{"id":10079,"date":"2023-11-28T21:26:03","date_gmt":"2023-11-28T13:26:03","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10079"},"modified":"2023-11-30T19:11:19","modified_gmt":"2023-11-30T11:11:19","slug":"javascript-zhong-tong-bu-yi-bu","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-tong-bu-yi-bu\/","title":{"rendered":"JavaScript \u4e2d\u540c\u6b65\u5f02\u6b65\uff1f"},"content":{"rendered":"<p>JavaScript \u4e2d\u7684\u540c\u6b65\uff08Synchronous\uff09\u548c\u5f02\u6b65\uff08Asynchronous\uff09\u6307\u7684\u662f\u4ee3\u7801\u6267\u884c\u7684\u65b9\u5f0f\u6216\u6a21\u5f0f\u3002<\/p>\n<h3><a id=\"%E5%90%8C%E6%AD%A5%EF%BC%88synchronous%EF%BC%89%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u540c\u6b65\uff08Synchronous\uff09\uff1a<\/h3>\n<p>\u540c\u6b65\u4ee3\u7801\u662f\u6309\u987a\u5e8f\u6267\u884c\u7684\uff0c\u6bcf\u884c\u4ee3\u7801\u4f9d\u6b21\u6267\u884c\uff0c\u76f4\u5230\u524d\u4e00\u884c\u4ee3\u7801\u6267\u884c\u5b8c\u6210\u540e\u624d\u4f1a\u6267\u884c\u4e0b\u4e00\u884c\u4ee3\u7801\u3002\u5728\u540c\u6b65\u6a21\u5f0f\u4e0b\uff0c\u4ee3\u7801\u4f1a\u963b\u585e\u540e\u7eed\u4ee3\u7801\u7684\u6267\u884c\uff0c\u76f4\u5230\u5f53\u524d\u4ee3\u7801\u6267\u884c\u5b8c\u6bd5\u3002<\/p>\n<pre><code class=\"language-javascript\">console.log('Hello');\nconsole.log('World');\n\/\/ \u8f93\u51fa\uff1aHello\n\/\/ \u7136\u540e\u8f93\u51fa\uff1aWorld\n<\/code><\/pre>\n<h3><a id=\"%E5%BC%82%E6%AD%A5%EF%BC%88asynchronous%EF%BC%89%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u5f02\u6b65\uff08Asynchronous\uff09\uff1a<\/h3>\n<p>\u5f02\u6b65\u4ee3\u7801\u4e0d\u4f1a\u963b\u585e\u540e\u7eed\u4ee3\u7801\u7684\u6267\u884c\uff0c\u5b83\u5141\u8bb8\u5176\u4ed6\u4ee3\u7801\u5728\u67d0\u4e2a\u64cd\u4f5c\u8fdb\u884c\u7684\u540c\u65f6\u7ee7\u7eed\u6267\u884c\u3002\u5728\u5f02\u6b65\u6a21\u5f0f\u4e0b\uff0c\u4ee3\u7801\u4f1a\u5728\u4e0d\u540c\u7684\u65f6\u95f4\u70b9\u6267\u884c\uff0c\u901a\u5e38\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u3001Promise\u3001async\/await \u7b49\u673a\u5236\u6765\u5904\u7406\u5f02\u6b65\u64cd\u4f5c\u3002<\/p>\n<pre><code class=\"language-javascript\">console.log('Start');\nsetTimeout(() =&gt; {\n  console.log('Inside setTimeout');\n}, 2000);\nconsole.log('End');\n\/\/ \u8f93\u51fa\uff1aStart\n\/\/ \u7136\u540e\u8f93\u51fa\uff1aEnd\n\/\/ 2\u79d2\u540e\u8f93\u51fa\uff1aInside setTimeout\n<\/code><\/pre>\n<p>\u5728\u5f02\u6b65\u6a21\u5f0f\u4e2d\uff0c<code>setTimeout<\/code> \u51fd\u6570\u4f1a\u5728 2 \u79d2\u540e\u6267\u884c\u5176\u56de\u8c03\u51fd\u6570\uff0c\u4f46\u4e0d\u4f1a\u963b\u585e\u540e\u7eed\u4ee3\u7801\u7684\u6267\u884c\u3002\u56e0\u6b64\uff0c<code>console.log('End')<\/code> \u4f1a\u5728 <code>setTimeout<\/code> \u4e4b\u540e\u7acb\u5373\u6267\u884c\u3002<\/p>\n<p>JavaScript \u4e2d\u5f02\u6b65\u7684\u5e38\u89c1\u64cd\u4f5c\u5305\u62ec\u5f02\u6b65 I\/O \u64cd\u4f5c\uff08\u5982 AJAX \u8bf7\u6c42\u3001\u6587\u4ef6\u8bfb\u53d6\u7b49\uff09\u3001\u5b9a\u65f6\u5668\uff08<code>setTimeout<\/code>\u3001<code>setInterval<\/code>\uff09\u3001\u4e8b\u4ef6\u76d1\u542c\u5668\u7b49\u3002\u5f02\u6b65\u7f16\u7a0b\u5141\u8bb8\u5728\u5904\u7406\u8017\u65f6\u7684\u64cd\u4f5c\u65f6\u4e0d\u963b\u585e\u4e3b\u7ebf\u7a0b\uff0c\u63d0\u9ad8\u4e86\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript \u4e2d\u7684\u540c\u6b65\uff08Synchronous\uff09\u548c\u5f02\u6b65\uff08Asynchronous\uff09\u6307\u7684\u662f\u4ee3\u7801\u6267\u884c\u7684\u65b9\u5f0f [&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-10079","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10079","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=10079"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10079\/revisions"}],"predecessor-version":[{"id":13676,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10079\/revisions\/13676"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10079"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}