uff0c\u5b83\u5c06\u6587\u6863\u8868\u73b0\u4e3a\u4e00\u4e2a\u5e26\u6709\u5143\u7d20\u3001\u5c5e\u6027\u548c\u6587\u672c\u7684\u6811\u5f62\u7ed3\u6784\u3002\u5229\u7528JavaScript\uff0c\u53ef\u4ee5\u8bfb\u53d6\u3001\u6dfb\u52a0\u3001\u4fee\u6539\u6216\u5220\u9664DOM\u4e2d\u7684\u8282\u70b9<\/strong>\u3002\u8fd9\u610f\u5473\u7740\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u52a8\u6001\u5730\u6539\u53d8\u7f51\u9875\u7684\u7ed3\u6784\u3001\u6837\u5f0f\u548c\u5185\u5bb9\u3002<\/p>\n<\/p>\n

\u5bf9DOM\u7684\u64cd\u4f5c\u662f\u901a\u8fc7JavaScript\u4e2d\u7684DOM API\u6765\u5b9e\u73b0\u7684\u3002\u4f8b\u5982\uff0cdocument.getElementById<\/code>\u548cdocument.querySelector<\/code>\u7b49\u65b9\u6cd5\u5141\u8bb8\u5f00\u53d1\u8005\u9009\u53d6\u7279\u5b9a\u7684\u5143\u7d20\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7element.style<\/code>\u5c5e\u6027\u3001element.setAttribute<\/code>\u65b9\u6cd5\u7b49\u6765\u6539\u53d8\u5176\u6837\u5f0f\u6216\u5c5e\u6027\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u4e8b\u4ef6\u5904\u7406<\/h3>\n<\/p>\n

JavaScript\u80fd\u591f\u54cd\u5e94\u7528\u6237\u7684\u5404\u79cd\u4e8b\u4ef6\uff0c\u5982\u70b9\u51fb\u3001\u9f20\u6807\u79fb\u52a8\u3001\u952e\u76d8\u8f93\u5165\u7b49\u3002\u4e8b\u4ef6\u5904\u7406\u5668\u5141\u8bb8\u5f00\u53d1\u8005\u5b9a\u4e49\u5f53\u8fd9\u4e9b\u4e8b\u4ef6\u53d1\u751f\u65f6\u5e94\u6267\u884c\u7684\u4ee3\u7801\u3002\u4f7f\u7528JavaScript\u53ef\u4ee5\u6ce8\u518c\u4e8b\u4ef6\u76d1\u542c\u5668\u6765\u76d1\u89c6\u7279\u5b9a\u4e8b\u4ef6\uff0c\u5e76\u5728\u4e8b\u4ef6\u53d1\u751f\u65f6\u6267\u884c\u76f8\u5e94\u7684\u51fd\u6570\u6216\u65b9\u6cd5<\/strong>\u3002<\/p>\n<\/p>\n

\u4e8b\u4ef6\u76d1\u542c\u5668\u53ef\u4ee5\u76f4\u63a5\u7ed1\u5b9a\u5728DOM\u5143\u7d20\u4e0a\u3002\u4f8b\u5982\uff0celement.addEventListener('click', function() {...})<\/code> \u5c06\u5b9a\u4e49\u4e00\u4e2a\u5f53\u7528\u6237\u70b9\u51fb\u8be5\u5143\u7d20\u65f6\u89e6\u53d1\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u3002<\/p>\n<\/p>\n

\u56db\u3001\u8868\u5355\u9a8c\u8bc1<\/h3>\n<\/p>\n

\u5728Web\u5f00\u53d1\u4e2d\uff0c\u6570\u636e\u9a8c\u8bc1\u662f\u7ef4\u62a4\u6570\u636e\u8d28\u91cf\u7684\u5173\u952e\u6b65\u9aa4\uff0c\u800cJavaScript\u5e38\u7528\u4e8e\u5ba2\u6237\u7aef\u8868\u5355\u7684\u9a8c\u8bc1\u3002\u901a\u8fc7JavaScript\uff0c\u53ef\u4ee5\u5728\u6570\u636e\u88ab\u53d1\u9001\u5230\u670d\u52a1\u5668\u4e4b\u524d\u8fdb\u884c\u68c0\u67e5\uff0c\u786e\u4fdd\u7528\u6237\u8f93\u5165\u7684\u683c\u5f0f\u6b63\u786e\u3001\u7b26\u5408\u8981\u6c42<\/strong>\u3002<\/p>\n<\/p>\n

