{"id":158523,"date":"2024-05-08T12:52:15","date_gmt":"2024-05-08T04:52:15","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/158523.html"},"modified":"2024-05-08T12:52:19","modified_gmt":"2024-05-08T04:52:19","slug":"%e5%a6%82%e4%bd%95%e8%af%84%e4%bb%b7javascript%e4%b8%ad%e7%9a%84%e8%bf%99%e4%ba%9b%e5%9d%91","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/158523.html","title":{"rendered":"\u5982\u4f55\u8bc4\u4ef7javascript\u4e2d\u7684\u8fd9\u4e9b\u201c\u5751\u201d"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26221040\/6e5aa530-4053-4b0b-8ce0-ba58fd06b08e.webp\" alt=\"\u5982\u4f55\u8bc4\u4ef7javascript\u4e2d\u7684\u8fd9\u4e9b\u201c\u5751\u201d\" 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strict&#039;;<\/code>\uff09\u548c\u826f\u597d\u7684\u547d\u540d\u7a7a\u95f4\u7ba1\u7406\u7b56\u7565\u53ef\u4ee5\u5e2e\u52a9\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001==\u4e0e===\u7684\u533a\u522b<\/h3>\n<\/p>\n<p><p>\u5728JavaScript\u4e2d\u4f7f\u7528\u53cc\u7b49\u53f7\uff08<code>==<\/code>\uff09\u548c\u4e09\u7b49\u53f7\uff08<code>===<\/code>\uff09\u53ef\u4ee5\u68c0\u67e5\u4e24\u4e2a\u53d8\u91cf\u662f\u5426\u76f8\u7b49\u3002\u7136\u800c\uff0c\u53cc\u7b49\u53f7\u8fdb\u884c\u76f8\u7b49\u6027\u6d4b\u8bd5\u524d\u4f1a\u5148\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\uff0c\u800c\u4e09\u7b49\u53f7\u4e0d\u4f1a\uff0c\u5b83\u8981\u6c42\u503c\u548c\u7c7b\u578b\u90fd\u76f8\u540c\u3002\u7406\u89e3\u5e76\u6b63\u786e\u4f7f\u7528\u8fd9\u4e24\u4e2a\u8fd0\u7b97\u7b26\u662fJavaScript\u5f00\u53d1\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<\/p>\n<p><h3>\u516d\u3001\u539f\u578b\u94fe\u7ee7\u627f\u590d\u6742\u6027<\/h3>\n<\/p>\n<p><p>JavaScript\u4f7f\u7528\u57fa\u4e8e\u539f\u578b\u7684\u7ee7\u627f\u6a21\u578b\uff0c\u4e0e\u57fa\u4e8e\u7c7b\u7684\u7ee7\u627f\u6a21\u578b\u6709\u663e\u8457\u4e0d\u540c\u3002\u867d\u7136\u8fd9\u663e\u5f97\u66f4\u4e3a\u52a8\u6001\u548c\u7075\u6d3b\uff0c\u4f46\u4e5f\u4f7f\u5f97\u7ee7\u627f\u5173\u7cfb\u53d8\u5f97\u590d\u6742\uff0c\u7279\u522b\u662f\u5bf9\u521d\u5b66\u8005\u800c\u8a00\u3002\u7406\u89e3\u539f\u578b\u94fe\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u4ee5\u53ca\u5982\u4f55\u6b63\u786e\u4f7f\u7528<code>Object.create()<\/code>\u3001<code>constructor<\/code>\u51fd\u6570\u548c<code>prototype<\/code>\u5c5e\u6027\uff0c\u8fd9\u4e9b\u90fd\u662f\u5f88\u5173\u952e\u7684\u3002<\/p>\n<\/p>\n<p><h3>\u4e03\u3001\u5f02\u6b65\u7f16\u7a0b\u96be\u5ea6<\/h3>\n<\/p>\n<p><p>JavaScript\u5728Web\u5f00\u53d1\u4e2d\u7684\u5f02\u6b65\u7f16\u7a0b\u662f\u5176\u6838\u5fc3\u7ade\u4e89\u529b\u4e4b\u4e00\uff0c\u7136\u800c\u6b63\u786e\u5730\u7ba1\u7406\u5f02\u6b65\u884c\u4e3a\u5e76\u4e0d\u7b80\u5355\u3002\u8fd9\u5c31\u8981\u6c42\u5f00\u53d1\u8005\u638c\u63e1<code>callbacks<\/code>\u3001<code>promises<\/code>\u548c<code>async\/aw<a 