{"id":165748,"date":"2024-05-08T15:22:18","date_gmt":"2024-05-08T07:22:18","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/165748.html"},"modified":"2024-05-08T15:22:22","modified_gmt":"2024-05-08T07:22:22","slug":"javascript%e4%b8%ad%e6%9c%aa%e5%a3%b0%e6%98%8e%e5%8f%98%e9%87%8f%e7%9a%84%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/165748.html","title":{"rendered":"javascript\u4e2d\u672a\u58f0\u660e\u53d8\u91cf\u7684\u95ee\u9898"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26232800\/9ffdfec6-dc58-4440-95ff-ae83ff1b9c27.webp\" alt=\"javascript\u4e2d\u672a\u58f0\u660e\u53d8\u91cf\u7684\u95ee\u9898\" \/><\/p>\n<p><p>JavaScript\u4e2d\u672a\u58f0\u660e\u53d8\u91cf\u7684\u95ee\u9898\u53ef\u80fd\u5bfc\u81f4\u7a0b\u5e8f\u8fd0\u884c\u51fa\u73b0\u9519\u8bef\u3001\u5168\u5c40\u6c61\u67d3\u548c\u53ef\u7ef4\u62a4\u6027\u964d\u4f4e\u3002\u7279\u522b\u662f\uff0c\u5728\u4e25\u683c\u6a21\u5f0f\u4e0b\uff0c\u5bf9\u672a\u58f0\u660e\u7684\u53d8\u91cf\u8d4b\u503c\u4f1a\u629b\u51fa\u9519\u8bef\uff0c\u56e0\u4e3aJavaScript\u5f15\u64ce\u4f1a\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u5df2\u7ecf\u88ab\u58f0\u660e\u3002<strong>\u9664\u4e86\u907f\u514d\u5168\u5c40\u6c61\u67d3\u548c\u9519\u8bef<\/strong>\uff0c\u4f7f\u7528\u4e25\u683c\u6a21\u5f0f\u8fd8\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u8fd0\u884c\u6548\u7387\u3002\u5728\u7f16\u5199\u4ee3\u7801\u65f6\uff0c\u5e94\u59cb\u7ec8\u58f0\u660e\u53d8\u91cf\u4ee5\u907f\u514d\u8fd9\u4e9b\u95ee\u9898\uff0c\u540c\u65f6\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u4e5f\u4f1a\u5f97\u5230\u63d0\u5347\u3002<\/p>\n<\/p>\n<p><p>\u4e3a\u4e86\u66f4\u6df1\u5165\u5730\u7406\u89e3\u4f7f\u7528\u672a\u58f0\u660e\u53d8\u91cf\u53ef\u80fd\u5bfc\u81f4\u7684\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u63a2\u8ba8\u5176\u5bf9\u5168\u5c40\u53d8\u91cf\u4f5c\u7528\u57df\u7684\u5f71\u54cd\u3002\u6ca1\u6709\u4f7f\u7528<code>var<\/code>\u3001<code>let<\/code>\u6216<code>const<\/code>\u5173\u952e\u5b57\u58f0\u660e\u7684\u53d8\u91cf\u81ea\u52a8\u6210\u4e3a\u5168\u5c40\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u8fd9\u4f1a\u6c61\u67d3\u5168\u5c40\u547d\u540d\u7a7a\u95f4\uff0c\u589e\u52a0\u4e0d\u540c\u811a\u672c\u95f4\u53d8\u91cf\u51b2\u7a81\u7684\u53ef\u80fd\u6027\u3002\u5728\u5927\u578b\u7684\u6216\u8005\u591a\u4eba\u5408\u4f5c\u7684