{"id":164291,"date":"2024-05-08T14:51:20","date_gmt":"2024-05-08T06:51:20","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/164291.html"},"modified":"2024-05-08T14:51:26","modified_gmt":"2024-05-08T06:51:26","slug":"web-%e7%a7%bb%e5%8a%a8%e7%ab%af%e5%bc%80%e5%8f%91%e4%b8%ad-javascript-%e4%bb%a3%e7%a0%81%e6%89%a7%e8%a1%8c%e9%a1%ba%e5%ba%8f%e6%98%af%e5%a6%82%e4%bd%95%e8%ae%be%e8%ae%a1%e7%9a%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/164291.html","title":{"rendered":"web \u79fb\u52a8\u7aef\u5f00\u53d1\u4e2d JavaScript \u4ee3\u7801\u6267\u884c\u987a\u5e8f\u662f\u5982\u4f55\u8bbe\u8ba1\u7684"},"content":{"rendered":"

\"web<\/p>\n

Web\u79fb\u52a8\u5f00\u53d1\u4e2d\uff0cJavaScript\u4ee3\u7801\u6267\u884c\u987a\u5e8f\u7684\u8bbe\u8ba1\u9075\u5faa\u4e8b\u4ef6\u5faa\u73af\u673a\u5236\uff0c\u5f02\u6b65\u7f16\u7a0b\u6a21\u5f0f\u3001\u548c\u4f9d\u8d56\u7ba1\u7406\u7b56\u7565\u3002<\/strong> \u4ee3\u7801\u6267\u884c\u987a\u5e8f\u9700\u8981\u786e\u4fdd\u540c\u6b65\u4efb\u52a1\u7684\u76f4\u63a5\u6267\u884c\u3001\u5f02\u6b65\u64cd\u4f5c\u7684\u6709\u5e8f\u6392\u961f\uff0c\u5e76\u5728\u9002\u5f53\u7684\u65f6\u673a\u56de\u5230\u4e8b\u4ef6\u5faa\u73af\u4e2d\u6267\u884c\u56de\u8c03\u3002\u5728\u7ec6\u8282\u4e0a\uff0c\u8fd9\u6d89\u53ca\u5230\u8c03\u7528\u6808\u3001\u4efb\u52a1\u961f\u5217\u3001\u5fae\u4efb\u52a1\u961f\u5217\u4ee5\u53ca\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u534f\u540c\u5de5\u4f5c\u3002\u5176\u4e2d\u4e8b\u4ef6\u5faa\u73af\u673a\u5236<\/strong>\u662f\u6838\u5fc3\uff0c\u5b83\u8d1f\u8d23\u76d1\u89c6\u8c03\u7528\u6808\u548c\u6d88\u606f\u961f\u5217\uff0c\u786e\u4fdd\u5728\u4e3b\u7ebf\u7a0b\u7a7a\u95f2\u65f6\u6309\u987a\u5e8f\u6267\u884c\u6d88\u606f\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u540c\u6b65\u4e0e\u5f02\u6b65\u7f16\u7a0b\u6982\u5ff5<\/h3>\n<\/p>\n

\u5728\u6df1\u5165\u4e86\u89e3JavaScript\u4ee3\u7801\u6267\u884c\u987a\u5e8f\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u5f04\u6e05\u695a\u540c\u6b65\u4e0e\u5f02\u6b65\u7f16\u7a0b\u7684\u57fa\u672c\u6982\u5ff5\u3002\u540c\u6b65\u64cd\u4f5c<\/strong>\u662f\u6307\u4ee3\u7801\u6309\u7167\u4e66\u5199\u7684\u987a\u5e8f\u4f9d\u6b21\u6267\u884c\uff0c\u540e\u4e00\u884c\u4ee3\u7801\u5fc5\u987b\u7b49\u524d\u4e00\u884c\u4ee3\u7801\u6267\u884c\u5b8c\u6bd5\u540e\u624d\u80fd\u8fdb\u884c\u3002\u800c\u5f02\u6b65\u64cd\u4f5c<\/strong>\u5219\u5141\u8bb8\u4ee3\u7801\u5728\u7b49\u5f85\u4e00\u4e2a\u4efb\u52a1\u5b8c\u6210\u7684\u540c\u65f6\u7ee7\u7eed\u6267\u884c\u5176\u4ed6\u4efb\u52a1\uff0c\u4e0d\u4f1a\u963b\u585e\u540e\u7eed\u4ee3\u7801\u7684\u6267\u884c\u3002<\/p>\n<\/p>\n

