{"id":166579,"date":"2024-05-08T15:40:08","date_gmt":"2024-05-08T07:40:08","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166579.html"},"modified":"2024-05-08T15:40:12","modified_gmt":"2024-05-08T07:40:12","slug":"javascript%e6%9c%89%e5%93%aa%e4%ba%9b%e9%87%8d%e7%82%b9%e7%9f%a5%e8%af%86","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/166579.html","title":{"rendered":"JavaScript\u6709\u54ea\u4e9b\u91cd\u70b9\u77e5\u8bc6"},"content":{"rendered":"

\"JavaScript\u6709\u54ea\u4e9b\u91cd\u70b9\u77e5\u8bc6\"<\/p>\n

JavaScript\u7684\u91cd\u70b9\u77e5\u8bc6\u4e3b\u8981\u5305\u62ec\u53d8\u91cf\u548c\u6570\u636e\u7c7b\u578b\u3001\u64cd\u4f5c\u7b26\u3001\u63a7\u5236\u7ed3\u6784\u3001\u51fd\u6570\u3001\u5bf9\u8c61\u3001\u6570\u7ec4\u3001\u539f\u578b\u548c\u539f\u578b\u94fe\u3001ES6+\u65b0\u7279\u6027\u3001\u5f02\u6b65\u7f16\u7a0b\u3001\u4e8b\u4ef6\u5904\u7406\u3001DOM\u64cd\u4f5c<\/strong>\u7b49\u3002\u8fd9\u4e9b\u6784\u6210\u4e86JavaScript\u7684\u6838\u5fc3\u548c\u57fa\u7840\uff0c\u5bf9\u4e8e\u5b66\u4e60\u548c\u638c\u63e1JavaScript\u81f3\u5173\u91cd\u8981\u3002\u5728\u8fd9\u4e9b\u91cd\u70b9\u77e5\u8bc6\u4e2d\uff0c\u51fd\u6570<\/strong>\u5c24\u4e3a\u6838\u5fc3\uff0c\u56e0\u4e3a\u51fd\u6570\u662fJavaScript\u4e2d\u5b9e\u73b0\u903b\u8f91\u5904\u7406\u7684\u57fa\u672c\u5355\u4f4d\u3002\u51fd\u6570\u4e0d\u4ec5\u53ef\u4ee5\u5c01\u88c5\u4ee3\u7801\u4ee5\u590d\u7528\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u8bfb\u6027\uff0c\u800c\u4e14\u8fd8\u662f\u5b9e\u73b0\u9ad8\u7ea7\u529f\u80fd\u5982\u95ed\u5305\u3001\u56de\u8c03\u51fd\u6570\u548c\u5f02\u6b65\u7f16\u7a0b\u7684\u57fa\u77f3\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u53d8\u91cf\u548c\u6570\u636e\u7c7b\u578b<\/h3>\n<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u7406\u89e3\u53d8\u91cf\u548c\u6570\u636e\u7c7b\u578b\u662f\u57fa\u7840\u3002\u53d8\u91cf\u662f\u7528\u6765\u5b58\u50a8\u4fe1\u606f\u7684\u5bb9\u5668\uff0cJavaScript\u662f\u4e00\u79cd\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\uff0c\u610f\u5473\u7740\u540c\u4e00\u4e2a\u53d8\u91cf\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002JavaScript\u7684\u6570\u636e\u7c7b\u578b\u4e3b\u8981\u6709\u4e24\u5927\u7c7b\uff1a\u539f\u59cb\u7c7b\u578b<\/strong>\u548c\u5f15\u7528\u7c7b\u578b<\/strong>\u3002\u539f\u59cb\u7c7b\u578b\u5305\u62ecundefined<\/code>\u3001null<\/code>\u3001boolean<\/code>\u3001number<\/code>\u3001string<\/code>\u3001symbol<\/code>\u548cbigint<\/code>\u3002\u800c\u5f15\u7528\u7c7b\u578b\u4e3b\u8981\u6307\u7684\u662f\u5bf9\u8c61\u7c7b\u578b\uff0c\u5305\u62ec\u6807\u51c6\u7684Object<\/code>\u3001\u6570\u7ec4Array<\/code>\u548c\u51fd\u6570Function<\/code>\u3002<\/p>\n<\/p>\n

