{"id":166923,"date":"2024-05-08T15:52:12","date_gmt":"2024-05-08T07:52:12","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166923.html"},"modified":"2024-05-08T15:52:20","modified_gmt":"2024-05-08T07:52:20","slug":"javascript%e9%9a%be%e5%9c%a8%e5%93%aa","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/166923.html","title":{"rendered":"JavaScript\u96be\u5728\u54ea"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26234300\/bd703da6-f74d-44c9-8b1a-865df1272362.webp\" alt=\"JavaScript\u96be\u5728\u54ea\" \/><\/p>\n<p><p>JavaScript\u96be\u5728\u5176\u4e0d\u89c4\u5219\u548c\u975e\u76f4\u89c2\u7684\u8bed\u6cd5\u3001\u6613\u53d8\u52a8\u7684\u751f\u6001\u7cfb\u7edf\u3001\u5f02\u6b65\u7f16\u7a0b\u590d\u6742\u6027\u4ee5\u53ca\u6d4f\u89c8\u5668\u95f4\u7684\u517c\u5bb9\u95ee\u9898\u3002<strong>JavaScript\u8bed\u6cd5\u4e2d\u9690\u5f0f\u8f6c\u6362<\/strong>\u8ba9\u521d\u5b66\u8005\u96be\u4ee5\u638c\u63e1\uff0c\u8fd9\u4e5f\u662fJavaScript\u96be\u4ee5\u7406\u89e3\u7684\u4e00\u4e2a\u65b9\u9762\u3002\u4f8b\u5982\uff0c\u2018==\u2019\u548c\u2018===\u2019\u7684\u533a\u522b\uff1a\u524d\u8005\u4f1a\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\u800c\u540e\u8005\u4e0d\u4f1a\uff0c\u8fd9\u5728\u5b9e\u9645\u7f16\u7a0b\u65f6\u4f1a\u5bfc\u81f4\u8bb8\u591a\u5bb9\u6613\u5ffd\u89c6\u7684\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><p>JavaScript\u8bed\u6cd5\u4e0e\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u76f8\u6bd4\uff0c\u5f80\u5f80\u663e\u5f97\u66f4\u7075\u6d3b\u3001\u66f4\u5177\u6709\u8868\u8fbe\u6027\u3002\u4f46\u8fd9\u79cd\u7075\u6d3b\u6027\u4e5f\u5e26\u6765\u4e86\u4e0d\u4e00\u81f4\u6027\u548c\u9690\u6666\u6027\uff0c\u5bfc\u81f4\u521d\u5b66\u8005\u5728\u7406\u89e3\u8bed\u8a00\u7279\u6027\u65f6\u9762\u4e34\u56f0\u96be\u3002\u4f8b\u5982\uff0cJavaScript\u4e2d\u7684this\u5173\u952e\u5b57\u5c31\u662f\u4e00\u4e2a\u6781\u6613\u6df7\u6dc6\u7684\u6982\u5ff5\uff0c\u5b83\u6839\u636e\u51fd\u6570\u8c03\u7528\u7684\u4e0a\u4e0b\u6587\u4f1a\u6307\u5411\u4e0d\u540c\u7684\u5bf9\u8c61\u3002<\/p>\n<\/p>\n<p><h3><strong>\u4e00\u3001\u8bed\u6cd5\u7684\u4e0d\u4e00\u81f4\u6027<\/strong><\/h3>\n<\/p>\n<p><p>JavaScript\u8bed\u8a00\u5728\u8bbe\u8ba1\u4e4b\u521d\uff0c\u529b\u6c42\u7b80\u5355\u548c\u6613\u7528\uff0c\u4f46\u662f\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\u548c\u8bed\u8a00\u7684\u53d1\u5c55\uff0c\u4e00\u4e9b\u8bed\u6cd5\u6cbf\u88ad\u4e86\u65e9\u671f\u7684\u8bbe\u8ba1\uff0c\u5bfc\u81f4\u73b0\u5728\u7684JavaScript\u8bed\u6cd5\u4f53\u7cfb\u4e2d\u5b58\u5728\u4e00\u4e9b\u4e0d\u4e00\u81f4\u548c\u4e0d\u76f4\u89c2\u7684\u5730\u65b9\u3002<\/p>\n<\/p>\n<ul>\n<li>\n<p><strong>\u52a8\u6001\u7c7b\u578b\uff1a<\/strong><\/p>\n<p>JavaScript\u662f\u4e00\u95e8\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\uff0c\u53d8\u91cf\u65