1. \u540c\u6b65\u6267\u884c\u7684\u6d41\u7a0b<\/h4>\n<\/p>\n

\u5bf9\u4e8e\u540c\u6b65\u4ee3\u7801\uff0cJavaScript\u89e3\u91ca\u5668\u4f1a\u6309\u7167\u4ece\u4e0a\u81f3\u4e0b\u7684\u987a\u5e8f\u4e00\u6761\u4e00\u6761\u6267\u884c\u4ee3\u7801\uff0c\u5f62\u6210\u4e00\u4e2a\u88ab\u79f0\u4e3a\u6267\u884c\u4e0a\u4e0b\u6587\u7684\u73af\u5883\u3002\u6bcf\u5f53\u4e00\u4e2a\u51fd\u6570\u88ab\u8c03\u7528\u65f6\uff0c\u4e00\u4e2a\u65b0\u7684\u6267\u884c\u4e0a\u4e0b\u6587\u5c31\u88ab\u521b\u5efa\u5e76\u538b\u5165\u8c03\u7528\u6808\u4e2d\uff0c\u7b49\u5230\u51fd\u6570\u6267\u884c\u5b8c\u6bd5\u540e\uff0c\u8be5\u6267\u884c\u4e0a\u4e0b\u6587\u88ab\u79fb\u9664\u3002<\/p>\n<\/p>\n

2. \u5f02\u6b65\u6267\u884c\u7684\u6a21\u5f0f<\/h4>\n<\/p>\n

\u5f02\u6b65\u7f16\u7a0b\u6a21\u5f0f\u901a\u8fc7\u56de\u8c03\u51fd\u6570\u3001Promise\u3001async\/awAI<\/a>t\u6765\u7ba1\u7406\u3002\u8fd9\u4e9b\u6a21\u5f0f\u4f7f\u5f97JavaScript\u80fd\u591f\u53d1\u9001\u7f51\u7edc\u8bf7\u6c42\u3001\u8bbe\u7f6e\u65f6\u95f4\u5ef6\u8fdf\u7b49\uff0c\u800c\u4e0d\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002\u5bf9\u8fd9\u4e9b\u64cd\u4f5c\u7684\u54cd\u5e94\uff0c\u901a\u5e38\u4f1a\u88ab\u8bbe\u7f6e\u4e3a\u5728\u672a\u6765\u7684\u67d0\u4e2a\u65f6\u95f4\u70b9\u4e0a\uff0c\u88ab\u63a8\u5165\u4efb\u52a1\u961f\u5217\u4e2d\u7b49\u5f85\u6267\u884c\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u4e8b\u4ef6\u5faa\u73af\u4e0e\u4efb\u52a1\u961f\u5217<\/h3>\n<\/p>\n