\u9879\u76ee\u4e2d\uff0c\u5168\u5c40\u53d8\u91cf\u6c61\u67d3\u4f1a\u5bfc\u81f4\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u5927\u5927\u4e0b\u964d\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u53d8\u91cf\u4f5c\u7528\u57df\u4e0e\u6c61\u67d3<\/p>\n<\/p>\n<p><p>JavaScript\u4e2d\u7684\u4f5c\u7528\u57df\u5b9a\u4e49\u4e86\u53d8\u91cf\u7684\u53ef\u8bbf\u95ee\u8303\u56f4\u3002\u5728\u6ca1\u6709\u4f7f\u7528<code>var<\/code>\u3001<code>let<\/code>\u6216<code>const<\/code>\u58f0\u660e\u53d8\u91cf\u7684\u60c5\u51b5\u4e0b\uff0c\u53d8\u91cf\u9ed8\u8ba4\u6210\u4e3a\u5168\u5c40\u5bf9\u8c61\u7684\u5c5e\u6027\u3002<\/p>\n<\/p>\n<p><p><strong>\u5168\u5c40\u53d8\u91cf\u7684\u95ee\u9898<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u5728\u4efb\u4f55\u5730\u65b9\u90fd\u80fd\u8bbf\u95ee\u5230\u5168\u5c40\u53d8\u91cf\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u4e00\u4e9b\u8bef\u64cd\u4f5c\uff0c\u4f8b\u5982\u65e0\u610f\u4e2d\u4fee\u6539\u4e86\u67d0\u4e2a\u5168\u5c40\u53d8\u91cf\u3002<\/li>\n<li>\u5982\u679c\u591a\u6bb5\u4ee3\u7801\u4f7f\u7528\u4e86\u540c\u540d\u7684\u5168\u5c40\u53d8\u91cf\uff0c\u53ef\u80fd\u4f1a\u53d1\u751f\u51b2\u7a81\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u610f\u6599\u4e4b\u5916\u7684\u884c\u4e3a\u3002<\/li>\n<li>\u8c03\u8bd5\u65f6\u8ffd\u8e2a\u5168\u5c40\u53d8\u91cf\u7684\u6765\u6e90\u6bd4\u5c40\u90e8\u53d8\u91cf\u56f0\u96be\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u5728\u4ee3\u7801\u7684\u4efb\u4f55\u5730\u65b9\u88ab\u4fee\u6539\u3002<\/li>\n<\/ul>\n<p><p><strong>\u5c40\u90e8\u53d8\u91cf\u548c\u5757\u7ea7\u4f5c\u7528\u57df<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u4f7f\u7528<code>var<\/code>\u58f0\u660e\u7684\u53d8\u91cf\u5177\u6709\u51fd\u6570\u4f5c\u7528\u57df\uff0c\u53ea\u5728\u58f0\u660e\u5b83\u7684\u51fd\u6570\u5185\u90e8\u53ef\u89c1\u3002<\/li>\n<li><code>let<\/code>\u548c<code>const<\/code>\u662fES6\u7684\u65b0\u7279\u6027\uff0c\u5b83\u4eec\u63d0\u4f9b\u5757\u7ea7\u4f5c\u7528\u57df\uff08<code>{}<\/code>\u5185\u90e8\uff09\uff0c\u9650\u5236\u53d8\u91cf\u7684\u8bbf\u95ee\u8303\u56f4\uff0c\u589e\u5f3a\u4ee3\u7801\u7684\u5b89\u5168\u6027\u548c\u53ef\u8bfb\u6027\u3002<\/li>\n<\/ul>\n<p><p>\u4e8c\u3001\u4e25\u683c\u6a21\u5f0f\u7684\u597d\u5904<\/p>\n<\/p>\n<p><p>\u4e25\u683c\u6a21\u5f0f\uff08<code>use