{"id":11986,"date":"2023-11-28T22:39:33","date_gmt":"2023-11-28T14:39:33","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11986"},"modified":"2023-11-30T17:57:56","modified_gmt":"2023-11-30T09:57:56","slug":"javascript-zhong-sheng-ming-han-shu-zuo-yong-ti-sh","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-sheng-ming-han-shu-zuo-yong-ti-sh\/","title":{"rendered":"JavaScript \u4e2d\u58f0\u660e\u51fd\u6570\u4f5c\u7528\u63d0\u5347\uff1f\u58f0\u660e\u53d8\u91cf\u548c\u58f0\u660e\u51fd\u6570\u7684\u63d0\u5347\u6709\u4ec0\u4e48\u533a\u522b\uff1f"},"content":{"rendered":"<p>JavaScript \u4e2d\u7684\u51fd\u6570\u548c\u53d8\u91cf\u5728\u88ab\u58f0\u660e\u4e4b\u524d\u5c31\u53ef\u4ee5\u88ab\u8bbf\u95ee\u7684\u7279\u6027\u79f0\u4e3a\u201c\u63d0\u5347\u201d\u3002<\/p>\n<h3><a id=\"%E5%A3%B0%E6%98%8E%E5%87%BD%E6%95%B0%E7%9A%84%E4%BD%9C%E7%94%A8%E6%8F%90%E5%8D%87%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u58f0\u660e\u51fd\u6570\u7684\u4f5c\u7528\u63d0\u5347\uff1a<\/h3>\n<p>\u5728 JavaScript \u4e2d\uff0c\u51fd\u6570\u58f0\u660e\u4f1a\u88ab\u63d0\u5347\u5230\u5f53\u524d\u4f5c\u7528\u57df\u7684\u9876\u90e8\u3002\u8fd9\u610f\u5473\u7740\u53ef\u4ee5\u5728\u51fd\u6570\u58f0\u660e\u4e4b\u524d\u8c03\u7528\u8be5\u51fd\u6570\uff0c\u800c\u4e0d\u4f1a\u5f15\u53d1\u9519\u8bef\u3002<\/p>\n<pre><code class=\"language-javascript\">hello(); \/\/ \u53ef\u4ee5\u5728\u51fd\u6570\u58f0\u660e\u4e4b\u524d\u8c03\u7528\n\nfunction hello() {\n  console.log(&quot;Hello!&quot;);\n}\n<\/code><\/pre>\n<h3><a id=\"%E5%A3%B0%E6%98%8E%E5%8F%98%E9%87%8F%E7%9A%84%E6%8F%90%E5%8D%87%E4%B8%8E%E5%A3%B0%E6%98%8E%E5%87%BD%E6%95%B0%E7%9A%84%E6%8F%90%E5%8D%87%E7%9A%84%E5%8C%BA%E5%88%AB%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u58f0\u660e\u53d8\u91cf\u7684\u63d0\u5347\u4e0e\u58f0\u660e\u51fd\u6570\u7684\u63d0\u5347\u7684\u533a\u522b\uff1a<\/h3>\n<ol>\n<li>\n<p><strong>\u58f0\u660e\u53d8\u91cf\u7684\u63d0\u5347\uff1a<\/strong><br \/>\n\u4f7f\u7528 <code>var<\/code> \u58f0\u660e\u7684\u53d8\u91cf\u4e5f\u4f1a\u88ab\u63d0\u5347\uff0c\u4f46\u53ea\u4f1a\u63d0\u5347\u53d8\u91cf\u7684\u58f0\u660e\uff0c\u4e0d\u4f1a\u63d0\u5347\u8d4b\u503c\u3002<\/p>\n<pre><code class=\"language-javascript\">console.log(x); \/\/ undefined\nvar x = 5;\n<\/code><\/pre>\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c<code>var x;<\/code> \u4f1a\u88ab\u63d0\u5347\uff0c\u4f46\u8d4b\u503c\u64cd\u4f5c\u5e76\u6ca1\u6709\u63d0\u5347\uff0c\u6240\u4ee5 <code>console.log(x);<\/code> \u8f93\u51fa <code>undefined<\/code>\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u58f0\u660e\u51fd\u6570\u7684\u63d0\u5347\uff1a<\/strong><br \/>\n\u51fd\u6570\u58f0\u660e\u4f1a\u88ab\u5b8c\u6574\u5730\u63d0\u5347\uff0c\u5305\u62ec\u51fd\u6570\u4f53\uff0c\u56e0\u6b64\u53ef\u4ee5\u5728\u58f0\u660e\u4e4b\u524d\u8c03\u7528\u8be5\u51fd\u6570\u3002<\/p>\n<pre><code class=\"language-javascript\">hello(); \/\/ \u53ef\u4ee5\u5728\u51fd\u6570\u58f0\u660e\u4e4b\u524d\u8c03\u7528\n\nfunction hello() {\n  console.log(&quot;Hello!&quot;);\n}\n<\/code><\/pre>\n<p>\u5728\u51fd\u6570\u58f0\u660e\u4e2d\uff0c\u6574\u4e2a\u51fd\u6570\u4f53\u88ab\u63d0\u5347\uff0c\u5305\u62ec\u51fd\u6570\u5185\u90e8\u7684\u903b\u8f91\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u603b\u7ed3\uff1a\u51fd\u6570\u58f0\u660e\u4f1a\u88ab\u5b8c\u6574\u5730\u63d0\u5347\u5230\u5f53\u524d\u4f5c\u7528\u57df\u7684\u9876\u90e8\uff0c\u800c\u53d8\u91cf\u58f0\u660e\u4f1a\u63d0\u5347\u4f46\u4e0d\u4f1a\u521d\u59cb\u5316\u8d4b\u503c\u3002\u8fd9\u662f\u51fd\u6570\u58f0\u660e\u548c\u53d8\u91cf\u58f0\u660e\u63d0\u5347\u7684\u533a\u522b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript \u4e2d\u7684\u51fd\u6570\u548c\u53d8\u91cf\u5728\u88ab\u58f0\u660e\u4e4b\u524d\u5c31\u53ef\u4ee5\u88ab\u8bbf\u95ee\u7684\u7279\u6027\u79f0\u4e3a\u201c\u63d0\u5347\u201d\u3002 \u58f0\u660e\u51fd\u6570\u7684\u4f5c\u7528\u63d0\u5347\uff1a \u5728 J [&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-11986","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11986","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=11986"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11986\/revisions"}],"predecessor-version":[{"id":13618,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11986\/revisions\/13618"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11986"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}