\u539f\u59cb\u7c7b\u578b\u4e0e\u5f15\u7528\u7c7b\u578b\u7684\u4e0d\u540c<\/h4>\n<\/p>\n

\u539f\u59cb\u7c7b\u578b\u7684\u503c\u76f4\u63a5\u5b58\u50a8\u5728\u53d8\u91cf\u8bbf\u95ee\u7684\u4f4d\u7f6e\uff0c\u8fd9\u610f\u5473\u7740\u5f53\u4f60\u64cd\u4f5c\u8fd9\u4e2a\u53d8\u91cf\u65f6\uff0c\u5b9e\u9645\u4e0a\u662f\u5728\u64cd\u4f5c\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\u7684\u5b9e\u9645\u503c\u3002\u76f8\u53cd\uff0c\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\u5b58\u50a8\u7684\u662f\u4e00\u4e2a\u5730\u5740\uff08\u6216\u79f0\u4e4b\u4e3a\u201c\u5f15\u7528\u201d\uff09\uff0c\u8fd9\u4e2a\u5730\u5740\u4e0e\u5b9e\u9645\u7684\u6570\u636e\u662f\u5206\u5f00\u5b58\u50a8\u7684\u3002\u8fd9\u79cd\u5dee\u5f02\u5bfc\u81f4\u4e86\u5728\u590d\u5236\u53d8\u91cf\u6216\u8005\u4f5c\u4e3a\u51fd\u6570\u53c2\u6570\u4f20\u9012\u65f6\uff0c\u539f\u59cb\u7c7b\u578b\u548c\u5f15\u7528\u7c7b\u578b\u7684\u884c\u4e3a\u5927\u4e0d\u76f8\u540c\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u64cd\u4f5c\u7b26<\/h3>\n<\/p>\n

JavaScript\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u64cd\u4f5c\u7b26\uff0c\u4ee5\u652f\u6301\u5404\u79cd\u6570\u636e\u7684\u64cd\u4f5c\uff0c\u5305\u62ec\u7b97\u672f\u64cd\u4f5c\u7b26\u3001\u6bd4\u8f83\u64cd\u4f5c\u7b26\u3001\u903b\u8f91\u64cd\u4f5c\u7b26\u3001\u8d4b\u503c\u64cd\u4f5c\u7b26\u3001\u6761\u4ef6\uff08\u4e09\u5143\uff09\u64cd\u4f5c\u7b26\u7b49\u3002\u6df1\u5165\u7406\u89e3\u8fd9\u4e9b\u64cd\u4f5c\u7b26\u7684\u8fd0\u7528\uff0c\u662f\u7f16\u5199\u6709\u6548JavaScript\u4ee3\u7801\u7684\u5173\u952e\u3002<\/p>\n<\/p>\n

\u7b97\u672f\u64cd\u4f5c\u7b26\u548c\u6bd4\u8f83\u64cd\u4f5c\u7b26<\/h4>\n<\/p>\n

\u7b97\u672f\u64cd\u4f5c\u7b26\u5141\u8bb8\u6211\u4eec\u8fdb\u884c\u57fa\u672c\u7684\u6570\u5b66\u8fd0\u7b97\uff0c\u5982\u52a0\u6cd5\u3001\u51cf\u6cd5\u3001\u4e58\u6cd5\u3001\u9664\u6cd5\u7b49\uff0c\u800c\u6bd4\u8f83\u64cd\u4f5c\u7b26\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u503c\u7684\u5927\u5c0f\uff0c\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\u3002\u8fd9\u4e9b\u64cd\u4f5c\u7b26\u5728\u5904\u7406\u903b\u8f91\u5224\u65ad\u548c\u6570\u503c\u8fd0\u7b97\u65f6\u6781\u4e3a\u91cd\u8981\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u63a7\u5236\u7ed3\u6784<\/h3>\n<\/p>\n

\u63a7\u5236\u7ed3\u6784\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u6761\u4ef6\u6765\u63a7\u5236\u4ee3\u7801\u7684\u6d41\u7a0b\u3002\u5728JavaScript\u4e2d\uff0c\u6700\u5e38\u89c1\u7684\u63a7\u5236\u7ed3\u6784\u6709if...else<\/code>\u8bed\u53e5\u3001\u5404\u79cd\u5faa\u73af\u8bed\u53e5\uff08\u5982for<\/code>\u5faa\u73af\u3001while<\/code>\u5faa\u73af\uff09\u548cswitch<\/code>\u8bed\u53e5\u3002<\/p>\n<\/p>\n

