{"id":2347,"date":"2019-05-04T20:38:51","date_gmt":"2019-05-04T12:38:51","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=2347"},"modified":"2020-04-15T21:31:51","modified_gmt":"2020-04-15T13:31:51","slug":"%e4%ba%8b%e4%bb%b6%e5%be%aa%e7%8e%af%e6%9c%ba%e5%88%b6%e7%9a%84%e9%82%a3%e4%ba%9b%e4%ba%8b","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=2347","title":{"rendered":"\u4e8b\u4ef6\u5faa\u73af\u673a\u5236\u7684\u90a3\u4e9b\u4e8b"},"content":{"rendered":"<h3>\u5199\u5728\u524d\u9762<\/h3>\n<p>\u6821\u62db\u7b14\u8bd5\u4e2d\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u8fd9\u6837\u4e00\u4e2a\u95ee\u9898\uff1a<\/p>\n<pre><code class=\"language-js\" lang=\"js\">\/\/\u5199\u51fa\u4e0b\u9762\u4ee3\u7801\u7684\u8fd0\u884c\u7ed3\u679c\uff1a\r\nconsole.log('1');\r\nsetTimeout(function () {\r\n    console.log('2');\r\n}, 0);\r\nsetTimeout(function () {\r\n    console.log('3');\r\n}, 2000);\r\nconsole.log('4');\r\n<\/code><\/pre>\n<p>\u770b\u5b8c\u8fd9\u9053\u9898\u7684\u6211\u81ea\u4fe1\u7684\u5199\u4e0b\u4e86\u7b54\u6848\uff1a <code>1,2,4,3<\/code><\/p>\n<p>\u9762\u8bd5\u5b98\uff1a\u4e3a\u4ec0\u4e48\u662f\u8fd9\u4e2a\u7b54\u6848\uff1f<\/p>\n<p>\u6211\uff1a\u9996\u5148\u6253\u5370 <code>1<\/code>\uff0c\u9047\u5230\u5b9a\u65f6\u5668\uff0c\u7b49\u5f85\u65f6\u95f4\u4e3a0\uff0c\u6240\u4ee5\u6253\u5370 <code>2<\/code>\uff0c\u53c8\u9047\u5230\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u7b49\u5f85\u65f6\u95f4\u4e3a2\u79d2\uff0c\u6240\u4ee5\u5148\u6253\u5370 <code>4<\/code>\uff0c\u4e24\u79d2\u540e\u6253\u5370 <code>3<\/code>\u3002<\/p>\n<p>\u7136\u540e\u5c31&#8230;&#8230;<\/p>\n<p>\u4e0e\u8fd9\u6bb5\u4ee3\u7801\u76f8\u5173\u7684\u77e5\u8bc6\u70b9\u5c31\u662f<strong>JavaScript\u4e8b\u4ef6\u5faa\u73af\u673a\u5236<\/strong>\uff0c\u4e0b\u9762\u5c06\u4ece\u6709\u5173\u7684\u57fa\u672c\u6982\u5ff5\u51fa\u53d1\uff0c\u5148\u4e86\u89e3\u4e86\u76f8\u5173\u7684\u6982\u5ff5\uff0c\u624d\u80fd\u66f4\u597d\u7684\u7406\u89e3\u4e8b\u4ef6\u5faa\u73af\u7684\u673a\u5236\u539f\u7406\u3002\u4ee5\u4e0b\u90fd\u662f\u81ea\u5df1\u7684\u4e2a\u4eba\u7406\u89e3\uff0c\u5982\u6709\u4e0d\u6b63\u786e\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u533a\u62cd\u7816\u3002<\/p>\n<h3>\u7ebf\u7a0b\u4e0e\u8fdb\u7a0b<\/h3>\n<p>\u5173\u4e8e\u7ebf\u7a0b\u4e0e\u8fdb\u7a0b\u7684\u5173\u7cfb\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u56fe\u8fdb\u884c\u8bf4\u660e\uff1a<\/p>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212643.