{"id":166285,"date":"2024-05-08T15:33:35","date_gmt":"2024-05-08T07:33:35","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166285.html"},"modified":"2024-05-08T15:33:38","modified_gmt":"2024-05-08T07:33:38","slug":"javascript%e6%80%8e%e4%b9%88%e6%a0%b7%e7%ae%97%e6%98%af%e5%85%a5%e9%97%a8%e4%ba%86","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/166285.html","title":{"rendered":"JavaScript\u600e\u4e48\u6837\u7b97\u662f\u5165\u95e8\u4e86"},"content":{"rendered":"

\"JavaScript\u600e\u4e48\u6837\u7b97\u662f\u5165\u95e8\u4e86\"<\/p>\n

JavaScript\u7684\u5165\u95e8\u53ef\u4ee5\u901a\u8fc7\u7406\u89e3\u57fa\u7840\u8bed\u6cd5\u7ed3\u6784\u3001\u638c\u63e1\u6838\u5fc3\u6982\u5ff5\u3001\u719f\u6089DOM\u64cd\u4f5c\u3001\u80fd\u591f\u7f16\u5199\u57fa\u7840\u7a0b\u5e8f<\/strong>\u7b49\u51e0\u4e2a\u65b9\u9762\u6765\u8861\u91cf\u3002\u5f53\u4f60\u53ef\u4ee5\u81ea\u5982\u5730\u8fd0\u7528\u6d41\u7a0b\u63a7\u5236\u8bed\u53e5\uff08\u5982if\u3001for\uff09\u3001\u61c2\u5f97\u5982\u4f55\u5b9a\u4e49\u53d8\u91cf\u548c\u51fd\u6570\u3001\u5bf9\u8c61\u548c\u6570\u7ec4\u5bf9\u4f60\u6765\u8bf4\u4e0d\u518d\u964c\u751f\u3001\u5e76\u4e14\u80fd\u591f\u5b9e\u73b0\u7b80\u5355\u7684\u7f51\u9875\u4ea4\u4e92\u65f6\uff0c\u901a\u5e38\u53ef\u4ee5\u8ba4\u4e3a\u5df2\u7ecf\u5165\u95e8\u3002\u7279\u522b\u662f\u5bf9\u4e8b\u4ef6\u5904\u7406\u673a\u5236<\/strong>\u6709\u4e86\u4e00\u5b9a\u7684\u7406\u89e3\uff0c\u80fd\u591f\u7f16\u5199\u51fa\u7528\u6237\u4e0e\u7f51\u9875\u4ea4\u4e92\u7684\u57fa\u672c\u811a\u672c\uff0c\u5982\u8868\u5355\u9a8c\u8bc1\u6216\u4ea4\u4e92\u5f0f\u754c\u9762\uff0c\u53ef\u4ee5\u8bf4\u5df2\u7ecf\u8fc8\u5165\u4e86JavaScript\u7684\u5927\u95e8\u3002<\/p>\n<\/p>\n

\u5c55\u5f00\u6765\u8bf4\uff0c\u4e8b\u4ef6\u5904\u7406\u673a\u5236<\/strong>\u662f\u7406\u89e3\u548c\u8fd0\u7528JavaScript\u8fdb\u884c\u7f51\u9875\u4ea4\u4e91\u5236\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002JavaScript\u8bbe\u8ba1\u4e4b\u521d\uff0c\u5c31\u662f\u4e3a\u4e86\u80fd\u591f\u5728\u6d4f\u89c8\u5668\u4e2d\u54cd\u5e94\u7528\u6237\u7684\u64cd\u4f5c\u3002\u4e8b\u4ef6\u5904\u7406\u5141\u8bb8JavaScript\u4ee3\u7801\u5728\u7279\u5b9a\u4e8b\u4ef6\u53d1\u751f\u65f6\u6267\u884c\uff0c\u6bd4\u5982\u7528\u6237\u70b9\u51fb\u6309\u94ae\u3001\u586b\u5199\u8868\u5355\u3001\u79fb\u52a8\u9f20\u6807\u7b49\u3002\u7406\u89e3\u4e8b\u4ef6\u548c\u4e8b\u4ef6\u76d1\u542c\u51fd\u6570\u662f\u5b9e\u73b0\u52a8\u6001\u7f51\u9875\u548c\u5e94\u7528\u7684\u5173\u952e\u3002\u719f\u6089\u4e8b\u4ef6\u6a21\u578b\u3001\u4f1a\u4f7f\u7528\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u80fd\u591f\u9488\u5bf9\u5e38\u89c1\u7684\u4e8b\u4ef6\u7f16\u5199\u54cd\u5e94\u51fd\u6570\uff0c\u5747\u6807\u5fd7\u7740\u5bf9JavaScript\u5165\u95e8\u7ea7\u522b\u7684\u638c\u63e1\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u7406\u89e3\u57fa\u7840\u8bed\u6cd5\u548c\u6570\u636e\u7c7b\u578b<\/h3>\n<\/p>\n