\u4e8b\u4ef6\u5faa\u73af\u662fJavaScript\u5f02\u6b65\u7f16\u7a0b\u7684\u6838\u5fc3\uff0c\u5176\u673a\u5236\u4fdd\u8bc1\u4e86\u5373\u4f7fJavaScript\u662f\u5355\u7ebf\u7a0b\u8bed\u8a00\uff0c\u4e5f\u80fd\u591f\u6267\u884c\u5f02\u6b65\u4ee3\u7801\u3002\u4e8b\u4ef6\u5faa\u73af\u8d1f\u8d23\u76d1\u63a7\u8c03\u7528\u6808\u548c\u4efb\u52a1\u961f\u5217\u3002\u5982\u679c\u8c03\u7528\u6808\u4e3a\u7a7a\uff0c\u4e8b\u4ef6\u5faa\u73af\u5c31\u4f1a\u4ece\u4efb\u52a1\u961f\u5217\u4e2d\u53d6\u51fa\u4efb\u52a1\u6765\u6267\u884c\u3002<\/p>\n<\/p>\n

1. \u8c03\u7528\u6808\uff08Call Stack\uff09<\/h4>\n<\/p>\n

\u8c03\u7528\u6808\u662f\u4e00\u4e2a\u540e\u8fdb\u5148\u51fa\uff08LIFO\uff09\u7684\u6808\u7ed3\u6784\uff0c\u5b83\u8bb0\u5f55\u4e86\u5f53\u524d\u6267\u884c\u73af\u5883\u7684\u51fd\u6570\u8c03\u7528\u3002\u5f53\u51fd\u6570\u6267\u884c\u7ed3\u675f\uff0c\u5b83\u4f1a\u88ab\u4ece\u8c03\u7528\u6808\u4e2d\u5f39\u51fa\uff0c\u63a7\u5236\u6743\u56de\u5230\u6808\u4e2d\u4e0b\u4e00\u6761\u6307\u4ee4\u3002<\/p>\n<\/p>\n

2. \u4efb\u52a1\u961f\u5217\uff08Task Queue\uff09<\/h4>\n<\/p>\n

\u4e5f\u79f0\u4e3a\u6d88\u606f\u961f\u5217\uff0c\u662f\u4e00\u4e2a\u5148\u8fdb\u5148\u51fa\uff08FIFO\uff09\u7684\u961f\u5217\u7ed3\u6784\uff0c\u5b83\u5b58\u653e\u7740\u7531\u5f02\u6b65\u64cd\u4f5c\u5f15\u8d77\u7684\u56de\u8c03\u4e8b\u4ef6\u3002\u5f53\u4e8b\u4ef6\u5faa\u73af\u53d1\u73b0\u8c03\u7528\u6808\u662f\u7a7a\u7684\uff0c\u5b83\u5c31\u4f1a\u53d6\u4efb\u52a1\u961f\u5217\u4e2d\u7684\u7b2c\u4e00\u4e2a\u4efb\u52a1\u6267\u884c\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u5fae\u4efb\u52a1\u4e0e\u5b8f\u4efb\u52a1<\/h3>\n<\/p>\n

JavaScript\u4e2d\u7684\u5f02\u6b65\u4efb\u52a1\u53ef\u4ee5\u7ec6\u5206\u4e3a\u5fae\u4efb\u52a1\uff08Microtasks\uff09\u548c\u5b8f\u4efb\u52a1\uff08Macrotasks\uff09\u3002\u5b83\u4eec\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u6267\u884c\u7684\u65f6\u673a\u4e0d\u540c\u3002\u5b8f\u4efb\u52a1<\/strong>\u5305\u62ec\uff1asetTimeout\u3001setInterval\u3001I\/O\u3001UI\u6e32\u67d3\u7b49\u3002\u5fae\u4efb\u52a1<\/strong>\u5305\u62ec\uff1aPromise.then\u3001MutationObserver\u7b49\uff0c\u5e76\u4e14\u4f1a\u5728\u5f53\u524d\u5b8f\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\u540e\uff0c\u4e0b\u4e00\u4e2a\u5b8f\u4efb\u52a1\u6267\u884c\u524d\u7684\u5fae\u4efb\u52a1\u68c0\u67e5\u70b9\u6267\u884c\u3002<\/p>\n<\/p>\n

