{"id":161568,"date":"2024-05-08T13:54:22","date_gmt":"2024-05-08T05:54:22","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/161568.html"},"modified":"2024-05-08T13:54:29","modified_gmt":"2024-05-08T05:54:29","slug":"%e5%85%b3%e4%ba%8ejavascript%e4%b8%ad%e5%a3%b0%e6%98%8e%e5%8f%98%e9%87%8f%e4%b8%8d%e6%b1%a1%e6%9f%93%e5%85%a8%e5%b1%80%e7%8e%af%e5%a2%83%e7%9a%84%e5%9b%b0%e6%83%91","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/161568.html","title":{"rendered":"\u5173\u4e8eJavascript\u4e2d\u58f0\u660e\u53d8\u91cf\u4e0d\u6c61\u67d3\u5168\u5c40\u73af\u5883\u7684\u56f0\u60d1"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26224236\/4ba94dea-2859-4290-a3d0-8e44bba0096d.webp\" alt=\"\u5173\u4e8eJavascript\u4e2d\u58f0\u660e\u53d8\u91cf\u4e0d\u6c61\u67d3\u5168\u5c40\u73af\u5883\u7684\u56f0\u60d1\" \/><\/p>\n<p><p>\u8981\u5728JavaScript\u4e2d\u58f0\u660e\u53d8\u91cf\u800c\u4e0d\u6c61\u67d3\u5168\u5c40\u73af\u5883\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e3b\u8981\u7b56\u7565\u6765\u5b9e\u73b0\uff1a<strong>\u4f7f\u7528\u5c40\u90e8\u4f5c\u7528\u57df\u3001\u5229\u7528\u7acb\u5373\u6267\u884c\u51fd\u6570\u8868\u8fbe\u5f0f\uff08IIFE\uff09\u3001\u91c7\u7528ES6\u5f15\u5165\u7684let\u548cconst\u5173\u952e\u5b57\u3001\u6a21\u5757\u5316\u7f16\u7a0b<\/strong>\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u907f\u514d\u4e86\u5168\u5c40\u4f5c\u7528\u57df\u7684\u6c61\u67d3\uff0c\u786e\u4fdd\u53d8\u91cf\u53ea\u5728\u6240\u9700\u7684\u4f5c\u7528\u57df\u5185\u53ef\u89c1\u3002<\/p>\n<\/p>\n<p><p>\u5229\u7528\u7acb\u5373\u6267\u884c\u51fd\u6570\u8868\u8fbe\u5f0f\uff08IIFE\uff09\u662f\u4e00\u79cd\u5e38\u89c1\u4e14\u6709\u6548\u7684\u7b56\u7565\u3002IIFE\u662f\u4e00\u4e2a\u5b9a\u4e49\u540e\u7acb\u5373\u6267\u884c\u7684\u51fd\u6570\uff0c\u5b83\u521b\u5efa\u4e86\u4e00\u4e2a\u5c01\u95ed\u7684\u4f5c\u7528\u57df\uff0c\u5e2e\u52a9\u907f\u514d\u53d8\u91cf\u6cc4\u9732\u5230\u5168\u5c40\u4f5c\u7528\u57df\u3002\u901a\u8fc7\u5c06\u53d8\u91cf\u58f0\u660e\u5728\u8fd9\u6837\u7684\u51fd\u6570\u5185\uff0c\u53ef\u4ee5\u907f\u514d\u5bf9\u5168\u5c40\u4f5c\u7528\u57df\u7684\u6c61\u67d3\uff0c\u540c\u65f6\u8fd8\u80fd\u7ec4\u7ec7\u4ee3\u7801\u3001\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528\u5c40\u90e8\u4f5c\u7528\u57df<\/h3>\n<\/p>\n<p><p>JavaScript\u4e2d\u7684\u5c40\u90e8\u4f5c\u7528\u57df\u901a\u5e38\u901a\u8fc7\u51fd\u6570\u6765\u521b\u5efa\u3002\u5f53\u5728\u51fd\u6570\u5185\u58f0\u660e\u53d8\u91cf\u65f6\uff0c\u8fd9\u4e9b\u53d8\u91cf\u53ea\u80fd\u5728\u51fd\u6570\u4f53\u5185\u8bbf\u95ee\uff0c\u5bf9\u5168\u5c40\u4f5c\u7528\u57df\u6ca1\u6709\u5f71\u54cd\u3002\u8fd9\u662f\u56e0\u4e3aJavaScript\u4f7f\u7528\u8bcd\u6cd5\u4f5c\u7528\u57df\u6216\u9759\u6001\u4f5c\u7528\u57df\uff0c\u610f\u5473\u7740\u51fd\u6570\u7684\u4f5c\u7528\u57df\u5728\u51fd\u6570\u5b