\u57fa\u7840\u8bed\u6cd5<\/h4>\n<\/p>\n

JavaScript\u662f\u4e00\u95e8\u52a8\u6001\u7684\u3001\u5f31\u7c7b\u578b\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u638c\u63e1\u5176\u57fa\u672c\u8bed\u6cd5\u662f\u5165\u95e8\u7684\u7b2c\u4e00\u6b65\u3002\u8fd9\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u53d8\u91cf\u58f0\u660e\uff08var\u3001let\u3001const\uff09\u3001\u6570\u636e\u7c7b\u578b\uff08Number\u3001String\u3001Boolean\u3001Object\u3001Undefined\u3001Null\u3001Symbol\u548cBigInt\uff09\u3001\u64cd\u4f5c\u7b26\uff08\u7b97\u672f\u8fd0\u7b97\u7b26\u3001\u6bd4\u8f83\u8fd0\u7b97\u7b26\u3001\u903b\u8f91\u8fd0\u7b97\u7b26\uff09\u3001\u6d41\u7a0b\u63a7\u5236\u8bed\u53e5\uff08if-else\u3001switch\u3001for\u3001while\u5faa\u73af\uff09\u3001\u51fd\u6570\u7684\u58f0\u660e\u548c\u8c03\u7528\u3002<\/p>\n<\/p>\n

\u6570\u636e\u7c7b\u578b<\/h4>\n<\/p>\n

\u7406\u89e3JavaScript\u7684\u6570\u636e\u7c7b\u578b\u53ca\u5176\u7279\u6027\u4e5f\u662f\u57fa\u7840\u77e5\u8bc6\u7684\u4e00\u90e8\u5206\u3002\u5176\u4e2d\u5305\u62ec\u539f\u59cb\u7c7b\u578b\u7684\u503c\uff08\u672a\u5c01\u88c5\u7684\u7b80\u5355\u6570\u636e\u7c7b\u578b\uff09\u5982\u5b57\u7b26\u4e32\uff08String\uff09\u3001\u6570\u5b57\uff08Number\uff09\u3001\u5e03\u5c14\u503c\uff08Boolean\uff09\uff0c\u4ee5\u53ca\u5408\u6210\u7c7b\u578b\u5982\u5bf9\u8c61\uff08Object\uff09\u5305\u62ec\u6570\u7ec4\uff08Array\uff09\u548c\u51fd\u6570\uff08Function\uff09\u3002\u8fd9\u4e9b\u7c7b\u578b\u7684\u6df1\u5165\u7406\u89e3\u5bf9\u4e8e\u7f16\u5199\u6709\u6548\u548c\u9ad8\u6548\u7684\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u638c\u63e1\u6838\u5fc3\u6982\u5ff5<\/h3>\n<\/p>\n

\u53d8\u91cf\u4e0e\u4f5c\u7528\u57df<\/h4>\n<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u4f60\u9700\u8981\u660e\u767d\u53d8\u91cf\u548c\u4f5c\u7528\u57df\u7684\u6982\u5ff5\u3002\u5168\u5c40\u53d8\u91cf\u548c\u5c40\u90e8\u53d8\u91cf\u7684\u533a\u522b\u3001\u5757\u7ea7\u4f5c\u7528\u57df\u548c\u51fd\u6570\u4f5c\u7528\u57df\u7684\u7279\u70b9\uff0c\u8fd9\u4e9b\u90fd\u5173\u7cfb\u5230\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u4ee5\u53ca\u5728\u4ee3\u7801\u7684\u4e0d\u540c\u90e8\u5206\u5982\u4f55\u88ab\u8bbf\u95ee\u548c\u4fee\u6539\u3002<\/p>\n<\/p>\n

\u51fd\u6570\u548c\u9ad8\u9636\u51fd\u6570<\/h4>\n<\/p>\n

\u51fd\u6570\u4f5c\u4e3a\u4e00\u7b49\u516c\u6c11\u5728JavaScript\u4e2d\u5360\u6709\u4e3e\u8db3\u8f7b\u91cd\u7684\u5730\u4f4d\u3002\u7406\u89e3\u5982\u4f55\u5b9a\u4e49\u51fd\u6570\u3001\u51fd\u6570\u7684\u8c03\u7528\u3001\u53c2\u6570\u4f20\u9012\u3001\u8fd4\u56de\u503c\u4ee5\u53ca\u9ad8\u9636\u51fd\u6570\u7684\u6982\u5ff5\uff08\u5373\u51fd\u6570\u53ef\u4ee5\u4f5c\u4e3a\u53c2\u6570\u6216\u8fd4\u56de\u503c\u7684\u51fd\u6570\uff09\u662f\u5173\u952e\u3002<\/p>\n<\/p>\n