1. \u5fae\u4efb\u52a1\u7684\u5904\u7406\u8fc7\u7a0b<\/h4>\n<\/p>\n

\u5728\u6bcf\u4e00\u4e2a\u5b8f\u4efb\u52a1\u6267\u884c\u7ed3\u675f\u540e\uff0c\u5f15\u64ce\u4f1a\u5904\u7406\u6240\u6709\u7684\u5fae\u4efb\u52a1\u961f\u5217\uff0c\u76f4\u5230\u961f\u5217\u6e05\u7a7a\u3002\u8fd9\u610f\u5473\u7740\u5fae\u4efb\u52a1\u603b\u662f\u5728\u5f53\u524d\u5b8f\u4efb\u52a1\u7ed3\u675f\u540e\uff0c\u4e0b\u4e00\u4e2a\u5b8f\u4efb\u52a1\u5f00\u59cb\u4e4b\u524d\u6267\u884c\u3002<\/p>\n<\/p>\n

2. \u5b8f\u4efb\u52a1\u7684\u8c03\u5ea6\u65b9\u5f0f<\/h4>\n<\/p>\n

\u6bcf\u6b21\u4e8b\u4ef6\u5faa\u73aftick\uff0c\u5b8f\u4efb\u52a1\u961f\u5217\u4e2d\u7684\u4e00\u4e2a\u4efb\u52a1\u88ab\u6267\u884c\uff0c\u4e00\u65e6\u6267\u884c\u5b8c\u5f53\u524d\u5b8f\u4efb\u52a1\u53ca\u5176\u751f\u6210\u7684\u5fae\u4efb\u52a1\uff0c\u6e32\u67d3\u754c\u9762\uff0c\u7136\u540e\u624d\u4f1a\u6267\u884c\u4e0b\u4e00\u4e2a\u5b8f\u4efb\u52a1\u3002<\/p>\n<\/p>\n

\u56db\u3001\u4e8b\u4ef6\u76d1\u542c\u4e0e\u5904\u7406<\/h3>\n<\/p>\n

\u4e8b\u4ef6\u76d1\u542c\u5668\u662f\u79fb\u52a8\u7aef\u5f00\u53d1\u4e2d\u5e38\u7528\u6765\u5904\u7406\u7528\u6237\u4ea4\u4e92\u7684\u673a\u5236\u3002\u5b83\u4eec\u53ef\u4ee5\u88ab\u6dfb\u52a0\u5230DOM\u5143\u7d20\u4e0a\uff0c\u5f53\u7279\u5b9a\u4e8b\u4ef6\u53d1\u751f\u65f6\u6267\u884c\u56de\u8c03\u3002JavaScript\u901a\u8fc7\u4e8b\u4ef6\u5192\u6ce1\u548c\u6355\u83b7\u4e24\u4e2a\u9636\u6bb5\u6765\u5904\u7406\u4e8b\u4ef6\uff0c\u5e76\u4fdd\u8bc1\u76d1\u542c\u5668\u6309\u987a\u5e8f\u89e6\u53d1\u3002<\/p>\n<\/p>\n

1. \u4e8b\u4ef6\u4f20\u64ad\u673a\u5236<\/h4>\n<\/p>\n

\u5f53\u4e00\u4e2a\u4e8b\u4ef6\u5728DOM\u4e0a\u89e6\u53d1\u65f6\uff0c\u5b83\u4f1a\u7ecf\u5386\u4e09\u4e2a\u9636\u6bb5\uff1a\u6355\u83b7\u9636\u6bb5\u3001\u76ee\u6807\u9636\u6bb5\u548c\u5192\u6ce1\u9636\u6bb5\u3002\u76d1\u542c\u5668\u53ef\u4ee5\u5728\u8fd9\u4e9b\u9636\u6bb5\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u88ab\u89e6\u53d1\u3002<\/p>\n<\/p>\n

2. \u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u6267\u884c<\/h4>\n<\/p>\n

