{"id":167186,"date":"2024-05-08T15:57:50","date_gmt":"2024-05-08T07:57:50","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/167186.html"},"modified":"2024-05-08T15:57:54","modified_gmt":"2024-05-08T07:57:54","slug":"javascript%e5%87%bd%e6%95%b0%e5%86%85%e8%b5%8b%e5%80%bc%e5%b7%a6%e8%be%b9%e5%ae%9a%e4%b9%89%e9%94%99%e5%ba%94%e8%af%a5%e5%a6%82%e4%bd%95%e6%8a%a5%e9%94%99","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/167186.html","title":{"rendered":"JavaScript\u51fd\u6570\u5185\u8d4b\u503c\u5de6\u8fb9\u5b9a\u4e49\u9519\u5e94\u8be5\u5982\u4f55\u62a5\u9519"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27033018\/0dae52f9-12fa-491d-aea4-087ca0af88bf.webp\" alt=\"JavaScript\u51fd\u6570\u5185\u8d4b\u503c\u5de6\u8fb9\u5b9a\u4e49\u9519\u5e94\u8be5\u5982\u4f55\u62a5\u9519\" \/><\/p>\n<p><p>\u5728JavaScript\u4e2d\uff0c\u5f53\u51fd\u6570\u5185\u90e8\u5728\u8d4b\u503c\u65f6\u5de6\u4fa7\u5b9a\u4e49\u51fa\u9519\uff0c\u4e3b\u8981\u8868\u73b0\u4e3a\u65e0\u6cd5\u627e\u5230\u5408\u6cd5\u7684\u53d8\u91cf\u6216\u5c5e\u6027\u6765\u8d4b\u503c\u3002\u8fd9\u901a\u5e38\u7531\u4e8e<strong>\u53d8\u91cf\u672a\u58f0\u660e\u3001\u62fc\u5199\u9519\u8bef\u3001\u4f5c\u7528\u57df\u95ee\u9898\u3001\u6216\u5c1d\u8bd5\u5728\u4e0d\u53ef\u5199\u7684\u5c5e\u6027\u4e0a\u8d4b\u503c<\/strong>\u7b49\u539f\u56e0\u9020\u6210\u3002\u4e3a\u4e86\u6709\u6548\u5730\u7ba1\u7406\u8fd9\u7c7b\u9519\u8bef\uff0c\u5f00\u53d1\u8005\u9700\u8981\u91c7\u53d6\u5305\u62ec<strong>\u4f7f\u7528\u4e25\u683c\u6a21\u5f0f\u3001\u5229\u7528linter\u5de5\u5177\u3001\u5408\u7406\u7ba1\u7406\u53d8\u91cf\u4f5c\u7528\u57df\u3001\u4ee5\u53ca\u5f7b\u5e95\u7406\u89e3JavaScript\u5f15\u64ce\u7684\u9519\u8bef\u5904\u7406\u673a\u5236<\/strong>\u7b49\u7b56\u7565\u3002<strong>\u4f7f\u7528\u4e25\u683c\u6a21\u5f0f<\/strong>\u662f\u4e00\u79cd\u6700\u76f4\u63a5\u4e14\u6709\u6548\u7684\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5730\u8bc6\u522b\u8d4b\u503c\u9519\u8bef\uff0c\u56e0\u4e3a\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u5bf9\u672a\u58f0\u660e\u7684\u53d8\u91cf\u8fdb\u884c\u8d4b\u503c\u4f1a\u76f4\u63a5\u629b\u51fa\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u542f\u7528\u4e25\u683c\u6a21\u5f0f<\/h3>\n<\/p>\n<p><p>\u5728JavaScript\u4e2d\u542f\u7528\u4e25\u683c\u6a21\u5f0f\u662f\u901a\u8fc7\u5728\u811a\u672c\u6216\u51fd\u6570\u7684\u6700\u9876\u90e8\u6dfb\u52a0 <code>&quot;use