{"id":11518,"date":"2023-11-28T22:21:32","date_gmt":"2023-11-28T14:21:32","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11518"},"modified":"2023-12-15T15:42:52","modified_gmt":"2023-12-15T07:42:52","slug":"qian-duan-mian-shi-ti-yun-suan-fu-neng-zuo-shen-m-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/qian-duan-mian-shi-ti-yun-suan-fu-neng-zuo-shen-m-2\/","title":{"rendered":"\u524d\u7aef\u9762\u8bd5\u9898: !!\u8fd0\u7b97\u7b26\u80fd\u505a\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>!!\u8fd0\u7b97\u7b26 \u53ef\u4ee5\u5c06\u53f3\u4fa7\u7684\u503c\u5f3a\u5236\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\uff0c\u8fd9\u4e5f\u662f\u5c06\u503c\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u7684\u4e00\u79cd\u7b80\u5355\u65b9\u6cd5\u3002<\/p>\n<pre><code class=\"language-js  line-numbers\">console. log(!!null)\uff1b \/\/ false\nconsole. log(!!undefined)\uff1b \/\/ false\nconsole. log(!!''); \/\/ false\nconsole. log(!!0)\uff1b \/\/ false\nconsole. log(!!NaN)\uff1b \/\/ false\nconsole.log(!!' ')\uff1b \/\/ true\nconsole. log(!! {}); \/\/ true\nconsole. log(! ! []) \uff1b \/\/ true\nconsole. log(!! 1) \uff1b \/\/ true\nconsole. log(!![]. length)\uff1b \/\/ false\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>!!\u8fd0\u7b97\u7b26 \u53ef\u4ee5\u5c06\u53f3\u4fa7\u7684\u503c\u5f3a\u5236\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\uff0c\u8fd9\u4e5f\u662f\u5c06\u503c\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u7684\u4e00\u79cd\u7b80\u5355\u65b9\u6cd5\u3002 console. log( [&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-11518","post","type-post","status-publish","format-standard","hentry","category-qianduan"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11518","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=11518"}],"version-history":[{"count":4,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11518\/revisions"}],"predecessor-version":[{"id":48263,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11518\/revisions\/48263"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11518"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}