\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u56de\u8c03\u4f1a\u88ab\u89c6\u4e3a\u5b8f\u4efb\u52a1\uff0c\u52a0\u5165\u5230\u4efb\u52a1\u961f\u5217\u4e2d\u7b49\u5f85\u6267\u884c\u3002\u5982\u679c\u76d1\u542c\u5668\u4e2d\u6267\u884c\u4e86\u5f02\u6b65\u64cd\u4f5c\uff0c\u90a3\u4e48\u5176\u5bf9\u5e94\u56de\u8c03\u5219\u6709\u53ef\u80fd\u662f\u5b8f\u4efb\u52a1\u6216\u5fae\u4efb\u52a1\uff0c\u53d6\u51b3\u4e8e\u5f02\u6b65\u64cd\u4f5c\u7684\u7c7b\u578b\u3002<\/p>\n<\/p>\n

\u4e94\u3001Promise\u4e0e\u5f02\u6b65\u51fd\u6570<\/h3>\n<\/p>\n

Promise\u662fJavaScript\u4e2d\u5904\u7406\u5f02\u6b65\u64cd\u4f5c\u7684\u91cd\u8981\u6982\u5ff5\u4e4b\u4e00\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u5f02\u6b65\u63a7\u5236\u6d41\u7a0b\u3002\u5728Promise\u89e3\u51b3\uff08resolve\uff09\u6216\u62d2\u7edd\uff08reject\uff09\u4e4b\u540e\uff0c\u76f8\u5bf9\u5e94\u7684.then()\u6216.catch()\u56de\u8c03\u4f1a\u53d8\u4e3a\u5fae\u4efb\u52a1\u3002<\/p>\n<\/p>\n

1. Promise\u7684\u6267\u884c\u7ec6\u8282<\/h4>\n<\/p>\n

\u5f53Promise\u88ab\u89e3\u51b3\u6216\u62d2\u7edd\u65f6\uff0c\u5176\u56de\u8c03\u4e0d\u4f1a\u7acb\u5373\u6267\u884c\uff0c\u800c\u662f\u88ab\u653e\u5165\u5fae\u4efb\u52a1\u961f\u5217\uff0c\u7b49\u5f85\u5f53\u524d\u5b8f\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\u540e\u6267\u884c\u3002\u8fd9\u786e\u4fdd\u4e86Promise\u7684\u6267\u884c\u987a\u5e8f\u548c\u5f02\u6b65\u884c\u4e3a\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<\/p>\n

2. Async\/Await\u7684\u6d41\u7a0b<\/h4>\n<\/p>\n

Async\u51fd\u6570\u4f7f\u5f97\u5f02\u6b65\u4ee3\u7801\u770b\u8d77\u6765\u50cf\u540c\u6b65\u4ee3\u7801\u3002\u5728\u5185\u90e8\uff0c\u5b83\u4eec\u662f\u901a\u8fc7Promises\u6765\u5b9e\u73b0\u7684\u3002\u4f7f\u7528await\u5173\u952e\u8bcd\u4f1a\u6682\u505casync\u51fd\u6570\u7684\u6267\u884c\uff0c\u7b49\u5f85Promise\u89e3\u51b3\u3002\u5728\u6280\u672f\u4e0a\uff0c\u8fd9\u610f\u5473\u7740async\u51fd\u6570\u6bcf\u6b21\u9047\u5230await\u65f6\uff0c\u90fd\u4f1a\u91ca\u653e\u8c03\u7528\u6808\uff0c\u8ba9\u51fa\u63a7\u5236\u6743\uff0c\u76f4\u5230await\u7684\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u3002<\/p>\n<\/p>\n

\u516d\u3001\u79fb\u52a8\u7aef\u7279\u6709\u7684\u8003\u8651\u56e0\u7d20<\/h3>\n<\/p>\n