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target=\"_blank\">AI<\/a>t<\/code>\u7b49\u6982\u5ff5\uff0c\u5e76\u77e5\u9053\u5982\u4f55\u5728\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\u4e2d\u6709\u6548\u5730\u7ba1\u7406\u72b6\u6001\u548c\u9519\u8bef\u5904\u7406\u3002<\/p>\n<\/p>\n<p><p>\u9488\u5bf9\u8fd9\u4e9b\u201c\u5751\u201d\uff0c\u5f00\u53d1\u8005\u9700\u8981\u4e86\u89e3\u5b83\u4eec\u7684\u5de5\u4f5c\u673a\u5236\uff0c\u5e76\u5b66\u4e60\u6700\u4f73\u5b9e\u8df5\u6765\u907f\u5f00\u5b83\u4eec\u3002\u53ef\u4ee5\u8bf4\uff0c\u7cbe\u901a\u8fd9\u4e9b\u7ec6\u8282\u5bf9\u4e8e\u6210\u4e3a\u4e00\u4e2a\u4f18\u79c0\u7684JavaScript\u5f00\u53d1\u8005\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u4e3a\u4ec0\u4e48JavaScript\u4e2d\u7684\u4e00\u4e9b\u201c\u5751\u201d\u4f1a\u5f15\u53d1\u7a0b\u5e8f\u5458\u7684\u70ed\u8bae\uff1f<\/strong><\/p>\n<p>\u5728JavaScript\u5f00\u53d1\u4e2d\uff0c\u5b58\u5728\u4e00\u4e9b\u5e38\u89c1\u7684\u201c\u5751\u201d\uff0c\u4f8b\u5982\u53d8\u91cf\u4f5c\u7528\u57df\u3001\u5185\u5b58\u7ba1\u7406\u3001\u5f02\u6b65\u7f16\u7a0b\u7b49\u3002\u8fd9\u4e9b\u201c\u5751\u201d\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u4e2d\u51fa\u73b0\u4e0d\u53ef\u9884\u6599\u7684\u9519\u8bef\u6216\u884c\u4e3a\uff0c\u5f15\u53d1\u4e86\u7a0b\u5e8f\u5458\u4e4b\u95f4\u7684\u8ba8\u8bba\u548c\u4e89\u8bae\u3002<\/p>\n<p><strong>\u5982\u4f55\u907f\u514dJavaScript\u4e2d\u7684\u5e38\u89c1\u201c\u5751\u201d\uff1f<\/strong><\/p>\n<p>\u907f\u514dJavaScript\u4e2d\u7684\u5e38\u89c1\u201c\u5751\u201d\u9700\u8981\u4e00\u4e9b\u6280\u5de7\u548c\u7ecf\u9a8c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e25\u683c\u6a21\u5f0f\u6765\u51cf\u5c11\u9690\u5f0f\u5168\u5c40\u53d8\u91cf\u7684\u95ee\u9898\uff0c\u624b\u52a8\u91ca\u653e\u4e0d\u518d\u4f7f\u7528\u7684\u53d8\u91cf\u4ee5\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\uff0c\u4f7f\u7528Promise\u6216async\/await\u6765\u66f4\u597d\u5730\u5904\u7406\u5f02\u6b65\u64cd\u4f5c\u7b49\u3002<\/p>\n<p><strong>\u4f60\u80fd\u5206\u4eab\u4e00\u4e9b\u6709\u5173JavaScript\u4e2d\u5e38\u89c1\u201c\u5751\u201d\u7684\u5b9e\u4f8b\u548c\u89e3\u51b3\u65b9\u6848\u5417\uff1f<\/strong><\/p>\n<p>\u5f53\u7136\uff01\u4e00\u4e2a\u5e38\u89c1\u7684\u4f8b\u5b50\u662f\u5728\u5faa\u73af\u4e2d\u4f7f\u7528setTimeout\u65f6\uff0c\u7531\u4e8eJavaScript\u7684\u4e8b\u4ef6\u5faa\u73af\u673a\u5236\uff0c\u8ba1\u65f6\u5668\u7684\u56de\u8c03\u51fd\u6570\u4f1a\u5728\u5faa\u73af\u7ed3\u675f\u540e\u624d\u6267\u884c\u3002\u89e3\u51b3\u65b9\u6848\u53ef\u4ee5\u662f\u4f7f\u7528\u95ed\u5305\u6765\u521b\u5efa\u65b0\u7684\u4f5c\u7528\u57df\uff0c\u4ee5\u4fdd\u5b58\u6bcf\u4e2a\u5faa\u73af\u4e2d\u7684\u8ba1\u65f6\u5668\u7684\u7d22\u5f15\uff0c\u6216\u8005\u4f7f\u7528\u65b0\u7684ES6\u8bed\u6cd5\u4e2d\u7684let\u5173\u952e\u5b57\u6765\u521b\u5efa\u5757\u7ea7\u4f5c\u7528\u57df\u3002\u8fd9\u6837\uff0c\u5c31\u53ef\u4ee5\u907f\u514d\u51fa\u73b0\u610f\u5916\u7684\u884c\u4e3a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"JavaScript\u4f5c\u4e3a\u4e00\u79cd\u6781\u4e3a\u6d41\u884c\u4e14\u5177\u5907\u5f3a\u5927\u80fd\u529b\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u5728\u5f00\u53d1\u4e2d\u88ab\u5e7f\u6cdb\u4f7f\u7528\u3002\u7136\u800c\uff0cJavaScript\u6709 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