strict<\/code>\uff09\u662f\u4e00\u79cd\u53ef\u9009\u7684\u9650\u5236\u6027\u8f83\u5f3a\u7684JavaScript\u53d8\u4f53\u3002\u542f\u7528\u4e25\u683c\u6a21\u5f0f\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u907f\u514d\u4e00\u4e9b\u6f5c\u5728\u7684\u9677\u9631\u3002<\/p>\n<\/p>\n<p><p><strong>\u907f\u514d\u610f\u5916\u7684\u5168\u5c40\u53d8\u91cf<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u5728\u4e25\u683c\u6a21\u5f0f\u4e2d\uff0c\u5982\u679c\u4f60\u8bd5\u56fe\u8d4b\u503c\u7ed9\u672a\u58f0\u660e\u7684\u53d8\u91cf\uff0cJavaScript\u4f1a\u629b\u51fa\u9519\u8bef\uff0c\u4ece\u800c\u5e2e\u52a9\u4f60\u53ca\u65e9\u53d1\u73b0\u95ee\u9898\u3002<\/li>\n<li>\u4e25\u683c\u6a21\u5f0f\u8981\u6c42\u6240\u6709\u53d8\u91cf\u5fc5\u987b\u5148\u58f0\u660e\u540e\u4f7f\u7528\uff0c\u8fd9\u5f3a\u5236\u5f00\u53d1\u8005\u7f16\u5199\u66f4\u5b89\u5168\u3001\u66f4\u6613\u4e8e\u7ef4\u62a4\u7684\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<p><p><strong>\u6d88\u9664this\u7684\u9690\u60a3<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u5728\u4e25\u683c\u6a21\u5f0f\u4e2d\uff0c\u5982\u679c\u6ca1\u6709\u660e\u786e\u6307\u5b9a\u4e0a\u4e0b\u6587\u5bf9\u8c61\uff0c\u51fd\u6570\u5185\u7684<code>this<\/code>\u5c06\u662f<code>undefined<\/code>\uff0c\u4ece\u800c\u907f\u514d\u4e86\u5168\u5c40\u5bf9\u8c61\u88ab\u610f\u5916\u4fee\u6539\u7684\u98ce\u9669\u3002<\/li>\n<\/ul>\n<p><p>\u4e09\u3001\u53d8\u91cf\u63d0\u5347<\/p>\n<\/p>\n<p><p>\u5728JavaScript\u4e2d\uff0c\u53d8\u91cf\u63d0\u5347\u662f\u6307\u53d8\u91cf\u548c\u51fd\u6570\u58f0\u660e\u5728\u4ee3\u7801\u6267\u884c\u524d\u5c31\u88ab\u63d0\u5347\u5230\u5b83\u4eec\u4f5c\u7528\u57df\u7684\u6700\u9876\u7aef\u3002<\/p>\n<\/p>\n<p><p><strong>var\u7684\u53d8\u91cf\u63d0\u5347<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u4f7f\u7528<code>var<\/code>\u5173\u952e\u5b57\u58f0\u660e\u7684\u53d8\u91cf\uff0c\u65e0\u8bba\u5b9e\u9645\u4e0a\u5b83\u5728\u4ee3\u7801\u4e2d\u7684\u4f4d\u7f6e\u5982\u4f55\uff0c\u90fd\u4f1a\u88ab\u63d0\u5347\u5230\u4f5c\u7528\u57df\u7684\u9876\u7aef\u3002<\/li>\n<li>\u8fd9\u53ef\u80fd\u5bfc\u81f4\u5f00\u53d1\u8005\u8ba4\u4e3a\u53d8\u91cf\u5c1a\u672a\u58f0\u660e\uff0c\u5b9e\u9645\u4e0a\u5b83\u5df2\u88ab\u63d0\u5347\u5e76\u53d6\u9ed8\u8ba4\u503c<code>undefined<\/code>\u3002<\/li>\n<\/ul>\n<p><p><strong>let\u548cconst<\/strong><\/p>\n<\/p>\n<ul>\n<li><code>let<\/code>\u