\u5728\u79fb\u52a8\u7aef\u5f00\u53d1\u4e2d\uff0c\u8981\u7279\u522b\u8003\u8651\u6027\u80fd\u548c\u54cd\u5e94\u6027<\/strong>\u3002\u7531\u4e8e\u79fb\u52a8\u8bbe\u5907\u7684\u8ba1\u7b97\u80fd\u529b\u3001\u5185\u5b58\u548c\u7f51\u7edc\u8fde\u63a5\u901f\u5ea6\u53ef\u80fd\u4e0d\u5982\u684c\u9762\u8bbe\u5907\uff0c\u56e0\u6b64\u5bf9\u4e8eJavaScript\u7684\u6267\u884c\u987a\u5e8f\u548c\u5f02\u6b65\u64cd\u4f5c\u7684\u7ba1\u7406\u8981\u66f4\u52a0\u9ad8\u6548\u548c\u7cbe\u7ec6\u3002\u52a8\u753b\u3001\u6eda\u52a8\u3001\u89e6\u6478\u4e8b\u4ef6\u7b49\u53ef\u80fd\u4f1a\u5f15\u8d77\u66f4\u9891\u7e41\u7684UI\u66f4\u65b0\uff0c\u9700\u8981\u4f18\u5316\u4ee3\u7801\u6267\u884c\u548c\u51cf\u5c11\u91cd\u7ed8\u91cd\u6392\u3002<\/p>\n<\/p>\n

1. \u89e6\u6478\u4e8b\u4ef6\u7684\u5904\u7406<\/h4>\n<\/p>\n

\u7531\u4e8e\u89e6\u6478\u5c4f\u7684\u666e\u53ca\uff0c\u79fb\u52a8Web\u5f00\u53d1\u4e2d\u5e38\u6d89\u53ca\u5bf9\u89e6\u6478\u4e8b\u4ef6\u7684\u5904\u7406\u3002\u89e6\u6478\u4e8b\u4ef6\u5982touchstart\u3001touchmove\u3001touchend\u901a\u5e38\u4f5c\u4e3a\u5b8f\u4efb\u52a1\u5165\u961f\u5217\u5904\u7406\u3002<\/p>\n<\/p>\n

2. \u6027\u80fd\u4f18\u5316\u7b56\u7565<\/h4>\n<\/p>\n

\u4e3a\u63d0\u5347\u79fb\u52a8\u7aef\u7528\u6237\u4f53\u9a8c\uff0c\u5728\u8bbe\u8ba1\u4ee3\u7801\u6267\u884c\u987a\u5e8f\u65f6\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u91c7\u7528Lazy loading\u3001Throttling\u548cDebouncing\u7b49\u6280\u672f\u7b56\u7565\uff0c\u6765\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u4ee3\u7801\u6267\u884c\u548cUI\u6e32\u67d3\uff0c\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\uff0c\u907f\u514d\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002<\/p>\n<\/p>\n

\u5728Web\u79fb\u52a8\u7aef\u5f00\u53d1\u4e2d\uff0c\u7406\u89e3\u548c\u6b63\u786e\u5e94\u7528JavaScript\u4ee3\u7801\u6267\u884c\u987a\u5e8f\uff0c\u5bf9\u4e8e\u7f16\u5199\u9ad8\u6548\u3001\u54cd\u5e94\u5feb\u901f\u7684\u5e94\u7528\u81f3\u5173\u91cd\u8981\u3002\u5408\u7406\u5b89\u6392\u540c\u6b65\u548c\u5f02\u6b65\u4efb\u52a1\uff0c\u5e76\u638c\u63e1\u4e8b\u4ef6\u5faa\u73af\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u80fd\u591f\u663e\u8457\u63d0\u5347\u5e94\u7528\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u3002\u901a\u8fc7\u4e0a\u8ff0\u5185\u5bb9\u7684\u8be6\u7ec6\u89e3\u6790\uff0c\u5e0c\u671b\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u5efa\u7acb\u8d77\u8fd9\u4e00\u5173\u952e\u77e5\u8bc6\u70b9\u7684\u7cfb\u7edf\u8ba4\u8bc6\u3002<\/p>\n<\/p>\n