strict&quot;;<\/code> \u58f0\u660e\u5b9e\u73b0\u7684\u3002\u8fd9\u4e00\u6a21\u5f0f\u80fd\u663e\u8457\u6539\u53d8JavaScript\u4ee3\u7801\u7684\u6267\u884c\u65b9\u5f0f\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u4f7f\u672a\u58f0\u660e\u7684\u53d8\u91cf\u8d4b\u503c\u5bfc\u81f4\u8fd0\u884c\u65f6\u9519\u8bef\uff0c\u800c\u4e0d\u662f\u9ed8\u8ba4\u521b\u5efa\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf\u3002<\/p>\n<\/p>\n<ul>\n<li>\u542f\u7528\u4e25\u683c\u6a21\u5f0f\u540e\uff0c\u5982\u679c\u5c1d\u8bd5\u7ed9\u672a\u58f0\u660e\u7684\u53d8\u91cf\u8d4b\u503c\uff0cJavaScript\u5f15\u64ce\u4f1a\u629b\u51fa\u4e00\u4e2aReferenceError\uff0c\u660e\u786e\u6307\u51fa\u9519\u8bef\u7684\u6027\u8d28\u3002\u8fd9\u6bd4\u9ed8\u8ba4\u7684\u9ed8\u9ed8\u521b\u5efa\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf\u8981\u597d\u5f97\u591a\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5728\u4ee3\u7801\u521d\u671f\u5c31\u53d1\u73b0\u6f5c\u5728\u7684\u9519\u8bef\uff0c\u907f\u514d\u4e86\u53ef\u80fd\u7684\u5168\u5c40\u53d8\u91cf\u6c61\u67d3\u548c\u96be\u4ee5\u8ffd\u8e2a\u7684bug\u3002<\/li>\n<li>\u9664\u4e86\u6355\u83b7\u672a\u58f0\u660e\u53d8\u91cf\u7684\u8d4b\u503c\u9519\u8bef\uff0c\u4e25\u683c\u6a21\u5f0f\u8fd8\u6709\u5176\u4ed6\u591a\u79cd\u4f18\u52bf\uff0c\u6bd4\u5982\u7981\u6b62\u4f7f\u7528with\u8bed\u53e5\u3001\u7981\u6b62\u5220\u9664\u4e0d\u53ef\u5220\u9664\u7684\u5c5e\u6027\u7b49\uff0c\u8fd9\u4e9b\u90fd\u80fd\u5e2e\u52a9\u5f00\u53d1\u8005\u5199\u51fa\u66f4\u5b89\u5168\u3001\u66f4\u53ef\u9760\u7684\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<p><h3>\u4e8c\u3001\u5229\u7528Linter\u5de5\u5177<\/h3>\n<\/p>\n<p><p>Linter\u5de5\u5177\u5bf9\u4e8e\u8bc6\u522b\u6f5c\u5728\u7684\u9519\u8bef\u548c\u7f16\u7801\u98ce\u683c\u95ee\u9898\u975e\u5e38\u6709\u6548\u3002\u8fd9\u7c7b\u5de5\u5177\u5728\u7f16\u5199JavaScript\u4ee3\u7801\u65f6\u63d0\u4f9b\u5b9e\u65f6\u53cd\u9988\uff0c\u5305\u62ec\u53d8\u91cf\u662f\u5426\u672a\u58f0\u660e\u3001\u662f\u5426\u5b58\u5728\u62fc\u5199\u9519\u8bef\u7b49\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>ESLint<\/strong>\u662f\u76ee\u524d\u6700\u53d7\u6b22\u8fce\u7684JavaScript Linter\u4e4b\u4e00\uff0c\u5b83\u63d0\u4f9b\u4e86\u5927\u91cf\u7684\u53ef\u914d\u7f6e\u89c4\u5219\uff0c\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u96c6\u6210\u5230\u5927\u591a\u6570\u7684\u5f00\u53d1\u73af\u5883\u4e2d\u3002\u901a\u8fc7\u914d\u7f6e\u89c4\u5219\uff0cESLint\u80fd\u5e2e\u52a9\u8bc6\u522b\u51fd\u6570\u5185\u90e8\u6f5c\u5728\u7684\u8d4b\u503c\u9519\u8bef\uff0c\u6bd4\u5982\u672a\u58f0\u660e\u7684\u53d8\u91cf\u8d4b\u503c\u6216\u8005\u53d8\u91cf\u540d\u62fc\u5199\u9519\u8bef\u7b49\u3002<\/li>\n<li>\u5229\u7528ESLint\u7b49\u5de5\u5177\uff0c\u53ef\u4ee5\u5728\u4ee