\u6bd4\u5982\uff0c\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u7535\u5b50\u90ae\u4ef6\u683c\u5f0f\u9a8c\u8bc1\u3001\u786e\u4fdd\u7528\u6237\u8f93\u5165\u4e86\u6240\u6709\u5fc5\u586b\u5b57\u6bb5\u4ee5\u53ca\u5728\u7528\u6237\u8f93\u5165\u8fc7\u7a0b\u4e2d\u5b9e\u65f6\u53cd\u9988\u9519\u8bef\u4fe1\u606f\u7b49\u529f\u80fd\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7JavaScript\u5b9e\u73b0\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u5f02\u6b65\u7f16\u7a0b\u4e0eAjax<\/h3>\n<\/p>\n

Ajax\u5168\u79f0\u4e3a\u201cAsynchronous JavaScript and XML\u201d\uff0c\u5b83\u5141\u8bb8\u6d4f\u89c8\u5668\u5728\u4e0d\u5237\u65b0\u9875\u9762\u7684\u60c5\u51b5\u4e0b\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u6570\u636e\u4ea4\u6362\u548c\u66f4\u65b0\u90e8\u5206\u7f51\u9875\u5185\u5bb9\u3002JavaScript\u7684\u5f02\u6b65\u7f16\u7a0b\u80fd\u529b\u8ba9\u9875\u9762\u80fd\u591f\u5728\u540e\u53f0\u8bf7\u6c42\u6570\u636e\u3001\u5904\u7406\u6570\u636e\u5e76\u66f4\u65b0\u754c\u9762\uff0c\u4ece\u800c\u63d0\u4f9b\u66f4\u6d41\u7545\u7684\u7528\u6237\u4f53\u9a8c<\/strong>\u3002<\/p>\n<\/p>\n

\u8fd0\u7528JavaScript\u7684XMLHttpRequest<\/code>\u5bf9\u8c61\u6216\u73b0\u4ee3\u7684fetch<\/code> API\u53ef\u4ee5\u5b9e\u73b0Ajax\u8c03\u7528\u3002\u8fd9\u4e9b\u6280\u672f\u652f\u6301Promise\u548casync\/awAI<\/a>t\u7b49\u73b0\u4ee3JavaScript\u7279\u6027\uff0c\u4f7f\u5f97\u5f02\u6b65\u7f16\u7a0b\u53d8\u5f97\u66f4\u52a0\u65b9\u4fbf\u548c\u5f3a\u5927\u3002<\/p>\n<\/p>\n

\u516d\u3001\u524d\u540e\u7aef\u5168\u6808\u5f00\u53d1<\/h3>\n<\/p>\n

\u501f\u52a9\u4e8eNode.js\uff0cJavaScript\u5df2\u7ecf\u7a81\u7834\u4e86\u4ec5\u7528\u4e8e\u5ba2\u6237\u7aef\u5f00\u53d1\u7684\u5c40\u9650\uff0c\u6210\u4e3a\u4e86\u4e00\u95e8\u5168\u6808\u5f00\u53d1\u8bed\u8a00\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u8bed\u8a00\u7f16\u5199\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u7684\u4ee3\u7801\uff0c\u8fd9\u964d\u4f4e\u4e86\u5b66\u4e60\u5f00\u53d1\u65b0\u6280\u672f\u7684\u95e8\u69db\u5e76\u63d0\u9ad8\u4e86\u5f00\u53d1\u6548\u7387<\/strong>\u3002<\/p>\n<\/p>\n

Node.js\u5e26\u6765\u7684NPM\uff08Node Package Manager\uff09\u662f\u4e16\u754c\u4e0a\u6700\u5927\u7684\u8f6f\u4ef6\u5e93\u4e4b\u4e00\uff0c\u5b83\u63d0\u4f9b\u4e86\u6d77\u91cf\u7684\u6a21\u5757\u548c\u5305\u6765\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u5feb\u901f\u5b9e\u73b0\u5404\u79cd\u529f\u80fd\u3002<\/p>\n<\/p>\n

\u6b64\u5916\uff0cJavaScript\u8fd8\u4e0e\u5404\u79cd\u73b0\u4ee3\u524d\u7aef\u6846\u67b6\uff08\u5982React\u3001Angular\u3001Vue.js\u7b49\uff09\u548c\u540e\u7aef\u6846\u67b6\uff08\u5982Express\u3001Koa\u3001NestJS\u7b49\uff09\u76f8\u7ed3\u5408\uff0c\u5f62\u6210\u4e86\u5f3a\u5927\u7684\u5f00\u53d1\u751f\u6001\uff0c\u4e0d\u65ad\u6269\u5c55\u7740\u5b83\u7684\u5e94\u7528\u8303\u56f4\u548c\u6df1\u5ea6\u3002<\/p>\n<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