548c<code>const<\/code>\u58f0\u660e\u7684\u53d8\u91cf\u4e0d\u4f1a\u88ab\u63d0\u5347\u5230\u4f5c\u7528\u57df\u9876\u7aef\u3002<\/li>\n<li>\u8fd9\u610f\u5473\u7740\u5728\u58f0\u660e\u4e4b\u524d\u4f7f\u7528\u8fd9\u4e9b\u53d8\u91cf\u4f1a\u5bfc\u81f4\u5f15\u7528\u9519\u8bef\uff0c\u4ece\u800c\u6709\u52a9\u4e8e\u6355\u6349\u6f5c\u5728\u7684bug\u3002<\/li>\n<\/ul>\n<p><p>\u56db\u3001\u7f16\u7801\u6700\u4f73\u5b9e\u8df5<\/p>\n<\/p>\n<p><p>\u4e3a\u4e86\u907f\u514dJavaScript\u4e2d\u672a\u58f0\u660e\u53d8\u91cf\u7684\u95ee\u9898\uff0c\u6211\u4eec\u5e94\u5f53\u9075\u5faa\u4e00\u4e9b\u7f16\u7801\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<\/p>\n<p><p><strong>\u603b\u662f\u58f0\u660e\u53d8\u91cf<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u5728\u4f7f\u7528\u53d8\u91cf\u4e4b\u524d\uff0c\u603b\u662f\u663e\u5f0f\u58f0\u660e\u5b83\u3002<\/li>\n<li>\u4f7f\u7528<code>let<\/code>\u6216<code>const<\/code>\u6765\u58f0\u660e\u53d8\u91cf\uff0c\u8fd9\u6837\u4f60\u53ef\u4ee5\u5229\u7528\u5757\u4f5c\u7528\u57df\u7684\u7279\u6027\uff0c\u9632\u6b62\u53d8\u91cf\u63d0\u5347\u5bfc\u81f4\u7684\u95ee\u9898\u3002<\/li>\n<\/ul>\n<p><p><strong>\u907f\u514d\u5168\u5c40\u53d8\u91cf<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u5c3d\u91cf\u907f\u514d\u521b\u5efa\u5168\u5c40\u53d8\u91cf\u3002<\/li>\n<li>\u5982\u679c\u5fc5\u987b\u8981\u7528\u5230\u5168\u5c40\u53d8\u91cf\uff0c\u786e\u4fdd\u5b83\u4eec\u7684\u547d\u540d\u72ec\u7279\u4e14\u6613\u4e8e\u8bc6\u522b\uff0c\u51cf\u5c11\u547d\u540d\u51b2\u7a81\u7684\u98ce\u9669\u3002<\/li>\n<\/ul>\n<p><p><strong>\u51fd\u6570\u548c\u5757\u7ea7\u4f5c\u7528\u57df<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u5c3d\u53ef\u80fd\u4f7f\u7528\u51fd\u6570\u4f5c\u7528\u57df\u6216\u5757\u7ea7\u4f5c\u7528\u57df\u6765\u9650\u5236\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u3002<\/li>\n<li>\u8fd9\u6837\uff0c\u5f53\u4ee3\u7801\u5757\u6267\u884c\u5b8c\u6210\u540e\uff0c\u53d8\u91cf\u5c31\u4f1a\u88ab\u9500\u6bc1\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u4ee5\u53ca\u7531\u4e8e\u610f\u5916\u5168\u5c40\u53d8\u91cf\u800c\u5bfc\u81f4\u7684\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p><p><strong>\u4f7f\u7528\u4e25\u683c\u6a21\u5f0f<\/strong><\/p>\n<\/p>\n<ul>\n<li>\u5728\u4f60\u7684JavaScript\u6587\u4ef6\u6216\u51fd\u6570\u9876\u90e8\u6dfb\u52a0<code>&#039;use