\u5f02\u6b65\u7f16\u7a0b<\/h4>\n<\/p>\n

JavaScript\u7684\u4e8b\u4ef6\u9a71\u52a8\u548c\u975e\u963b\u585e\u7279\u6027\u5bf9\u5f02\u6b65\u7f16\u7a0b\u81f3\u5173\u91cd\u8981\u3002\u638c\u63e1\u5f02\u6b65\u7f16\u7a0b\u6a21\u578b\uff0c\u5305\u62ec\u56de\u8c03\u51fd\u6570\u3001Promise\u3001async\/awAI<\/a>t\uff0c\u662fJavaScript\u8fdb\u9636\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u73af\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u719f\u6089DOM\u64cd\u4f5c<\/h3>\n<\/p>\n

DOM\u57fa\u7840<\/h4>\n<\/p>\n

Document Object Model\uff08DOM\uff09\u662fJavaScript\u4e0eHTML\u6587\u6863\u4ea4\u4e92\u7684\u6865\u6881\u3002\u5165\u95e8JavaScript\u5f88\u5927\u7a0b\u5ea6\u4e0a\u610f\u5473\u7740\u80fd\u591f\u4f7f\u7528DOM\u63d0\u4f9b\u7684API\u5b8c\u6210\u5bf9\u7f51\u9875\u5185\u5bb9\u7684\u589e\u5220\u6539\u67e5\u3002\u4e86\u89e3DOM\u6811\u7684\u7ed3\u6784\u3001\u638c\u63e1\u5982\u4f55\u9009\u53d6\u5143\u7d20\u3001\u5982\u4f55\u4fee\u6539\u5143\u7d20\u5c5e\u6027\u548c\u5185\u5bb9\u662f\u57fa\u672c\u6280\u80fd\u3002<\/p>\n<\/p>\n

\u4e8b\u4ef6\u548c\u4e8b\u4ef6\u76d1\u542c<\/h4>\n<\/p>\n

\u4e8b\u4ef6\u5904\u7406\u662f\u4e0eDOM\u4ea4\u4e91\u4f5c\u7684\u91cd\u4e2d\u4e4b\u91cd\u3002\u80fd\u591f\u4e3aDOM\u5143\u7d20\u6dfb\u52a0\u4e8b\u4ef6\u76d1\u542c\u5668\u6765\u54cd\u5e94\u7528\u6237\u52a8\u4f5c\u3001\u4e86\u89e3\u5192\u6ce1\u548c\u6355\u83b7\u4e8b\u4ef6\u4f20\u64ad\u673a\u5236\u8868\u660e\u4f60\u5df2\u7ecf\u638c\u63e1\u4e86DOM\u7f16\u7a0b\u7684\u57fa\u7840\u3002<\/p>\n<\/p>\n

\u56db\u3001\u80fd\u591f\u7f16\u5199\u57fa\u7840\u7a0b\u5e8f<\/h3>\n<\/p>\n

\u5b9e\u73b0\u57fa\u672c\u4ea4\u4e92<\/h4>\n<\/p>\n

\u80fd\u591f\u5229\u7528JavaScript\u7f16\u5199\u5982\u8868\u5355\u9a8c\u8bc1\u3001\u4e0b\u62c9\u83dc\u5355\u7b49\u57fa\u7840\u7684\u7f51\u9875\u4ea4\u4e92\u529f\u80fd\u662f\u5224\u65ad\u662f\u5426\u5165\u95e8\u7684\u4e00\u4e2a\u5b9e\u9645\u6807\u51c6\u3002\u8fd9\u4e9b\u4ea4\u4e92\u901a\u5e38\u9700\u8981\u7ed3\u5408DOM\u64cd\u4f5c\u548c\u4e8b\u4ef6\u5904\u7406\u77e5\u8bc6\u6765\u5b8c\u6210\u3002<\/p>\n<\/p>\n