9a\u4e49\u65f6\u5c31\u51b3\u5b9a\u4e86\u3002<\/p>\n<\/p>\n<ul>\n<li>\u5c40\u90e8\u4f5c\u7528\u57df\u7684\u597d\u5904\u5305\u62ec\u9650\u5236\u53d8\u91cf\u7684\u53ef\u89c1\u6027\u548c\u751f\u547d\u5468\u671f\uff0c\u6709\u52a9\u4e8e\u51cf\u5c11\u540d\u79f0\u51b2\u7a81\u5e76\u63d0\u9ad8\u7a0b\u5e8f\u7684\u53ef\u8bfb\u6027\u4e0e\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n<li>\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\uff0c\u63a8\u8350\u5c3d\u53ef\u80fd\u4f7f\u7528\u5c40\u90e8\u4f5c\u7528\u57df\u6765\u58f0\u660e\u53d8\u91cf\uff0c\u7279\u522b\u662f\u5728\u5199\u5faa\u73af\u6216\u6761\u4ef6\u5224\u65ad\u65f6\uff0c\u907f\u514d\u65e0\u610f\u4e2d\u6539\u53d8\u6216\u4f7f\u7528\u5168\u5c40\u53d8\u91cf\u3002<\/li>\n<\/ul>\n<p><h3>\u4e8c\u3001\u5229\u7528\u7acb\u5373\u6267\u884c\u51fd\u6570\u8868\u8fbe\u5f0f\uff08IIFE\uff09<\/h3>\n<\/p>\n<p><p>\u7acb\u5373\u6267\u884c\u51fd\u6570\u8868\u8fbe\u5f0f\uff08IIFE\uff09\u662f\u4e00\u4e2a\u5728\u5b9a\u4e49\u540e\u7acb\u5373\u88ab\u8c03\u7528\u7684\u51fd\u6570\u3002\u5b83\u80fd\u521b\u5efa\u4e00\u4e2a\u72ec\u7acb\u7684\u4f5c\u7528\u57df\uff0c\u6b64\u4f5c\u7528\u57df\u4e2d\u7684\u4efb\u4f55\u53d8\u91cf\u6216\u51fd\u6570\u90fd\u4e0d\u4f1a\u6c61\u67d3\u5168\u5c40\u4f5c\u7528\u57df\u3002<\/p>\n<\/p>\n<ul>\n<li>IIFE\u901a\u5e38\u5199\u6cd5\u662f\uff1a<code>(function(){ \/* \u4ee3\u7801 *\/ })();<\/code>\uff0c\u5b83\u5c06\u51fd\u6570\u58f0\u660e\u5305\u88f9\u5728\u62ec\u53f7\u4e2d\uff0c\u5e76\u5728\u540e\u9762\u7d27\u8ddf\u4e00\u5bf9\u8c03\u7528\u7684\u62ec\u53f7\uff0c\u8868\u793a\u8fd9\u4e2a\u51fd\u6570\u5e94\u8be5\u7acb\u5373\u6267\u884c\u3002<\/li>\n<li>\u4f7f\u7528IIFE\u7684\u4e3b\u8981\u4f18\u70b9\u662f\u53ef\u4ee5\u5b89\u5168\u5730\u5c01\u88c5\u53d8\u91cf\u548c\u51fd\u6570\uff0c\u907f\u514d\u5168\u5c40\u6c61\u67d3\u3002\u5b83\u4eec\u5728\u811a\u672c\u548c\u5e93\u7684\u5c01\u88c5\u4e2d\u7279\u522b\u6709\u7528\uff0c\u786e\u4fdd\u4e86\u5185\u90e8\u5b9e\u73b0\u7684\u9690\u79c1\u6027\u3002<\/li>\n<\/ul>\n<p><h3>\u4e09\u3001\u91c7\u7528ES6\u5f15\u5165\u7684let\u548cconst\u5173\u952e\u5b57<\/h3>\n<\/p>\n<p><p>ES6\u6807\u51c6\u5f15\u5165\u4e86<code>let<\/code>\u548c<code>const<\/code>\u4e24\u4e2a\u5173\u952e\u5b57\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u5757\u4f5c\u7528\u57df\u5185\u58f0\u660e\u53d8\u91cf\uff0c\u8fd9\u6bd4\u4f20\u7edf\u7684<code>var<\/code>\u5173\u952e\u5b57\u63d0\u4f9b\u4e86\u66f4\u52a0\u7cbe\u786e\u7684\u4f5c\u7528\u57df\u63a7\u5236\u3002<\/p>\n<\/p>\n<ul>\n<li>\u4f7f\u7528<code>let<\/code>\u58f0\u660e\u7684\u53d8\u91cf\u4ec5\u5728\u58f0\u660e\u5b83\u4eec\u7684\u5757\u3001\u8bed\u53e5\u6216\u8868\u8fbe\u5f0f\u4e2d\u6709\u6548\u3002\u8fd9\u6709\u52a9\u4e8e\u51cf\u5c11\u8fd0\u884c\u65f6\u9519\u8bef\uff0c\u7279\u522b\u662f\u5728\u5faa\u73af\u4e2d\u4f7f\u7528\u65f6\u3002<\/li>