{"id":12291,"date":"2023-11-28T22:49:20","date_gmt":"2023-11-28T14:49:20","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12291"},"modified":"2023-11-29T23:12:34","modified_gmt":"2023-11-29T15:12:34","slug":"javascript-zhongyun-suan-fu-neng-zuo-shen-me","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhongyun-suan-fu-neng-zuo-shen-me\/","title":{"rendered":"JavaScript \u4e2d &#038;&#038;\u8fd0\u7b97\u7b26\u80fd\u505a\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c<code>&amp;&amp;<\/code> \u662f\u903b\u8f91\u4e0e\u8fd0\u7b97\u7b26\uff0c\u5b83\u4e3b\u8981\u7528\u4e8e\u5e03\u5c14\u7c7b\u578b\u7684\u64cd\u4f5c\uff0c\u4f46\u4e5f\u53ef\u7528\u4e8e\u5176\u4ed6\u7c7b\u578b\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u903b\u8f91\u64cd\u4f5c<\/strong>\uff1a<code>&amp;&amp;<\/code> \u8fd0\u7b97\u7b26\u5728\u903b\u8f91\u64cd\u4f5c\u4e2d\u7528\u4e8e\u8fde\u63a5\u4e24\u4e2a\u8868\u8fbe\u5f0f\uff0c\u8fd4\u56de\u4e24\u4e2a\u64cd\u4f5c\u6570\u4e2d\u7684\u7b2c\u4e00\u4e2a\u201c\u5047\u201d\u503c\uff08\u6216\u6700\u540e\u4e00\u4e2a\u201c\u771f\u201d\u503c\uff09\u3002\u5982\u679c\u7b2c\u4e00\u4e2a\u64cd\u4f5c\u6570\u4e3a\u5047\u503c\uff0c\u5219\u8fd4\u56de\u7b2c\u4e00\u4e2a\u64cd\u4f5c\u6570\uff0c\u5426\u5219\u8fd4\u56de\u7b2c\u4e8c\u4e2a\u64cd\u4f5c\u6570\u3002<\/p>\n<pre><code class=\"language-javascript\">\/\/ \u5047\u503c\u4e3a false\u30010\u3001\u7a7a\u5b57\u7b26\u4e32\u3001null\u3001undefined\u3001NaN\nlet result = true &amp;&amp; false; \/\/ \u8fd4\u56de false\nlet value = 0 &amp;&amp; 'Hello'; \/\/ \u8fd4\u56de 0\nlet message = '' &amp;&amp; 'Hi'; \/\/ \u8fd4\u56de ''\n<\/code><\/pre>\n<\/li>\n<li>\n<p><strong>\u6761\u4ef6\u8d4b\u503c<\/strong>\uff1a<code>&amp;&amp;<\/code> \u8fd0\u7b97\u7b26\u4e5f\u53ef\u7528\u4e8e\u6761\u4ef6\u8d4b\u503c\uff0c\u5f53\u7b2c\u4e00\u4e2a\u64cd\u4f5c\u6570\u4e3a\u771f\u65f6\uff0c\u8fd4\u56de\u7b2c\u4e8c\u4e2a\u64cd\u4f5c\u6570\u7684\u503c\uff0c\u5426\u5219\u8fd4\u56de\u7b2c\u4e00\u4e2a\u64cd\u4f5c\u6570\u7684\u503c\u3002<\/p>\n<pre><code class=\"language-javascript\">let color = 'blue';\nlet defaultColor = 'red';\nlet chosenColor = color &amp;&amp; defaultColor; \/\/ \u8fd4\u56de 'red'\uff0c\u56e0\u4e3a color \u4e3a\u771f\u503c\n<\/code><\/pre>\n<\/li>\n<\/ol>\n<p><code>&amp;&amp;<\/code> \u8fd0\u7b97\u7b26\u901a\u5e38\u7528\u4e8e\u6761\u4ef6\u5224\u65ad\u548c\u6761\u4ef6\u8d4b\u503c\uff0c\u6839\u636e\u903b\u8f91\u8868\u8fbe\u5f0f\u7684\u7ed3\u679c\u8fd4\u56de\u5e03\u5c14\u503c\u6216\u7279\u5b9a\u7684\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c&amp;&amp; \u662f\u903b\u8f91\u4e0e\u8fd0\u7b97\u7b26\uff0c\u5b83\u4e3b\u8981\u7528\u4e8e\u5e03\u5c14\u7c7b\u578b\u7684\u64cd\u4f5c\uff0c\u4f46\u4e5f\u53ef\u7528\u4e8e\u5176\u4ed6\u7c7b [&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-12291","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12291","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=12291"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12291\/revisions"}],"predecessor-version":[{"id":13580,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12291\/revisions\/13580"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12291"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}