strict&#039;;<\/code>\u6765\u542f\u7528\u4e25\u683c\u6a21\u5f0f\u3002<\/li>\n<li>\u4e25\u683c\u6a21\u5f0f\u5c06\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7ba1\u7406\u4f5c\u7528\u57df\uff0c\u5e76\u9632\u6b62\u4e0d\u5b89\u5168\u7684\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<p><p>JavaScript\u4e2d\u5bf9\u672a\u58f0\u660e\u53d8\u91cf\u7684\u5904\u7406\u662f\u8fd9\u95e8\u8bed\u8a00\u72ec\u7279\u7684\u7279\u6027\u4e4b\u4e00\uff0c\u7406\u89e3\u5e76\u907f\u514d\u8fd9\u7c7b\u95ee\u9898\u662f\u7f16\u5199\u5065\u58ee\u3001\u5b89\u5168\u548c\u53ef\u7ef4\u62a4\u4ee3\u7801\u7684\u5173\u952e\u6240\u5728\u3002\u968f\u7740\u73b0\u4ee3JavaScript\u7684\u53d1\u5c55\uff0c\u65b0\u7684\u53d8\u91cf\u58f0\u660e\u5173\u952e\u5b57<code>let<\/code>\u548c<code>const<\/code>\uff0c\u4ee5\u53ca\u4e25\u683c\u6a21\u5f0f\u7684\u5e7f\u6cdb\u4f7f\u7528\uff0c\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u5de5\u5177\u6765\u5e2e\u52a9\u6211\u4eec\u907f\u514d\u8fd9\u4e9b\u95ee\u9898\u3002\u5728\u7f16\u7801\u5b9e\u8df5\u4e2d\uff0c\u7262\u8bb0\u8fd9\u4e9b\u539f\u5219\uff0c\u5e76\u5e7f\u6cdb\u5e94\u7528\u5b83\u4eec\uff0c\u5c06\u6709\u52a9\u4e8e\u63d0\u5347\u6211\u4eec\u4ee3\u7801\u7684\u6574\u4f53\u8d28\u91cf\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u4e3a\u4ec0\u4e48\u5728JavaScript\u4e2d\u5fc5\u987b\u58f0\u660e\u53d8\u91cf\uff1f<\/strong><\/p>\n<p>\u5728JavaScript\u4e2d\uff0c\u58f0\u660e\u53d8\u91cf\u662f\u4e00\u79cd\u826f\u597d\u7684\u7f16\u7a0b\u5b9e\u8df5\uff0c\u5b83\u6709\u52a9\u4e8e\u786e\u4fdd\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u58f0\u660e\u53d8\u91cf\u610f\u5473\u7740\u4f60\u5728\u4f7f\u7528\u4e4b\u524d\u5148\u5b9a\u4e49\u4e86\u53d8\u91cf\u7684\u540d\u79f0\u548c\u7c7b\u578b\uff0c\u8fd9\u6837\u53ef\u4ee5\u9632\u6b62\u610f\u5916\u7684\u9519\u8bef\u548c\u6df7\u6dc6\u3002\u5982\u679c\u4f60\u5728\u4f7f\u7528\u53d8\u91cf\u4e4b\u524d\u6ca1\u6709\u58f0\u660e\u5b83\uff0cJavaScript\u4f1a\u628a\u5b83\u5f53\u4f5c\u5168\u5c40\u53d8\u91cf\u5904\u7406\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u547d\u540d\u51b2\u7a81\u548c\u4e0d\u53ef\u9884\u6d4b\u7684\u884c\u4e3a\u3002<\/p>\n<p><strong>2. \u5f53\u6211\u5728JavaScript\u4e2d\u4f7f\u7528\u672a\u58f0\u660e\u7684\u53d8\u91cf\u65f6\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/strong><\/p>\n<p>\u5982\u679c\u4f60\u5728