\n<li><code>const<\/code>\u7528\u4e8e\u58f0\u660e\u5e38\u91cf\uff0c\u610f\u5473\u7740\u4e00\u65e6\u8d4b\u503c\u540e\u5c31\u4e0d\u80fd\u66f4\u6539\u3002\u4f7f\u7528<code>const<\/code>\u53ef\u4ee5\u9632\u6b62\u53d8\u91cf\u88ab\u610f\u5916\u6539\u53d8\uff0c\u540c\u65f6\u4e5f\u80fd\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u8fd0\u884c\u6548\u7387\u3002<\/li>\n<\/ul>\n<p><h3>\u56db\u3001\u6a21\u5757\u5316\u7f16\u7a0b<\/h3>\n<\/p>\n<p><p>\u6a21\u5757\u5316\u7f16\u7a0b\u662f\u6307\u5c06\u5927\u578b\u7a0b\u5e8f\u5206\u89e3\u6210\u4e92\u76f8\u72ec\u7acb\u7684\u5c0f\u5757\u8fdb\u884c\u5f00\u53d1\u3002\u6bcf\u4e00\u4e2a\u6a21\u5757\u90fd\u6709\u81ea\u5df1\u7684\u4f5c\u7528\u57df\uff0c\u6a21\u5757\u5185\u90e8\u7684\u53d8\u91cf\u548c\u51fd\u6570\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5728\u6a21\u5757\u5916\u90e8\u662f\u4e0d\u53ef\u8bbf\u95ee\u7684\u3002<\/p>\n<\/p>\n<ul>\n<li>\u6a21\u5757\u5316\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u7ec4\u7ec7\u548c\u7ba1\u7406\u4ee3\u7801\uff0c\u907f\u514d\u5168\u5c40\u4f5c\u7528\u57df\u6c61\u67d3\u3002<\/li>\n<li>\u5728JavaScript\u4e2d\uff0c\u53ef\u4ee5\u5229\u7528ES6\u6a21\u5757\uff08<code>import\/export<\/code>\uff09\u6216CommonJS\uff08<code>require\/module.exports<\/code>\uff09\u7b49\u6280\u672f\u6765\u5b9e\u73b0\u6a21\u5757\u5316\u7f16\u7a0b\u3002<\/li>\n<\/ul>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6709\u6548\u907f\u514dJavaScript\u4ee3\u7801\u6c61\u67d3\u5168\u5c40\u73af\u5883\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u8d28\u91cf\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u5c3d\u7ba1\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u7279\u70b9\u548c\u9002\u7528\u573a\u666f\uff0c\u4f46\u5728\u5b9e\u8df5\u4e2d\uff0c\u901a\u5e38\u4f1a\u7ed3\u5408\u4f7f\u7528\u5b83\u4eec\uff0c\u4ee5\u8fbe\u5230\u6700\u4f73\u7684\u6548\u679c\u3002\u638c\u63e1\u8fd9\u4e9b\u6280\u5de7\uff0c\u5bf9\u4e8e\u4efb\u4f55\u5e0c\u671b\u7f16\u5199\u5e72\u51c0\u3001\u53ef\u7ef4\u62a4\u548c\u9ad8\u8d28\u91cfJavaScript\u4ee3\u7801\u7684\u5f00\u53d1\u8005\u90fd\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u58f0\u660e\u53d8\u91cf\u65f6\u5982\u4f55\u907f\u514d\u6c61\u67d3Javascript\u7684\u5168\u5c40\u73af\u5883\uff1f<\/strong><\/p>\n<ol>\n<li>\n<p><strong>\u4ec0\u4e48\u662f\u53d8\u91cf\u6c61\u67d3\u5168\u5c40\u73af\u5883\uff1f<\/strong><br \/>\u53d8\u91cf\u6c61\u67d3\u5168\u5c40\u73af\u5883\u6307\u7684\u662f\u5728Javascript\u4e2d\u58f0\u660e\u53d8\u91cf\u65f6\uff0c\u5982\u679c\u672a\u4f7f\u7528\u9002\u5f53\u7684\u4f5c\u7528\u57df\u9650\u5236\uff0c\u4f1a\u5c06\u53d8\u91cf\u6dfb\u52a0\u5230\u5168\u5c40\u4f5c\u7528\u57df\u4e2d\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u53d8\u91cf\u91cd\u540d\u548c\u51b2\u7a81\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5982\u4f55\u907f\u514d\u53d8\u91cf\u6c61\u67d3\u5168\u5c40\u73af\u5883\uff1f<\/strong><br \/>\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u907f\u514d\u53d8\u91cf\u6c61\u67d3\u5168\u5c40\u73af\u5883\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528<code>var<\/code>\u3001<code>let<\/code>\u6216<code>const<\/code>\u5173\u952e\u5b57\u58f0\u660e\u53d8\u91cf\u3002\u8fd9\u4e9b\u5173\u952e\u5b57\u4f1a\u5c06\u53d8\u91cf\u9650\u5236\u5728\u5f53\u524d\u4f5c\u7528\u57df\u4e2d\uff0c\u800c\u4e0d\u662f\u6dfb\u52a0\u5230\u5168\u5c40\u4f5c\u7528\u57df\u3002<\/li>\n<li>\u5c06\u4ee3\u7801\u5305\u88c5\u5728\u51fd\u6570\u4e2d\u3002\u901a\u8fc7\u5c06\u4ee3\u7801\u5305\u88c5\u5728\u51fd\u6570\u4e2d\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5c40\u90e8\u4f5c\u7528\u57df\uff0c\u53d8\u91cf\u53ea\u80fd\u5728\u51fd\u6570\u5185\u90e8\u8bbf\u95ee\uff0c\u4e0d\u4f1a\u5bf9\u5168\u5c40\u73af\u5883\u4ea7\u751f\u5f71\u54cd\u3002<\/li>\n<li>\u4f7f\u7528\u6a21\u5757\u5316\u5f00\u53d1\u3002\u5c06\u4ee3\u7801\u5212\u5206\u4e3a\u6a21\u5757\uff0c\u4f7f\u7528\u6a21\u5757\u5bfc\u51fa\u548c\u5bfc\u5165\u673a\u5236\uff0c\u53ef\u4ee5\u907f\u514d\u53d8\u91cf\u6c61\u67d3\u5168\u5c40\u73af\u5883\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u4e3a\u4ec0\u4e48\u907f\u514d\u53d8\u91cf\u6c61\u67d3\u5168\u5c40\u73af\u5883\uff1f<\/strong><br \/>\u907f\u514d\u53d8\u91cf\u6c61\u67d3\u5168\u5c40\u73af\u5883\u7684\u4e3b\u8981\u539f\u56e0\u662f\u51cf\u5c11\u547d\u540d\u51b2\u7a81\u548c\u4ee3\u7801\u6df7\u4e71\u7684\u53ef\u80fd\u6027\u3002\u5982\u679c\u591a\u4e2a\u53d8\u91cf\u5177\u6709\u76f8\u540c\u7684\u540d\u79f0\u5e76\u4e14\u4f4d\u4e8e\u5168\u5c40\u4f5c\u7528\u57df\u4e2d\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u5916\u7684\u884c\u4e3a\u548c\u9519\u8bef\u3002\u4fdd\u6301\u53d8\u91cf\u7684\u4f5c\u7528\u57df\u5c3d\u53ef\u80fd\u5c0f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u9760\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"\u8981\u5728JavaScript\u4e2d\u58f0\u660e\u53d8\u91cf\u800c\u4e0d\u6c61\u67d3\u5168\u5c40\u73af\u5883\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e3b\u8981\u7b56\u7565\u6765\u5b9e\u73b0\uff1a\u4f7f\u7528\u5c40\u90e8\u4f5c\u7528\u57df\u3001\u5229\u7528\u7acb\u5373\u6267\u884c\u51fd [&hellip;]","protected":false},"author":3,"featured_media":161576,"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\/161568"}],"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=161568"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/161568\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/161576"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=161568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=161568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=161568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}