e0\u9700\u9884\u5b9a\u4e49\u7c7b\u578b\uff0c\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\u53ef\u4ee5\u6539\u53d8\u3002\u8fd9\u79cd\u8bbe\u8ba1\u589e\u52a0\u4e86\u7f16\u7a0b\u7684\u7075\u6d3b\u6027\uff0c\u4f46\u540c\u65f6\u4e5f\u9020\u6210\u4e86\u7c7b\u578b\u9519\u8bef\u68c0\u6d4b\u7684\u56f0\u96be\uff0c\u5bf9\u521d\u5b66\u8005\u6765\u8bf4\u5bb9\u6613\u5f15\u53d1\u7406\u89e3\u548c\u8c03\u8bd5\u4e0a\u7684\u95ee\u9898\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u7c7b\u578b\u8f6c\u6362\uff1a<\/strong><\/p>\n<p>JavaScript\u4e2d\u7684\u9690\u5f0f\u548c\u663e\u5f0f\u7c7b\u578b\u8f6c\u6362\uff0c\u5c24\u5176\u662f\u4e0e\u5f31\u7c7b\u578b\u76f8\u5173\u7684\u8f6c\u6362\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u6781\u6613\u4ea7\u751f\u9519\u8bef\u3002\u4f8b\u5982\uff0c\u6570\u5b57\u4e0e\u5b57\u7b26\u4e32\u7684\u62fc\u63a5\u3001\u5e03\u5c14\u503c\u4e0e\u6570\u5b57\u7684\u8f6c\u6362\u7b49\uff0c\u90fd\u53ef\u80fd\u5bfc\u81f4\u975e\u9884\u671f\u7684\u7ed3\u679c\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<p><h3><strong>\u4e8c\u3001\u6613\u53d8\u7684\u751f\u6001\u7cfb\u7edf<\/strong><\/h3>\n<\/p>\n<p><p>JavaScript\u7684\u751f\u6001\u7cfb\u7edf\u975e\u5e38\u5e9e\u5927\u4e14\u4e0d\u65ad\u6f14\u53d8\uff0c\u5bf9\u4e8e\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u8ddf\u4e0a\u6700\u65b0\u8d8b\u52bf\u548c\u5de5\u5177\u9700\u6c42\u8017\u8d39\u5927\u91cf\u65f6\u95f4\u548c\u7cbe\u529b\u3002<\/p>\n<\/p>\n<ul>\n<li>\n<p><strong>\u5de5\u5177\u548c\u5e93\u7684\u6cdb\u6ee5\uff1a<\/strong><\/p>\n<p>\u8bb8\u591a\u4e0d\u540c\u7684\u5e93\u548c\u6846\u67b6\uff0c\u5982React\u3001Angular\u3001Vue\u7b49\uff0c\u5b83\u4eec\u5404\u6709\u5343\u79cb\uff0c\u4f46\u4e5f\u8981\u6c42\u5f00\u53d1\u8005\u4e0d\u65ad\u5b66\u4e60\u548c\u9002\u5e94\u3002\u8fd9\u589e\u52a0\u4e86\u5b66\u4e60\u8fc7\u7a0b\u7684\u8d1f\u62c5\uff0c\u8ba9\u5f00\u53d1\u8005\u5728\u591a\u79cd\u6280\u672f\u6808\u4e2d\u5f98\u5f8a\uff0c\u65e0\u6cd5\u6df1\u5165\u638c\u63e1\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u73b0\u4ee3\u6784\u5efa\u7cfb\u7edf\uff1a<\/strong><\/p>\n<p>\u73b0\u4ee3JavaScript\u9879\u76ee\u901a\u5e38\u9700\u8981\u6784\u5efa\u7cfb\u7edf\u914d\u5408\uff0c\u4f8b\u5982Webpack\u548cBabel\u7b49\uff0c\u8fd9\u5bf9\u4e8e\u521d\u5b66\u8005\u800c\u8a00\uff0c\u5c5e\u4e8e\u989d\u5916\u7684\u5b66\u4e60\u6210\u672c\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<p><h3><strong>\u4e09\u3001\u5f02\u6b65\u7f16\u7a0b\u7684\u590d\u6742\u6027<\/strong><\/h3>\n<\/p>\n<p><p>JavaScript\u5728\u5904\u7406\u5f02\u6b65\u7f16\u7a0b\u65f6\uff0c\u5f15\u5165\u4e86\u8bf8\u5982\u56de\u8c03\u3001Promises\u3001async\/aw<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>t\u7b49\u673a\u5236\uff0c\u8fd9\u4e9b\u6982\u5ff5\u589e\u52a0\u4e86\u7406\u89e3\u7684\u95e8\u