JavaScript\u4e2d\u4f7f\u7528\u672a\u58f0\u660e\u7684\u53d8\u91cf\uff0cJavaScript\u89e3\u91ca\u5668\u4f1a\u81ea\u52a8\u5c06\u5176\u89c6\u4e3a\u5168\u5c40\u53d8\u91cf\u3002\u8fd9\u53ef\u80fd\u5bfc\u81f4\u4e00\u4e9b\u95ee\u9898\uff0c\u5c24\u5176\u662f\u5728\u591a\u4eba\u5408\u4f5c\u6216\u5927\u578b\u9879\u76ee\u4e2d\u3002\u5982\u679c\u591a\u4e2a\u5f00\u53d1\u8005\u4f7f\u7528\u76f8\u540c\u7684\u53d8\u91cf\u540d\u79f0\uff0c\u4f46\u610f\u56fe\u4e0d\u540c\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u547d\u540d\u51b2\u7a81\u548c\u9519\u8bef\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u672a\u58f0\u660e\u7684\u53d8\u91cf\u4e5f\u4f1a\u7ed9\u4ee3\u7801\u7684\u7ef4\u62a4\u548c\u8c03\u8bd5\u5e26\u6765\u56f0\u96be\uff0c\u56e0\u4e3a\u4f60\u9700\u8981\u8ffd\u8e2a\u4ee3\u7801\u4e2d\u4f7f\u7528\u7684\u6240\u6709\u53d8\u91cf\u3002<\/p>\n<p><strong>3. \u6211\u5982\u4f55\u9632\u6b62\u5728JavaScript\u4e2d\u4f7f\u7528\u672a\u58f0\u660e\u7684\u53d8\u91cf\uff1f<\/strong><\/p>\n<p>\u4e3a\u4e86\u9632\u6b62\u5728JavaScript\u4e2d\u4f7f\u7528\u672a\u58f0\u660e\u7684\u53d8\u91cf\uff0c\u4f60\u53ef\u4ee5\u59cb\u7ec8\u4f7f\u7528var\u3001let\u6216const\u5173\u952e\u5b57\u6765\u58f0\u660e\u53d8\u91cf\u3002\u8fd9\u6837\u53ef\u4ee5\u660e\u786e\u5730\u544a\u8bc9JavaScript\u89e3\u91ca\u5668\u4f60\u6b63\u5728\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5c40\u90e8\u53d8\u91cf\u3002\u6b64\u5916\uff0c\u542f\u7528\u4e25\u683c\u6a21\u5f0f\u4e5f\u662f\u4e00\u79cd\u826f\u597d\u7684\u5b9e\u8df5\uff0c\u5b83\u4f1a\u5f3a\u5236\u6267\u884c\u66f4\u4e25\u683c\u7684\u53d8\u91cf\u58f0\u660e\u89c4\u5219\uff0c\u4ee5\u51cf\u5c11\u5f00\u53d1\u4e2d\u7684\u9519\u8bef\u3002\u6700\u91cd\u8981\u7684\u662f\uff0c\u517b\u6210\u826f\u597d\u7684\u7f16\u7a0b\u4e60\u60ef\uff0c\u59cb\u7ec8\u58f0\u660e\u53d8\u91cf\u5e76\u7ed9\u4e88\u5176\u6709\u610f\u4e49\u7684\u540d\u79f0\uff0c\u8fd9\u5c06\u4f7f\u4f60\u7684\u4ee3\u7801\u66f4\u6613\u8bfb\u3001\u6613\u61c2\u548c\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"JavaScript\u4e2d\u672a\u58f0\u660e\u53d8\u91cf\u7684\u95ee\u9898\u53ef\u80fd\u5bfc\u81f4\u7a0b\u5e8f\u8fd0\u884c\u51fa\u73b0\u9519\u8bef\u3001\u5168\u5c40\u6c61\u67d3\u548c\u53ef\u7ef4\u62a4\u6027\u964d\u4f4e\u3002\u7279\u522b\u662f\uff0c\u5728\u4e25\u683c\u6a21\u5f0f\u4e0b\uff0c 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