\u6761\u4ef6\u5224\u65ad\u548c\u5faa\u73af\u63a7\u5236<\/h4>\n<\/p>\n

\u5229\u7528\u6761\u4ef6\u5224\u65ad\uff0c\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u6761\u4ef6\u6267\u884c\u4e0d\u540c\u4ee3\u7801\u5757\uff0c\u800c\u5faa\u73af\u63a7\u5236\u53ef\u4ee5\u4f7f\u6211\u4eec\u5728\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u7684\u60c5\u51b5\u4e0b\u91cd\u590d\u6267\u884c\u4ee3\u7801\u5757\uff0c\u6781\u5927\u5730\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u590d\u7528\u6027\u548c\u6548\u7387\u3002<\/p>\n<\/p>\n

\u56db\u3001\u51fd\u6570<\/h3>\n<\/p>\n

\u51fd\u6570\u662fJavaScript\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u662f\u4e00\u6bb5\u53ef\u4ee5\u88ab\u91cd\u590d\u8c03\u7528\u7684\u4ee3\u7801\u5757\u3002JavaScript\u4e2d\u7684\u51fd\u6570\u53ef\u4ee5\u63a5\u6536\u53c2\u6570\u3001\u8fd4\u56de\u503c\uff0c\u5e76\u4e14\u652f\u6301\u95ed\u5305\u3001\u9ad8\u9636\u51fd\u6570\u7b49\u9ad8\u7ea7\u7279\u6027\u3002<\/p>\n<\/p>\n

\u51fd\u6570\u58f0\u660e\u4e0e\u8868\u8fbe\u5f0f<\/h4>\n<\/p>\n

JavaScript\u63d0\u4f9b\u4e86\u51fd\u6570\u58f0\u660e\u548c\u51fd\u6570\u8868\u8fbe\u5f0f\u4e24\u79cd\u65b9\u5f0f\u6765\u5b9a\u4e49\u51fd\u6570\u3002\u4e24\u8005\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u6267\u884c\u65f6\u673a\u548c\u4f5c\u7528\u57df\u7684\u4e0d\u540c\u3002\u4e86\u89e3\u8fd9\u4e9b\u5dee\u5f02\u4ee5\u53ca\u5982\u4f55\u6b63\u786e\u4f7f\u7528\u5b83\u4eec\uff0c\u5bf9\u4e8e\u7f16\u5199\u9ad8\u8d28\u91cf\u7684JavaScript\u4ee3\u7801\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u5bf9\u8c61\u3001\u6570\u7ec4<\/h3>\n<\/p>\n

JavaScript\u662f\u4e00\u79cd\u57fa\u4e8e\u5bf9\u8c61\u7684\u8bed\u8a00\uff0c\u51e0\u4e4e\u6240\u6709\u7684\u4e8b\u7269\u90fd\u662f\u5bf9\u8c61\u3002\u5bf9\u8c61\u7528\u6765\u5b58\u50a8\u591a\u4e2a\u503c\u4e3a\u4e00\u7ec4\u7684\u60c5\u51b5\uff0c\u800c\u6570\u7ec4\u662f\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u7528\u4e8e\u5b58\u50a8\u6709\u5e8f\u7684\u6570\u636e\u96c6\u5408\u3002<\/p>\n<\/p>\n

\u5bf9\u8c61\u548c\u6570\u7ec4\u7684\u64cd\u4f5c<\/h4>\n<\/p>\n

\u638c\u63e1\u5bf9\u8c61\u548c\u6570\u7ec4\u7684\u521b\u5efa\u3001\u8bbf\u95ee\u548c\u64cd\u4f5c\u662f\u8fdb\u884cJavaScript\u7f16\u7a0b\u7684\u57fa\u7840\u3002\u5bf9\u8c61\u5c5e\u6027\u7684\u6dfb\u52a0\u3001\u5220\u9664\u3001\u904d\u5386\u4ee5\u53ca\u6570\u7ec4\u7684\u589e\u5220\u67e5\u6539\u90fd\u662f\u5e38\u7528\u64cd\u4f5c\uff0c\u9700\u8981\u719f\u7ec3\u638c\u63e1\u3002<\/p>\n<\/p>\n