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

1. JavaScript\u4ee3\u7801\u5728\u79fb\u52a8\u7aef\u5f00\u53d1\u4e2d\u7684\u6267\u884c\u987a\u5e8f\u662f\u5982\u4f55\u786e\u5b9a\u7684\uff1f<\/strong><\/p>\n

JavaScript\u4ee3\u7801\u5728\u79fb\u52a8\u7aef\u5f00\u53d1\u4e2d\u7684\u6267\u884c\u987a\u5e8f\u662f\u7531\u4ee3\u7801\u7684\u987a\u5e8f\u548c\u4e8b\u4ef6\u89e6\u53d1\u786e\u5b9a\u7684\u3002\u5f53\u9875\u9762\u52a0\u8f7d\u65f6\uff0cJavaScript\u4ee3\u7801\u4f1a\u6309\u7167\u5176\u5728\u9875\u9762\u4e2d\u7684\u987a\u5e8f\u4f9d\u6b21\u6267\u884c\u3002\u5982\u679c\u4ee3\u7801\u5305\u542b\u4e86\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u90a3\u4e48\u4ee3\u7801\u7684\u6267\u884c\u987a\u5e8f\u5c06\u53d6\u51b3\u4e8e\u4e8b\u4ef6\u7684\u89e6\u53d1\u987a\u5e8f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5728\u9875\u9762\u4e2d\u6709\u591a\u4e2a\u6309\u94ae\uff0c\u5e76\u4e14\u6bcf\u4e2a\u6309\u94ae\u90fd\u6709\u4e00\u4e2a\u70b9\u51fb\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u90a3\u4e48\u5f53\u5176\u4e2d\u4e00\u4e2a\u6309\u94ae\u88ab\u70b9\u51fb\u65f6\uff0c\u5b83\u5bf9\u5e94\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u5c31\u4f1a\u88ab\u6267\u884c\u3002<\/p>\n

2. JavaScript\u4ee3\u7801\u4e2d\u5982\u4f55\u5b9a\u4e49\u548c\u63a7\u5236\u4ee3\u7801\u7684\u6267\u884c\u987a\u5e8f\uff1f<\/strong><\/p>\n

\u5728JavaScript\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u6765\u5b9a\u4e49\u548c\u63a7\u5236\u4ee3\u7801\u7684\u6267\u884c\u987a\u5e8f\u3002\u901a\u8fc7\u5c06\u4ee3\u7801\u5c01\u88c5\u5728\u51fd\u6570\u5185\u90e8\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5728\u9002\u5f53\u7684\u65f6\u673a\u8c03\u7528\u8fd9\u4e9b\u51fd\u6570\u6765\u6267\u884c\u4ee3\u7801\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u6761\u4ef6\u8bed\u53e5\uff08\u4f8b\u5982if\u8bed\u53e5\uff09\u6765\u63a7\u5236\u4ee3\u7801\u7684\u6267\u884c\u903b\u8f91\uff0c\u4ece\u800c\u5b9e\u73b0\u4e0d\u540c\u6761\u4ef6\u4e0b\u7684\u4ee3\u7801\u6267\u884c\u987a\u5e8f\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u5f02\u6b65\u64cd\u4f5c\uff08\u4f8b\u5982Promise\u548casync\/await\uff09\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u4ee3\u7801\u6267\u884c\u987a\u5e8f\u7684\u7cbe\u786e\u63a7\u5236\u3002<\/p>\n

3. \u5982\u4f55\u5904\u7406JavaScript\u4ee3\u7801\u5728\u79fb\u52a8\u7aef\u5f00\u53d1\u4e2d\u7684\u5f02\u6b65\u6267\u884c\u95ee\u9898\uff1f<\/strong><\/p>\n