1. JavaScript\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n

JavaScript\u662f\u4e00\u79cd\u7528\u4e8e\u7f51\u9875\u5f00\u53d1\u7684\u811a\u672c\u8bed\u8a00\uff0c\u5b83\u53ef\u4ee5\u5728\u7f51\u9875\u4e0a\u5b9e\u73b0\u4ea4\u4e92\u6027\u548c\u52a8\u6001\u6027\u3002\u901a\u8fc7JavaScript\uff0c\u60a8\u53ef\u4ee5\u5bf9\u7f51\u9875\u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u4f8b\u5982\u9a8c\u8bc1\u8868\u5355\u3001\u521b\u5efa\u52a8\u6001\u6548\u679c\u3001\u5904\u7406\u7528\u6237\u4ea4\u4e92\u7b49\u3002\u5b83\u80fd\u591f\u589e\u5f3a\u7528\u6237\u4f53\u9a8c\uff0c\u4e3a\u7f51\u9875\u6dfb\u52a0\u66f4\u591a\u7684\u529f\u80fd\u548c\u4e92\u52a8\u6027\u3002<\/p>\n

2. JavaScript\u5728\u7f51\u9875\u5f00\u53d1\u4e2d\u8d77\u5230\u4ec0\u4e48\u4f5c\u7528\uff1f<\/strong><\/p>\n

JavaScript\u5728\u7f51\u9875\u5f00\u53d1\u4e2d\u8d77\u5230\u975e\u5e38\u91cd\u8981\u7684\u4f5c\u7528\u3002\u5b83\u53ef\u4ee5\u4e0eHTML\u548cCSS\u4e00\u8d77\u4f7f\u7528\uff0c\u5b9e\u73b0\u7f51\u9875\u5185\u5bb9\u7684\u52a8\u6001\u52a0\u8f7d\u3001\u6570\u636e\u7684\u5b9e\u65f6\u66f4\u65b0\u548c\u7528\u6237\u4e0e\u7f51\u9875\u7684\u4ea4\u4e92\u3002\u901a\u8fc7JavaScript\uff0c\u60a8\u53ef\u4ee5\u64cd\u4f5c\u7f51\u9875\u5143\u7d20\u3001\u5904\u7406\u8868\u5355\u8f93\u5165\u3001\u8fdb\u884c\u6570\u636e\u9a8c\u8bc1\u3001\u6267\u884c\u52a8\u753b\u6548\u679c\u3001\u83b7\u53d6\u548c\u4fee\u6539\u7f51\u9875\u5185\u5bb9\u7b49\u3002\u5b83\u4f7f\u5f97\u7f51\u9875\u80fd\u591f\u66f4\u52a0\u7075\u6d3b\u3001\u4e30\u5bcc\u548c\u5177\u6709\u5438\u5f15\u529b\u3002<\/p>\n

3. JavaScript\u7684\u4e3b\u8981\u7279\u70b9\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n

JavaScript\u5177\u6709\u4ee5\u4e0b\u51e0\u4e2a\u4e3b\u8981\u7279\u70b9\uff1a<\/p>\n

    \n
  • \u5ba2\u6237\u7aef\u811a\u672c\u8bed\u8a00\uff1aJavaScript\u4e3b\u8981\u5728Web\u6d4f\u89c8\u5668\u4e2d\u6267\u884c\uff0c\u901a\u8fc7\u5d4c\u5165\u5728HTML\u4e2d\u7684\u6807\u7b7e\u6765\u5f15\u5165\u3002\u5b83\u8fd0\u884c\u5728\u7528\u6237\u7684\u8ba1\u7b97\u673a\u4e0a\uff0c\u4e0e\u670d\u52a1\u5668\u7aef\u65e0\u5173\uff0c\u56e0\u6b64\u53ef\u4ee5\u63d0\u4f9b\u66f4\u5feb\u7684\u54cd\u5e94\u901f\u5ea6\u548c\u66f4\u597d\u7684\u7528\u6237\u4f53\u9a8c\u3002<\/li>\n
  • \u5f31\u7c7b\u578b\u8bed\u8a00\uff1aJavaScript\u662f\u4e00\u79cd\u5f31\u7c7b\u578b\u8bed\u8a00\uff0c\u4e0d\u9700\u8981\u5728\u53d8\u91cf\u5b9a\u4e49\u65f6\u6307\u5b9a\u7c7b\u578b\u3002\u8fd9\u4f7f\u5f97\u5f00\u53d1\u66f4\u52a0\u7075\u6d3b\uff0c\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u6839\u636e\u9700\u8981\u66f4\u6539\u53d8\u91cf\u7684\u7c7b\u578b\u3002<\/li>\n
  • \u9762\u5411\u5bf9\u8c61\uff1aJavaScript\u662f\u4e00\u79cd\u57fa\u4e8e\u5bf9\u8c61\u7684\u8bed\u8a00\uff0c\u5b83\u652f\u6301\u9762\u5411\u5bf9\u8c61\u7684\u7f16\u7a0b\u98ce\u683c\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u5bf9\u8c61\u3001\u7c7b\u3001\u7ee7\u627f\u548c\u591a\u6001\u7b49\u6982\u5ff5\u6765\u6784\u5efa\u590d\u6742\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n
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