\u516d\u3001\u539f\u578b\u548c\u539f\u578b\u94fe<\/h3>\n<\/p>\n

JavaScript\u7684\u539f\u578b\u548c\u539f\u578b\u94fe\u662f\u5b9e\u73b0\u7ee7\u627f\u7684\u673a\u5236\u3002\u6bcf\u4e00\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u539f\u578b\u5bf9\u8c61\uff0c\u5bf9\u8c61\u4ee5\u5176\u539f\u578b\u4e3a\u6a21\u677f\u3001\u4ece\u539f\u578b\u7ee7\u627f\u65b9\u6cd5\u548c\u5c5e\u6027\u3002<\/p>\n<\/p>\n

\u7406\u89e3\u539f\u578b\u7ee7\u627f<\/h4>\n<\/p>\n

\u901a\u8fc7\u539f\u578b\u7ee7\u627f\uff0cJavaScript\u5141\u8bb8\u4e00\u4e2a\u5bf9\u8c61\u7ee7\u627f\u53e6\u4e00\u4e2a\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u8fd9\u79cd\u673a\u5236\u4e0d\u4ec5\u51cf\u5c11\u4e86\u5bf9\u8c61\u95f4\u76f8\u540c\u65b9\u6cd5\u7684\u91cd\u590d\u5b9a\u4e49\uff0c\u4e5f\u5b9e\u73b0\u4e86\u590d\u6742\u7684\u7c7b\u578b\u7ee7\u627f\u7ed3\u6784\u3002<\/p>\n<\/p>\n

\u4e03\u3001ES6+\u65b0\u7279\u6027<\/h3>\n<\/p>\n

\u81eaES6\uff08ECMAScript 2015\uff09\u8d77\uff0cJavaScript\u5f15\u5165\u4e86\u8bb8\u591a\u65b0\u7279\u6027\uff0c\u5982\u7bad\u5934\u51fd\u6570\u3001\u7c7b\u3001\u6a21\u5757\u5bfc\u5165\u5bfc\u51fa\u3001Promises\u3001\u6a21\u677f\u5b57\u7b26\u4e32\u3001\u89e3\u6784\u8d4b\u503c\u7b49\uff0c\u6781\u5927\u5730\u4e30\u5bcc\u4e86JavaScript\u7684\u8868\u8fbe\u80fd\u529b\u548c\u7f16\u7a0b\u4fbf\u5229\u6027\u3002<\/p>\n<\/p>\n

\u73b0\u4ee3\u5316JavaScript\u7684\u7f16\u7a0b\u5b9e\u8df5<\/h4>\n<\/p>\n

\u638c\u63e1ES6+\u7684\u65b0\u7279\u6027\u5bf9\u4e8e\u7f16\u5199\u73b0\u4ee3\u5316\u3001\u7b80\u6d01\u9ad8\u6548\u7684JavaScript\u4ee3\u7801\u975e\u5e38\u91cd\u8981\u3002\u8fd9\u4e9b\u65b0\u7279\u6027\u4e0d\u4ec5\u63d0\u4f9b\u4e86\u65b0\u7684\u8bed\u6cd5\u7cd6\uff0c\u8fd8\u5f15\u5165\u4e86\u65b0\u7684\u7f16\u7a0b\u8303\u5f0f\u548c\u601d\u60f3\uff0c\u662f\u6bcf\u4e00\u4e2aJavaScript\u5f00\u53d1\u8005\u5fc5\u987b\u5b66\u4e60\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n

\u516b\u3001\u5f02\u6b65\u7f16\u7a0b<\/h3>\n<\/p>\n

\u5f02\u6b65\u7f16\u7a0b\u662fJavaScript\u4e2d\u7684\u4e00\u4e2a\u6838\u5fc3\u6982\u5ff5\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u8bf8\u5982\u7f51\u7edc\u8bf7\u6c42\u3001\u6587\u4ef6\u64cd\u4f5c\u7b49\u7b49\u65f6\uff0c\u5b83\u4f7f\u5f97JavaScript\u53ef\u4ee5\u5728\u7b49\u5f85\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u65f6\u7ee7\u7eed\u6267\u884c\u5176\u4ed6\u4efb\u52a1\uff0c\u63d0\u9ad8\u4e86\u7a0b\u5e8f\u7684\u6548\u7387\u548c\u54cd\u5e94\u6027\u3002<\/p>\n<\/p>\n