\u89e3\u51b3\u95ee\u9898\u7684\u80fd\u529b<\/h4>\n<\/p>\n

\u6700\u540e\uff0c\u7f16\u7a0b\u5f88\u5927\u7a0b\u5ea6\u4e0a\u662f\u89e3\u51b3\u95ee\u9898\u7684\u8fc7\u7a0b\u3002\u4f5c\u4e3a\u5165\u95e8\u8005\uff0c\u5982\u679c\u80fd\u591f\u72ec\u7acb\u601d\u8003\u5e76\u89e3\u51b3\u4e00\u4e9b\u57fa\u7840\u7684\u7f16\u7a0b\u95ee\u9898\uff0c\u4f8b\u5982\u7b97\u6cd5\u9898\u76ee\u3001\u5b57\u7b26\u4e32\u64cd\u4f5c\u3001\u6570\u7ec4\u904d\u5386\u7b49\uff0c\u8bf4\u660e\u4f60\u7684JavaScript\u57fa\u7840\u5df2\u7ecf\u76f8\u5f53\u624e\u5b9e\u3002<\/p>\n<\/p>\n

JavaScript\u7684\u5165\u95e8\u5e76\u4e0d\u610f\u5473\u7740\u638c\u63e1\u4e86\u5168\u90e8\uff0c\u5b83\u662f\u4e00\u4e2a\u4e0d\u65ad\u5b66\u4e60\u548c\u8fdb\u6b65\u7684\u8fc7\u7a0b\u3002\u4f46\u82e5\u80fd\u591f\u505a\u5230\u4e0a\u8ff0\u51e0\u70b9\uff0c\u81f3\u5c11\u8bf4\u660e\u4f60\u5df2\u7ecf\u6709\u4e86\u4e00\u4e2a\u975e\u5e38\u597d\u7684\u5f00\u59cb\u3002<\/p>\n<\/p>\n

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

1. JavaScript\u5165\u95e8\u9700\u8981\u638c\u63e1\u54ea\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u8bed\u6cd5\uff1f<\/strong><\/p>\n

\u5165\u95e8JavaScript\u9700\u8981\u4e86\u89e3\u4e00\u4e9b\u57fa\u672c\u7684\u6982\u5ff5\u548c\u8bed\u6cd5\u3002\u9996\u5148\uff0c\u4f60\u9700\u8981\u719f\u6089\u53d8\u91cf\u3001\u6570\u636e\u7c7b\u578b\u3001\u8fd0\u7b97\u7b26\u548c\u63a7\u5236\u6d41\u8bed\u53e5\uff08\u5982if\u8bed\u53e5\u548c\u5faa\u73af\u8bed\u53e5\uff09\u3002\u6b64\u5916\uff0c\u4f60\u8fd8\u9700\u8981\u4e86\u89e3\u51fd\u6570\u7684\u5b9a\u4e49\u548c\u8c03\u7528\uff0c\u4ee5\u53ca\u5bf9\u8c61\u548c\u6570\u7ec4\u7684\u4f7f\u7528\u3002\u638c\u63e1\u8fd9\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u8bed\u6cd5\u5c06\u5e2e\u52a9\u4f60\u5f00\u59cb\u7f16\u5199\u7b80\u5355\u7684JavaScript\u4ee3\u7801\u3002<\/p>\n

2. \u6709\u54ea\u4e9b\u8d44\u6e90\u53ef\u4ee5\u5e2e\u52a9\u6211\u5165\u95e8JavaScript\uff1f<\/strong><\/p>\n

\u5982\u679c\u4f60\u60f3\u5165\u95e8JavaScript\uff0c\u6709\u5f88\u591a\u8d44\u6e90\u53ef\u4ee5\u5e2e\u52a9\u4f60\u3002\u9996\u5148\uff0c\u4f60\u53ef\u4ee5\u53c2\u8003\u5728\u7ebf\u6559\u7a0b\u548c\u6587\u6863\uff0c\u5982MDN\uff08Mozilla Developer Network\uff09\u7684JavaScript\u6559\u7a0b\u3002\u8fd9\u4e9b\u8d44\u6e90\u63d0\u4f9b\u4e86\u8be6\u7ec6\u7684\u8bf4\u660e\u548c\u793a\u4f8b\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u7406\u89e3JavaScript\u7684\u5404\u4e2a\u65b9\u9762\u3002\u6b64\u5916\uff0c\u4f60\u53ef\u4ee5\u53c2\u8003\u5404\u79cd\u4e66\u7c4d\u548c\u6559\u7a0b\uff0c\u5305\u62ec\u89c6\u9891\u6559\u7a0b\uff0c\u5728\u5b9e\u8df5\u4e2d\u5b66\u4e60\u7f16\u5199JavaScript\u4ee3\u7801\u3002<\/p>\n

3. \u5982\u4f55\u63d0\u9ad8\u6211\u7684JavaScript\u7f16\u7a0b\u6280\u80fd\uff1f<\/strong><\/p>\n

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