3\u7801\u63d0\u4ea4\u4e4b\u524d\u8bc6\u522b\u548c\u4fee\u6b63\u8fd9\u4e9b\u95ee\u9898\uff0c\u6781\u5927\u5730\u63d0\u5347\u4ee3\u7801\u8d28\u91cf\u548c\u5f00\u53d1\u6548\u7387\u3002<\/li>\n<\/ul>\n<p><h3>\u4e09\u3001\u5408\u7406\u7ba1\u7406\u53d8\u91cf\u4f5c\u7528\u57df<\/h3>\n<\/p>\n<p><p>\u7406\u89e3\u5e76\u5408\u7406\u7ba1\u7406JavaScript\u7684\u53d8\u91cf\u4f5c\u7528\u57df\u5bf9\u4e8e\u907f\u514d\u8d4b\u503c\u9519\u8bef\u81f3\u5173\u91cd\u8981\u3002JavaScript\u652f\u6301\u5757\u7ea7\u4f5c\u7528\u57df\uff08\u901a\u8fc7<code>let<\/code>\u548c<code>const<\/code>\u58f0\u660e\u7684\u53d8\u91cf\uff09\u548c\u51fd\u6570\u4f5c\u7528\u57df\uff08\u901a\u8fc7<code>var<\/code>\u58f0\u660e\u7684\u53d8\u91cf\uff09\u3002<\/p>\n<\/p>\n<ul>\n<li>\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u660e\u786e\u6bcf\u4e2a\u53d8\u91cf\u5e94\u5b58\u5728\u7684\u4f5c\u7528\u57df\uff0c\u907f\u514d\u56e0\u4f5c\u7528\u57df\u5f15\u8d77\u7684\u8d4b\u503c\u9519\u8bef\u3002\u6bd4\u5982\uff0c\u5728\u4e00\u4e2a\u51fd\u6570\u5185\u90e8\u5c1d\u8bd5\u8bbf\u95ee\u6216\u4fee\u6539\u53ea\u5728\u53e6\u4e00\u4e2a\u51fd\u6570\u5185\u58f0\u660e\u7684\u53d8\u91cf\uff0c\u8fd9\u4f1a\u5bfc\u81f4ReferenceError\u9519\u8bef\u3002<\/li>\n<li>\u5c3d\u91cf\u4f7f\u7528<code>let<\/code>\u548c<code>const<\/code>\u4ee3\u66ff<code>var<\/code>\u8fdb\u884c\u53d8\u91cf\u58f0\u660e\uff0c\u53ef\u4ee5\u66f4\u52a0\u660e\u786e\u53d8\u91cf\u7684\u4f5c\u7528\u57df\u8303\u56f4\uff0c\u4ece\u800c\u964d\u4f4e\u56e0\u4f5c\u7528\u57df\u95ee\u9898\u5bfc\u81f4\u7684\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p><h3>\u56db\u3001\u5f7b\u5e95\u7406\u89e3JavaScript\u9519\u8bef\u5904\u7406\u673a\u5236<\/h3>\n<\/p>\n<p><p>\u5f7b\u5e95\u7406\u89e3JavaScript\u7684\u9519\u8bef\u5904\u7406\u673a\u5236\u5bf9\u4e8e\u6709\u6548\u7ba1\u7406\u548c\u62a5\u9519\u540c\u6837\u91cd\u8981\u3002\u5f53\u9047\u5230\u4ee5\u4e0a\u63d0\u5230\u7684\u8d4b\u503c\u9519\u8bef\u65f6\uff0c\u5408\u7406\u5730\u5229\u7528<code>try...catch<\/code>\u8bed\u6cd5\u53ef\u4ee5\u6355\u83b7\u5e76\u5904\u7406\u8fd9\u4e9b\u9519\u8bef\uff0c\u907f\u514d\u7a0b\u5e8f\u4e2d\u65ad\u6267\u884c\u3002<\/p>\n<\/p>\n<ul>\n<li>\u901a\u8fc7<code>try...catch<\/code>\u8bed\u53e5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5bf9\u53ef\u80fd\u53d1\u751f\u9519\u8bef\u7684\u4ee3\u7801\u8fdb\u884c\u5305\u88f9\u3002\u5982\u679c\u5728<code>try<\/code>\u5757\u5185\u90e8\u53d1\u751f\u4e86\u9519\u8bef\uff0c\u63a7\u5236\u5c06\u8f6c\u79fb\u81f3\u76f8\u5e94\u7684<code>catch<\/code>\u5757\u5185\uff0c\u4ece\u800c\u5141\u8bb8\u5f00\u53d1\u8005