Promises\u548cAsync\/AwAI<\/a>t<\/h4>\n<\/p>\n

\u7406\u89e3\u5e76\u719f\u7ec3\u8fd0\u7528Promises\u548cAsync\/Await\uff0c\u662f\u8fdb\u884c\u9ad8\u6548\u5f02\u6b65\u7f16\u7a0b\u7684\u5173\u952e\u3002\u8fd9\u4e9b\u7279\u6027\u7b80\u5316\u4e86\u5f02\u6b65\u64cd\u4f5c\u7684\u5904\u7406\uff0c\u5e76\u4f7f\u4ee3\u7801\u66f4\u6613\u4e8e\u7406\u89e3\u548c\u7ef4\u62a4\u3002<\/p>\n<\/p>\n

\u4e5d\u3001\u4e8b\u4ef6\u5904\u7406<\/h3>\n<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u4e8b\u4ef6\u5904\u7406\u662f\u4e0e\u7528\u6237\u4ea4\u4e92\u548c\u64cd\u4f5cDOM\u7684\u57fa\u672c\u65b9\u5f0f\u3002\u7406\u89e3\u4e8b\u4ef6\u6a21\u578b\u3001\u4e8b\u4ef6\u7ed1\u5b9a\u3001\u4e8b\u4ef6\u59d4\u6258\u7b49\u662f\u8fdb\u884c\u524d\u7aef\u5f00\u53d1\u7684\u57fa\u7840\u3002<\/p>\n<\/p>\n

\u7b80\u5316\u4e8b\u4ef6\u5904\u7406\u7684\u65b9\u6cd5<\/h4>\n<\/p>\n

\u4f7f\u7528\u73b0\u4ee3JavaScript\u6846\u67b6\uff08\u5982React\u3001Vue\u7b49\uff09\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u7b80\u5316\u4e8b\u4ef6\u5904\u7406\u6d41\u7a0b\uff0c\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u548c\u7528\u6237\u4f53\u9a8c\u3002\u719f\u6089\u8fd9\u4e9b\u6846\u67b6\u7684\u4e8b\u4ef6\u5904\u7406\u539f\u7406\u548c\u65b9\u6cd5\uff0c\u5bf9\u4e8e\u524d\u7aef\u5f00\u53d1\u8005\u6765\u8bf4\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<\/p>\n

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1. JavaScript\u4e2d\u7684\u53d8\u91cf\u548c\u6570\u636e\u7c7b\u578b\u6709\u54ea\u4e9b\uff1f<\/strong>
\nJavaScript\u4e2d\u7684\u53d8\u91cf\u53ef\u4ee5\u5b58\u50a8\u5404\u79cd\u7c7b\u578b\u7684\u6570\u636e\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u3001\u5e03\u5c14\u503c\u3001\u6570\u7ec4\u3001\u5bf9\u8c61\u7b49\u3002\u5176\u4e2d\uff0c\u5b57\u7b26\u4e32\u662f\u7528\u6765\u5b58\u50a8\u6587\u672c\u5185\u5bb9\u7684\uff0c\u6570\u5b57\u53ef\u4ee5\u662f\u6574\u6570\u6216\u5c0f\u6570\uff0c\u5e03\u5c14\u503c\u8868\u793a\u771f\u6216\u5047\uff0c\u6570\u7ec4\u662f\u7528\u6765\u5b58\u50a8\u591a\u4e2a\u503c\u7684\u96c6\u5408\uff0c\u5bf9\u8c61\u662f\u7531\u5c5e\u6027\u548c\u65b9\u6cd5\u7ec4\u6210\u7684\u96c6\u5408\u3002<\/p>\n

2. JavaScript\u4e2d\u7684\u6761\u4ef6\u8bed\u53e5\u548c\u5faa\u73af\u8bed\u53e5\u5982\u4f55\u4f7f\u7528\uff1f<\/strong>
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3. JavaScript\u4e2d\u7684\u51fd\u6570\u662f\u4ec0\u4e48\uff1f\u5982\u4f55\u5b9a\u4e49\u548c\u8c03\u7528\u51fd\u6570\uff1f<\/strong>
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