69db\u3002<\/p>\n<\/p>\n<ul>\n<li>\n<p><strong>\u56de\u8c03\u5730\u72f1\uff1a<\/strong><\/p>\n<p>\u5f02\u6b65\u7f16\u7a0b\u6700\u521d\u7684\u5b9e\u73b0\u65b9\u5f0f\u662f\u901a\u8fc7\u56de\u8c03\u51fd\u6570\uff0c\u9047\u5230\u591a\u5c42\u5d4c\u5957\u65f6\u4f1a\u5bfc\u81f4\u4ee3\u7801\u96be\u4ee5\u7ef4\u62a4\u548c\u7406\u89e3\uff0c\u88ab\u79f0\u4f5c\u201c\u56de\u8c03\u5730\u72f1\u201d\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>Promises\u548casync\/await\uff1a<\/strong><\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u56de\u8c03\u5730\u72f1\u7684\u95ee\u9898\uff0cPromises\u548casync\/await\u88ab\u5f15\u5165\u3002\u867d\u7136\u5b83\u4eec\u7b80\u5316\u4e86\u5f02\u6b65\u64cd\u4f5c\uff0c\u4f46\u5b66\u4e60\u5982\u4f55\u6b63\u786e\u4f7f\u7528\u5b83\u4eec\u4e5f\u662f\u4e00\u5927\u6311\u6218\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<p><h3><strong>\u56db\u3001\u517c\u5bb9\u6027\u95ee\u9898<\/strong><\/h3>\n<\/p>\n<p><p>JavaScript\u5f00\u53d1\u8fd8\u9700\u8003\u8651\u4e0d\u540c\u6d4f\u89c8\u5668\u548c\u8bbe\u5907\u4e4b\u95f4\u7684\u517c\u5bb9\u6027\u5dee\u5f02\uff0c\u8981\u6c42\u7f16\u5199\u8de8\u5e73\u53f0\u53ef\u9760\u8fd0\u884c\u7684\u4ee3\u7801\u3002<\/p>\n<\/p>\n<ul>\n<li>\n<p><strong>\u6d4f\u89c8\u5668\u5dee\u5f02\uff1a<\/strong><\/p>\n<p>\u867d\u7136\u968f\u7740HTML5\u548cCSS3\u7684\u666e\u53ca\uff0c\u4e3b\u6d41\u6d4f\u89c8\u5668\u7684\u517c\u5bb9\u6027\u95ee\u9898\u6709\u6240\u6539\u5584\uff0c\u4f46\u662f\u4ecd\u7136\u5b58\u5728\uff0c\u7279\u522b\u662f\u5728\u65e7\u7248\u6d4f\u89c8\u5668\u4e0a\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>Polyfills\u548cTranspilers\uff1a<\/strong><\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u9700\u8981\u4f7f\u7528Polyfills\u548cTranspilers\uff0c\u5982Babel\uff0c\u5b83\u4eec\u80fd\u591f\u8ba9\u5f00\u53d1\u8005\u4f7f\u7528\u65b0\u7684\u8bed\u8a00\u7279\u6027\uff0c\u540c\u65f6\u786e\u4fdd\u5728\u65e7\u7248\u6d4f\u89c8\u5668\u4e0a\u7684\u517c\u5bb9\u6027\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<p><p>JavaScript\u7684\u8fd9\u4e9b\u56f0\u96be\u70b9\uff0c\u5bf9\u4e8e\u5f00\u53d1\u8005\u5c24\u5176\u662f\u521d\u5b66\u8005\u800c\u8a00\uff0c\u8868\u793a\u8981\u4ed8\u51fa\u989d\u5916\u7684\u52aa\u529b\u6765\u7406\u89e3\u548c\u638c\u63e1\u3002\u53ea\u6709\u6df1\u5165\u5b66\u4e60\u548c\u5b9e\u8df5\uff0c\u624d\u80fd\u771f\u6b63\u6210\u4e3a\u4e00\u540d\u7cbe\u901aJavaScript\u7684\u5f00\u53d1\u8005\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u4e3a\u4ec0\u4e48\u5f88\u591a\u4eba\u8ba4\u4e3aJavaScript\u96be\u5b66\uff1f<\/strong><\/p>\n<p>JavaScript\u5177\u6709\u4e00\u4e9b\u7279\u6027\u548c\u6982\u5ff5\uff0c\u8fd9\u4f7f\u5f97\u521d\u5b66\u8005\u6709\u4e9b\u56f0\u60d1\u3002\u4f8b\u5982\uff0c\u52a8\u6001\u7c7b\u578b\u7684\u7279\u6027\u548c\u51fd\u6570\u7684