{"id":12976,"date":"2023-11-29T10:12:46","date_gmt":"2023-11-29T02:12:46","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12976"},"modified":"2023-11-29T10:12:53","modified_gmt":"2023-11-29T02:12:53","slug":"qian-duan-mian-shi-ti-shou-dong-shi-xianarray-prot-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/29\/qian-duan-mian-shi-ti-shou-dong-shi-xianarray-prot-2\/","title":{"rendered":"\u524d\u7aef\u9762\u8bd5\u9898\uff1a\u624b\u52a8\u5b9e\u73b0Array. prototype. map\u65b9\u6cd5"},"content":{"rendered":"<p>map()\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u7ed3\u679c\u662f\u8be5\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u8c03\u7528\u4e00\u4e2a\u63d0\u4f9b\u7684\u51fd\u6570\u540e\u8fd4\u56de\u7684\u7ed3 \u679c\u3002<br \/>\nfunction map(arr, mapCallback) {<br \/>\n\/\/\u9996\u5148\uff0c\u68c0\u67e5\u4f20\u9012\u7684\u53c2\u6570\u662f\u5426\u6b63\u786e\u3002<br \/>\nif (! Array, is Array (arr) | | !arr. length 11 typeof mapCallback != &quot; function&quot;) { return []\uff1b<br \/>\n} else {<br \/>\nlet result =[]\uff1b<br \/>\n\/\/\u6bcf\u6b21\u8c03\u7528\u6b64\u51fd\u6570\u65f6\uff0c\u6211\u4eec\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2aresult\u6570\u7ec4<br \/>\n\/\/\u56e0\u4e3a\u6211\u4eec\u4e0d\u60f3\u6539\u53d8\u539f\u59cb\u6570\u7ec4\u3002<br \/>\nfor (let i = 0, len = arr. length\uff1b i &lt; len\uff1b i++) {<br \/>\nresult.push(mapCallback(arr[i], i, arr))\uff1b<br \/>\n\/\/\u5c06mapCallback\u8fd4\u56de\u7684\u7ed3\u679cpush\u5230result\u6570\u7ec4\u4e2d<br \/>\n}<br \/>\nreturn result\uff1b<br \/>\n}<br \/>\n}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>map()\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u7ed3\u679c\u662f\u8be5\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u8c03\u7528\u4e00\u4e2a\u63d0\u4f9b\u7684\u51fd\u6570\u540e\u8fd4\u56de\u7684\u7ed3 \u679c\u3002 function [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-12976","post","type-post","status-publish","format-standard","hentry","category-qianduan"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12976","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=12976"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12976\/revisions"}],"predecessor-version":[{"id":12977,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12976\/revisions\/12977"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12976"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}