\u5728\u79fb\u52a8\u7aef\u5f00\u53d1\u4e2d\uff0c\u7531\u4e8e\u7f51\u7edc\u8bf7\u6c42\u3001\u6570\u636e\u52a0\u8f7d\u548c\u7528\u6237\u4ea4\u4e92\u7b49\u539f\u56e0\uff0cJavaScript\u4ee3\u7801\u7ecf\u5e38\u9762\u4e34\u5f02\u6b65\u6267\u884c\u7684\u60c5\u51b5\u3002\u4e3a\u4e86\u5904\u7406\u8fd9\u4e9b\u5f02\u6b65\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u3001Promise\u5bf9\u8c61\u6216async\/await\u7b49\u65b9\u5f0f\u3002<\/p>\n

\u56de\u8c03\u51fd\u6570\u662f\u4e00\u79cd\u5e38\u7528\u7684\u5904\u7406\u5f02\u6b65\u64cd\u4f5c\u7684\u65b9\u6cd5\u3002\u4f60\u53ef\u4ee5\u5c06\u9700\u8981\u5728\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u540e\u6267\u884c\u7684\u4ee3\u7801\u4f5c\u4e3a\u56de\u8c03\u51fd\u6570\u4f20\u9012\u7ed9\u76f8\u5e94\u7684\u5f02\u6b65\u51fd\u6570\uff0c\u5f53\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u65f6\uff0c\u56de\u8c03\u51fd\u6570\u5c06\u88ab\u8c03\u7528\u3002<\/p>\n

Promise\u5bf9\u8c61\u662f\u4e00\u79cd\u66f4\u9ad8\u7ea7\u7684\u5f02\u6b65\u5904\u7406\u673a\u5236\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u5f3a\u5927\u7684\u529f\u80fd\u548c\u66f4\u6e05\u6670\u7684\u4ee3\u7801\u7ed3\u6784\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u521b\u5efaPromise\u5bf9\u8c61\u6765\u5c01\u88c5\u5f02\u6b65\u64cd\u4f5c\uff0c\u5e76\u4f7f\u7528then()\u548ccatch()\u7b49\u65b9\u6cd5\u6765\u5904\u7406\u64cd\u4f5c\u7684\u6210\u529f\u6216\u5931\u8d25\u3002<\/p>\n

async\/await\u662fES8\u4e2d\u5f15\u5165\u7684\u5f02\u6b65\u5904\u7406\u65b9\u6cd5\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u76f4\u89c2\u3001\u6613\u4e8e\u7406\u89e3\u7684\u65b9\u5f0f\u6765\u5904\u7406\u5f02\u6b65\u4ee3\u7801\u3002\u901a\u8fc7\u4f7f\u7528async\u5173\u952e\u5b57\u5b9a\u4e49\u5f02\u6b65\u51fd\u6570\uff0c\u4f60\u53ef\u4ee5\u5728\u51fd\u6570\u5185\u90e8\u4f7f\u7528await\u5173\u952e\u5b57\u6765\u7b49\u5f85\u5f02\u6b65\u64cd\u4f5c\u7684\u5b8c\u6210\uff0c\u7136\u540e\u7ee7\u7eed\u6267\u884c\u540e\u7eed\u7684\u4ee3\u7801\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Web\u79fb\u52a8\u5f00\u53d1\u4e2d\uff0cJavaScript\u4ee3\u7801\u6267\u884c\u987a\u5e8f\u7684\u8bbe\u8ba1\u9075\u5faa\u4e8b\u4ef6\u5faa\u73af\u673a\u5236\uff0c\u5f02\u6b65\u7f16\u7a0b\u6a21\u5f0f\u3001\u548c\u4f9d\u8d56\u7ba1\u7406\u7b56\u7565\u3002 \u4ee3\u7801 […]","protected":false},"author":3,"featured_media":164302,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/164291"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=164291"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/164291\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/164302"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=164291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=164291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=164291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}