\u8bb0\u5f55\u9519\u8bef\u4fe1\u606f\u6216\u5bf9\u9519\u8bef\u8fdb\u884c\u6062\u590d\u5904\u7406\u3002<\/li>\n<li>\u5728\u6355\u83b7\u9519\u8bef\u65f6\uff0c\u5229\u7528Error\u5bf9\u8c61\u63d0\u4f9b\u7684\u4fe1\u606f\uff08\u5982<code>name<\/code>\u3001<code>message<\/code>\uff09\uff0c\u53ef\u4ee5\u66f4\u51c6\u786e\u5730\u8bca\u65ad\u95ee\u9898\u6240\u5728\uff0c\u5bf9\u75c7\u4e0b\u836f\uff0c\u8fdb\u884c\u5b9a\u5411\u4fee\u590d\u6216\u62a5\u8b66\u5904\u7406\u3002<\/li>\n<\/ul>\n<p><p>\u4ee5\u4e0a\u7b56\u7565\u4e0d\u4ec5\u5e2e\u52a9\u5f00\u53d1\u8005\u6709\u6548\u7ba1\u7406\u51fd\u6570\u5185\u8d4b\u503c\u5de6\u4fa7\u5b9a\u4e49\u51fa\u9519\u7684\u60c5\u51b5\uff0c\u8fd8\u80fd\u63d0\u5347\u6574\u4f53\u7684\u4ee3\u7801\u8d28\u91cf\u548c\u5f00\u53d1\u6548\u7387\u3002\u901a\u8fc7\u9075\u5faa\u6700\u4f73\u5b9e\u8df5\u548c\u4e0d\u65ad\u5b66\u4e60JavaScript\u7684\u7ec6\u8282\uff0c\u53ef\u4ee5\u5927\u5927\u964d\u4f4e\u4ee3\u7801\u4e2d\u51fa\u73b0\u6b64\u7c7b\u9519\u8bef\u7684\u9891\u7387\uff0c\u4ece\u800c\u6784\u5efa\u66f4\u52a0\u5065\u58ee\u3001\u53ef\u9760\u7684\u5e94\u7528\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5728JavaScript\u51fd\u6570\u4e2d\uff0c\u5982\u679c\u5728\u8d4b\u503c\u64cd\u4f5c\u4e2d\u5de6\u8fb9\u5b9a\u4e49\u7684\u9519\u8bef\uff0c\u4f1a\u51fa\u73b0\u4ec0\u4e48\u6837\u7684\u9519\u8bef\u4fe1\u606f\uff1f<\/strong><\/p>\n<p>JavaScript\u51fd\u6570\u4e2d\uff0c\u5f53\u8d4b\u503c\u64cd\u4f5c\u4e2d\u5de6\u8fb9\u7684\u5b9a\u4e49\u51fa\u73b0\u9519\u8bef\u65f6\uff0c\u4f1a\u629b\u51fa\u4e00\u4e2a&quot;ReferenceError&quot;\u9519\u8bef\u3002\u8fd9\u610f\u5473\u7740JavaScript\u65e0\u6cd5\u627e\u5230\u88ab\u8d4b\u503c\u7684\u53d8\u91cf\u6216\u5bf9\u8c61\u3002\u5728\u9519\u8bef\u4fe1\u606f\u4e2d\uff0c\u4f1a\u6307\u793a\u51fa\u5177\u4f53\u7684\u9519\u8bef\u4f4d\u7f6e\u548c\u53d8\u91cf\u540d\u3002<\/p>\n<p><strong>2. \u54ea\u4e9b\u56e0\u7d20\u53ef\u80fd\u5bfc\u81f4JavaScript\u51fd\u6570\u4e2d\u8d4b\u503c\u64cd\u4f5c\u65f6\u5de6\u8fb9\u5b9a\u4e49\u51fa\u9519\uff1f<\/strong><\/p>\n<p>\u5728JavaScript\u51fd\u6570\u4e2d\uff0c\u6709\u51e0\u79cd\u53ef\u80fd\u5bfc\u81f4\u8d4b\u503c\u64cd\u4f5c\u5de6\u8fb9\u5b9a\u4e49\u9519\u8bef\u7684\u60c5\u51b5\u3002\u5176\u4e2d\u5305\u62ec\uff1a\u53d8\u91cf\u540d\u62fc\u5199\u9519\u8bef\u3001\u672a\u58f0\u660e\u7684\u53d8\u91cf\u3001\u53d8\u91cf\u4f5c\u7528\u57df\u95ee\u9898\u3001\u4f7f\u7528\u9017\u53f7\u8fde\u63a5\u7684\u591a\u4e2a\u53d8\u91cf\u540d\u3001\u4ee5\u53ca\u5c1d\u8bd5\u66f4\u6539\u5e38\u91cf\u7b49\u3002<\/p>\n<p><strong>3. 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