{"id":11757,"date":"2023-11-28T22:33:06","date_gmt":"2023-11-28T14:33:06","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11757"},"modified":"2023-11-28T22:33:09","modified_gmt":"2023-11-28T14:33:09","slug":"qian-duan-mian-shi-ti-shen-me-shi-jian-tou-han-shu","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/qian-duan-mian-shi-ti-shen-me-shi-jian-tou-han-shu\/","title":{"rendered":"\u524d\u7aef\u9762\u8bd5\u9898\uff1a\u4ec0\u4e48\u662f\u7bad\u5934\u51fd\u6570\uff1f"},"content":{"rendered":"<p>\u7bad\u5934\u51fd\u6570\u8868\u8fbe\u5f0f\u7684\u8bed\u6cd5\u6bd4\u51fd\u6570\u8868\u8fbe\u5f0f\u66f4\u7b80\u6d01\uff0c\u5e76\u4e14\u6ca1\u6709\u81ea\u5df1\u7684this, arguments, super\u6216 new. target\u3002\u7bad\u5934\u51fd\u6570\u8868\u8fbe\u5f0f\u66f4\u9002\u7528\u4e8e\u90a3\u4e9b\u672c\u6765\u9700\u8981\u533f\u540d\u51fd\u6570\u7684\u5730\u65b9\uff0c\u5e76\u4e14\u5b83\u4e0d\u80fd\u7528\u4f5c\u6784\u9020\u51fd \u6570\u3002<br \/>\n\/\/ES5 Version<br \/>\nvar getCurrentDate = function \uff08\uff09{<br \/>\nreturn new Date() \uff1b<br \/>\n}<br \/>\n\/\/ES6 Version<br \/>\nconst getCurrentDate = () =&gt; new Date()\uff1b<br \/>\n\u5728\u672c\u4f8b\u4e2d\uff0cES5\u7248\u672c\u4e2d\u6709function() {}\u58f0\u660e\u548creturn\u5173\u952e\u5b57\uff0c\u8fd9\u4e24\u4e2a\u5173\u952e\u5b57\u5206\u522b\u662f\u521b\u5efa\u51fd\u6570 \u548c\u8fd4\u56de\u503c\u6240\u9700\u8981\u7684\u3002\u5728\u7bad\u5934\u51fd\u6570\u7248\u672c\u4e2d\uff0c\u6211\u4eec\u53ea\u9700\u8981()\u62ec\u53f7\uff0c\u4e0d\u9700\u8981return\u8bed\u53e5\uff0c\u56e0\u4e3a\u5982\u679c \u6211\u4eec\u53ea\u6709\u4e00\u4e2a\u8868\u8fbe\u5f0f\u6216\u503c\u9700\u8981\u8fd4\u56de\uff0c\u7bad\u5934\u51fd\u6570\u5c31\u4f1a\u6709\u4e00\u4e2a\u9690\u5f0f\u7684\u8fd4\u56de\u3002<br \/>\n\/\/ES5 Version<br \/>\nfunction greet(name) {<br \/>\nreturn &#8216;Hello &#8216; + name + &#8216;!&#8217;\uff1b<br \/>\n}<br \/>\n\/\/ES6 Version<br \/>\nconst greet = (name) =&gt; Hello ${name}\uff1b<br \/>\nconst greet2 = name =&gt; Hello ${name}\uff1b<br \/>\n\u6211\u4eec\u8fd8\u53ef\u4ee5\u5728\u7bad\u5934\u51fd\u6570\u4e2d\u4f7f\u7528\u4e0e\u51fd\u6570\u8868\u8fbe\u5f0f\u548c\u51fd\u6570\u58f0\u660e\u76f8\u540c\u7684\u53c2\u6570\u3002\u5982\u679c\u6211\u4eec\u5728\u4e00\u4e2a\u7bad\u5934\u51fd\u6570 \u4e2d\u6709\u4e00\u4e2a\u53c2\u6570\uff0c\u5219\u53ef\u4ee5\u7701\u7565\u62ec\u53f7\u3002<br \/>\nconst getArgs = () =&gt; arguments const getArgs2 = (&#8230;rest) =&gt; rest<br \/>\n\u7bad\u5934\u51fd\u6570\u4e0d\u80fd\u8bbf\u95eearguments\u5bf9\u8c61\u3002\u6240\u4ee5\u8c03\u7528\u7b2c\u4e00\u4e2agetArgs\u51fd\u6570\u4f1a\u629b\u51fa\u4e00\u4e2a\u9519\u8bef\u3002\u76f8\u53cd\uff0c\u6211 \u4eec\u53ef\u4ee5\u4f7f\u7528rest\u53c2\u6570\u6765\u83b7\u5f97\u5728\u7bad\u5934\u51fd\u6570\u4e2d\u4f20\u9012\u7684\u6240\u6709\u53c2\u6570\u3002<br \/>\nconst data = {<br \/>\nresult\uff1a 0,<br \/>\nnums\uff1a [1, 2, 3, 4, 5],<br \/>\ncomputeResult() {<br \/>\n\/\/\u8fd9\u91cc\u7684\u201cthis\u201d\u6307\u7684\u662f&quot;data\u201d\u5bf9\u8c61<br \/>\nconst addAll =()=&gt;{<br \/>\nreturn this. nums. reduce((total, cur) =&gt; total + cur, 0)<br \/>\n};<br \/>\nthis. result = addAll ()\uff1b<br \/>\n}<br \/>\n};<br \/>\n\u7bad\u5934\u51fd\u6570\u6ca1\u6709\u81ea\u5df1\u7684this\u503c\u3002\u5b83\u6355\u83b7\u8bcd\u6cd5\u4f5c\u7528\u57df\u51fd\u6570\u7684this\u503c\uff0c\u5728\u6b64\u793a\u4f8b\u4e2d\uff0caddAll\u51fd\u6570 \u5c06\u590d\u5236computeResult\u65b9\u6cd5\u4e2d\u7684this\u503c\uff0c\u5982\u679c\u6211\u4eec\u5728\u5168\u5c40\u4f5c\u7528\u57df\u58f0\u660e\u7bad\u5934\u51fd\u6570\uff0c\u5219this\u503c \u4e3awindow\u5bf9\u8c61\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7bad\u5934\u51fd\u6570\u8868\u8fbe\u5f0f\u7684\u8bed\u6cd5\u6bd4\u51fd\u6570\u8868\u8fbe\u5f0f\u66f4\u7b80\u6d01\uff0c\u5e76\u4e14\u6ca1\u6709\u81ea\u5df1\u7684this, arguments, super\u6216 new. 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