{"id":12239,"date":"2023-11-28T22:48:02","date_gmt":"2023-11-28T14:48:02","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12239"},"modified":"2023-11-29T23:18:25","modified_gmt":"2023-11-29T15:18:25","slug":"javascript-zhong-1-2-3-mapparseint-da-an-shi-duo-s","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-1-2-3-mapparseint-da-an-shi-duo-s\/","title":{"rendered":"JavaScript \u4e2d[&#8220;1&#8221;, &#8220;2&#8221;, &#8220;3&#8221;].map(parseInt)\u7b54\u6848\u662f\u591a\u5c11\uff1f"},"content":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c<code>[&quot;1&quot;, &quot;2&quot;, &quot;3&quot;].map(parseInt)<\/code> \u7684\u7ed3\u679c\u662f <code>[1, NaN, NaN]<\/code>\u3002<\/p>\n<p>\u8fd9\u4e2a\u7ed3\u679c\u53ef\u80fd\u4ee4\u4eba\u611f\u5230\u56f0\u60d1\uff0c\u56e0\u4e3a <code>map<\/code> \u65b9\u6cd5\u4f1a\u4f20\u9012\u5f53\u524d\u5143\u7d20\u3001\u5f53\u524d\u7d22\u5f15\u548c\u6570\u7ec4\u672c\u8eab\u7ed9\u56de\u8c03\u51fd\u6570\u3002\u800c <code>parseInt<\/code> \u51fd\u6570\u63a5\u6536\u4e24\u4e2a\u53c2\u6570\uff1a\u8981\u8f6c\u6362\u7684\u503c\u548c\u8fdb\u5236\u3002\u7136\u800c\uff0c<code>map<\/code> \u4f20\u9012\u4e86\u4e09\u4e2a\u53c2\u6570\uff0c\u5176\u4e2d\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7d22\u5f15\u88ab <code>parseInt<\/code> \u89e3\u91ca\u4e3a\u8fdb\u5236\uff0c\u5bfc\u81f4\u4e86\u610f\u5916\u7684\u7ed3\u679c\uff1a<\/p>\n<ul>\n<li><code>&quot;1&quot;<\/code> \u88ab\u89e3\u6790\u4e3a\u5341\u8fdb\u5236\u6570 1\uff0c\u56e0\u4e3a <code>parseInt(&quot;1&quot;, 0)<\/code> \u8868\u793a\u4ee5\u5341\u8fdb\u5236\u89e3\u6790\u3002<\/li>\n<li><code>&quot;2&quot;<\/code> \u88ab\u89e3\u6790\u4e3a NaN\uff0c\u56e0\u4e3a <code>parseInt(&quot;2&quot;, 1)<\/code> \u4e2d\u7684\u8fdb\u5236 1 \u662f\u65e0\u6548\u7684\u3002<\/li>\n<li><code>&quot;3&quot;<\/code> \u88ab\u89e3\u6790\u4e3a NaN\uff0c\u56e0\u4e3a <code>parseInt(&quot;3&quot;, 2)<\/code> \u4e2d\u7684\u8fdb\u5236 2 \u4e5f\u662f\u65e0\u6548\u7684\uff08\u5728\u4e8c\u8fdb\u5236\u4e2d\u6ca1\u6709\u6570\u5b57 3\uff09\u3002<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c<code>[&quot;1&quot;, &quot;2&quot;, &quot;3&quot;].map(parseInt)<\/code> \u7684\u7ed3\u679c\u662f <code>[1, NaN, NaN]<\/code>\u3002\u4e3a\u907f\u514d\u8fd9\u79cd\u6df7\u6dc6\uff0c\u53ef\u4ee5\u4f7f\u7528\u7bad\u5934\u51fd\u6570\u6765\u786e\u4fdd <code>parseInt<\/code> \u88ab\u6b63\u786e\u8c03\u7528\uff0c\u4f8b\u5982 <code>[&quot;1&quot;, &quot;2&quot;, &quot;3&quot;].map(num =&gt; parseInt(num))<\/code>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c[&quot;1&quot;, &quot;2&quot;, &quot;3&#038;q [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-12239","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12239","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\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=12239"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12239\/revisions"}],"predecessor-version":[{"id":13585,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12239\/revisions\/13585"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12239"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}