\u56de\u8c03\u53ef\u80fd\u5bf9\u521d\u5b66\u8005\u6765\u8bf4\u6709\u4e9b\u96be\u4ee5\u7406\u89e3\u3002\u800c\u4e14\uff0c\u5b66\u4e60JavaScript\u65f6\uff0c\u9700\u8981\u638c\u63e1\u7684\u5185\u5bb9\u975e\u5e38\u5e7f\u6cdb\uff0c\u4ece\u8bed\u6cd5\u5230DOM\u64cd\u4f5c\u518d\u5230\u5f02\u6b65\u7f16\u7a0b\u7b49\u5404\u4e2a\u65b9\u9762\u90fd\u9700\u8981\u5b66\u4e60\u548c\u7ec3\u4e60\u3002<\/p>\n<p><strong>\u6709\u54ea\u4e9b\u5e38\u89c1\u7684JavaScript\u96be\u70b9\uff1f<\/strong><\/p>\n<p>\u5728\u5b66\u4e60JavaScript\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e00\u4e9b\u5e38\u89c1\u7684\u96be\u70b9\u5305\u62ec\uff1a\u4f5c\u7528\u57df\u3001\u95ed\u5305\u3001\u539f\u578b\u7ee7\u627f\u3001\u4e8b\u4ef6\u5904\u7406\u3001\u5f02\u6b65\u7f16\u7a0b\u7b49\u3002\u8fd9\u4e9b\u6982\u5ff5\u548c\u6280\u5de7\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\u53ef\u80fd\u6709\u4e9b\u62bd\u8c61\u548c\u96be\u4ee5\u7406\u89e3\uff0c\u9700\u8981\u82b1\u8d39\u4e00\u5b9a\u7684\u65f6\u95f4\u548c\u7cbe\u529b\u6765\u638c\u63e1\u3002<\/p>\n<p><strong>\u5982\u4f55\u514b\u670d\u5b66\u4e60JavaScript\u7684\u56f0\u96be\uff1f<\/strong><\/p>\n<p>\u8981\u514b\u670d\u5b66\u4e60JavaScript\u7684\u56f0\u96be\uff0c\u9996\u5148\u8981\u5efa\u7acb\u624e\u5b9e\u7684\u57fa\u7840\u77e5\u8bc6\u3002\u7406\u89e3JavaScript\u7684\u57fa\u672c\u8bed\u6cd5\u548c\u6838\u5fc3\u6982\u5ff5\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5176\u6b21\uff0c\u901a\u8fc7\u9605\u8bfb\u4f18\u8d28\u7684\u6559\u7a0b\u548c\u6587\u6863\uff0c\u8fdb\u884c\u5b9e\u8df5\u548c\u7ec3\u4e60\uff0c\u4e0d\u65ad\u5730\u5199\u4ee3\u7801\u6765\u52a0\u6df1\u5bf9JavaScript\u7684\u7406\u89e3\u548c\u8fd0\u7528\u3002\u6b64\u5916\uff0c\u53c2\u4e0e\u793e\u533a\u548c\u8bba\u575b\uff0c\u4e0e\u5176\u4ed6\u5f00\u53d1\u8005\u4ea4\u6d41\u7ecf\u9a8c\u548c\u89e3\u51b3\u95ee\u9898\uff0c\u4e5f\u662f\u63d0\u9ad8JavaScript\u6280\u80fd\u7684\u6709\u6548\u9014\u5f84\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"JavaScript\u96be\u5728\u5176\u4e0d\u89c4\u5219\u548c\u975e\u76f4\u89c2\u7684\u8bed\u6cd5\u3001\u6613\u53d8\u52a8\u7684\u751f\u6001\u7cfb\u7edf\u3001\u5f02\u6b65\u7f16\u7a0b\u590d\u6742\u6027\u4ee5\u53ca\u6d4f\u89c8\u5668\u95f4\u7684\u517c\u5bb9\u95ee\u9898\u3002Jav [&hellip;]","protected":false},"author":3,"featured_media":166941,"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\/166923"}],"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=166923"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/166923\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/166941"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=166923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=166923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=166923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}