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2758\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212643.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212643\" width=\"424\" height=\"186\" \/><\/a><\/p>\n<ul>\n<li>\u8fdb\u7a0b\u597d\u6bd4\u56fe\u4e2d\u7684\u5de5\u5382\uff0c\u6709\u5355\u72ec\u7684\u4e13\u5c5e\u81ea\u5df1\u7684\u5de5\u5382\u8d44\u6e90\u3002<\/li>\n<li>\u7ebf\u7a0b\u597d\u6bd4\u56fe\u4e2d\u7684\u5de5\u4eba\uff0c\u591a\u4e2a\u5de5\u4eba\u5728\u4e00\u4e2a\u5de5\u5382\u4e2d\u534f\u4f5c\u5de5\u4f5c\uff0c\u5de5\u5382\u4e0e\u5de5\u4eba\u662f <code>1:n<\/code>\u7684\u5173\u7cfb\u3002<\/li>\n<li>\u591a\u4e2a\u5de5\u5382\u4e4b\u95f4\u72ec\u7acb\u5b58\u5728\u3002<\/li>\n<\/ul>\n<p>\u800c\u5b98\u65b9\u7684\u8bf4\u6cd5\u662f\uff1a<\/p>\n<ul>\n<li>\u8fdb\u7a0b\u662f <code>CPU<\/code>\u8d44\u6e90\u5206\u914d\u7684\u6700\u5c0f\u5355\u4f4d\u3002<\/li>\n<li>\u7ebf\u7a0b\u662f <code>CPU<\/code>\u8c03\u5ea6\u7684\u6700\u5c0f\u5355\u4f4d\u3002<\/li>\n<\/ul>\n<p>\u4ece\u66f4\u76f4\u89c2\u7684\u4f8b\u5b50\u6765\u770b\uff0c\u53ef\u4ee5\u6253\u5f00\u4efb\u52a1\u7ba1\u7406\u5668\u67e5\u770b\uff0c\u7b2c\u4e00\u4e2a <code>tab<\/code>\u4fbf\u662f\u8fdb\u7a0b\u5217\u8868\uff0c\u6bcf\u4e00\u4e2a\u8fdb\u7a0b\u5360\u6709\u7684 <code>CPU<\/code>\u8d44\u6e90\u548c\u5185\u5b58\u8d44\u6e90\u7684\u6bd4\u4f8b\u5f88\u76f4\u89c2\u7684\u5c55\u793a\u51fa\u6765\u3002<\/p>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212721.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2759\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212721.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212721\" width=\"903\" height=\"311\" \/><\/a><\/p>\n<h3>\u4e3a\u4ec0\u4e48js\u662f\u5355\u7ebf\u7a0b<\/h3>\n<p>\u521d\u5b66\u8ba1\u7b97\u673a\u8bed\u8a00\u7684\u65f6\u5019\uff0c\u65e0\u8bba\u662f <code>C\u3001C++<\/code>\u8fd8\u662f <code>JAVA<\/code>\uff0c\u90fd\u662f\u652f\u6301\u591a\u7ebf\u7a0b\uff0c\u504f\u504f <code>JavaScript<\/code>\u662f\u5355\u7ebf\u7a0b\uff0c\u4e0d\u652f\u6301\u591a\u7ebf\u7a0b\uff0c\u8fd9\u4e5f\u8ddf <code>JavaScript<\/code>\u7684\u4f5c\u7528\u6709\u5173\uff0c\u90fd\u77e5\u9053 <code>JavaScript<\/code>\u662f\u4e3b\u8981\u8fd0\u884c\u5728\u6d4f\u89c8\u5668\u7684\u811a\u672c\u8bed\u8a00\uff0c\u6700\u7ec8\u64cd\u4f5c\u7684\u662f\u9875\u9762\u7684 <code>DOM<\/code>\u7ed3\u6784\uff0c\u5f53\u4e24\u4e2a <code>JavaScript<\/code>\u811a\u672c\u540c\u65f6\u4fee\u6539\u9875\u9762\u7684\u540c\u4e00\u4e2a <code>DOM<\/code>\u8282\u70b9\u65f6\uff0c\u6d4f\u89c8\u5668\u8be5\u6267\u884c\u54ea\u4e2a\u5462\uff1f\u6240\u4ee5\u5f53\u65f6\u8bbe\u8ba1 <code>JavaScript<\/code>\u65f6\uff0c\u4fbf\u8981\u6c42\u5f53\u524d\u4fee\u6539\u64cd\u4f5c\u5b8c\u6210\u540e\u65b9\u53ef\u8fdb\u884c\u4e0b\u4e00\u6b65\u4fee\u6539\u64cd\u4f5c\u3002<\/p>\n<h3>\u6d4f\u89c8\u5668\u662f\u652f\u6301\u591a\u8fdb\u7a0b<\/h3>\n<p>\u540c\u6837\u6211\u4eec\u6253\u5f00\u6d4f\u89c8\u5668\u7684\u4efb\u52a1\u7ba1\u7406\u5668\uff0c\u4ee5\u4e0b\u56fe\u4e3a\u4f8b\uff1a<\/p>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212740.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2760\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212740.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212740\" width=\"714\" height=\"301\" \/><\/a><\/p>\n<p>\u6d4f\u89c8\u5668\u7684\u6bcf\u4e00\u4e2a <code>tab<\/code>\u9875\u90fd\u662f\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u6709\u5bf9\u5e94\u7684\u5185\u5b58\u5360\u7528\u7a7a\u95f4\u3001 <code>CPU<\/code>\u4f7f\u7528\u91cf\u4ee5\u53ca\u8fdb\u7a0bID\u3002 \u65b0\u6253\u5f00\u4e00\u4e2a <code>tab<\/code>\u9875\u65f6\uff0c\u90fd\u4f1a\u65b0\u5efa\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u6240\u4ee5\u5c31\u6709\u4e00\u4e2a <code>tab<\/code>\u9875\u5bf9\u5e94\u4e00\u4e2a\u8fdb\u7a0b\u7684\u8bf4\u6cd5\uff0c\u4f46\u662f\u8fd9\u79cd\u8bf4\u6cd5\u53c8\u662f\u9519\u8bef\u7684\uff0c\u56e0\u4e3a\u6d4f\u89c8\u5668\u6709\u81ea\u5df1\u7684\u4f18\u5316\u673a\u5236\uff0c\u5f53\u6211\u4eec\u6253\u5f00\u591a\u4e2a\u7a7a\u767d\u7684 <code>tab<\/code>\u9875\u65f6\uff0c\u6d4f\u89c8\u5668\u4f1a\u5c06\u8fd9\u591a\u4e2a\u7a7a\u767d\u9875\u7684\u8fdb\u7a0b\u5408\u5e76\u4e3a\u4e00\u4e2a\uff0c\u4ece\u800c\u51cf\u5c11\u4e86\u8fdb\u7a0b\u7684\u6570\u91cf\u4e2a\u6570\u3002<\/p>\n<h3>\u6d4f\u89c8\u5668\u5185\u6838<\/h3>\n<p>\u6d4f\u89c8\u5668\u5185\u6838\u4e2d\u6709\u591a\u4e2a\u8fdb\u7a0b\u5728\u540c\u6b65\u5de5\u4f5c\uff0c\u4eca\u5929\u6d89\u53ca\u5230\u7684\u6d4f\u89c8\u5668\u7684\u8fdb\u7a0b\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u8fdb\u7a0b\uff1a<\/p>\n<ul>\n<li>Browser \u8fdb\u7a0b<\/li>\n<\/ul>\n<blockquote><p>\u4e3b\u8fdb\u7a0b\uff0c\u4e3b\u8981\u8d1f\u8d23\u9875\u9762\u7ba1\u7406\u4ee5\u53ca\u7ba1\u7406\u5176\u4ed6\u8fdb\u7a0b\u7684\u521b\u5efa\u548c\u9500\u6bc1\u7b49\uff0c\u5e38\u9a7b\u7684\u7ebf\u7a0b\u6709\uff1a<\/p>\n<ul>\n<li>GUI\u6e32\u67d3\u7ebf\u7a0b<\/li>\n<li>JS\u5f15\u64ce\u7ebf\u7a0b<\/li>\n<li>\u4e8b\u4ef6\u89e6\u53d1\u7ebf\u7a0b<\/li>\n<li>\u5b9a\u65f6\u5668\u89e6\u53d1\u7ebf\u7a0b<\/li>\n<li>HTTP\u8bf7\u6c42\u7ebf\u7a0b<\/li>\n<\/ul>\n<p><strong>GUI\u6e32\u67d3\u7ebf\u7a0b<\/strong><\/p>\n<ul>\n<li>\u4e3b\u8981\u8d1f\u8d23\u9875\u9762\u7684\u6e32\u67d3\uff0c\u89e3\u6790HTML\u3001CSS\uff0c\u6784\u5efaDOM\u6811\uff0c\u5e03\u5c40\u548c\u7ed8\u5236\u7b49\u3002<\/li>\n<li>\u5f53\u754c\u9762\u9700\u8981\u91cd\u7ed8\u6216\u8005\u7531\u4e8e\u67d0\u79cd\u64cd\u4f5c\u5f15\u53d1\u56de\u6d41\u65f6\uff0c\u5c06\u6267\u884c\u8be5\u7ebf\u7a0b\u3002<\/li>\n<li>\u8be5\u7ebf\u7a0b\u4e0eJS\u5f15\u64ce\u7ebf\u7a0b\u4e92\u65a5\uff0c\u5f53\u6267\u884cJS\u5f15\u64ce\u7ebf\u7a0b\u65f6\uff0cGUI\u6e32\u67d3\u4f1a\u88ab\u6302\u8d77\uff0c\u5f53\u4efb\u52a1\u961f\u5217\u7a7a\u95f2\u65f6\uff0cJS\u5f15\u64ce\u624d\u4f1a\u53bb\u6267\u884cGUI\u6e32\u67d3\u3002<\/li>\n<\/ul>\n<p><strong>JS\u5f15\u64ce\u7ebf\u7a0b<\/strong><\/p>\n<ul>\n<li>\u8be5\u7ebf\u7a0b\u5f53\u7136\u662f\u4e3b\u8981\u8d1f\u8d23\u5904\u7406 <code>JavaScript<\/code>\u811a\u672c\uff0c\u6267\u884c\u4ee3\u7801\u3002<\/li>\n<li>\u4e5f\u662f\u4e3b\u8981\u8d1f\u8d23\u6267\u884c\u51c6\u5907\u597d\u5f85\u6267\u884c\u7684\u4e8b\u4ef6\uff0c\u5373\u5b9a\u65f6\u5668\u8ba1\u6570\u7ed3\u675f\uff0c\u6216\u8005\u5f02\u6b65\u8bf7\u6c42\u6210\u529f\u5e76\u6b63\u786e\u8fd4\u56de\u65f6\uff0c\u5c06\u4f9d\u6b21\u8fdb\u5165\u4efb\u52a1\u961f\u5217\uff0c\u7b49\u5f85 <code>JS\u5f15\u64ce\u7ebf\u7a0b<\/code>\u7684\u6267\u884c\u3002<\/li>\n<li>\u5f53\u7136\uff0c\u8be5\u7ebf\u7a0b\u4e0e <code>GUI\u6e32\u67d3\u7ebf\u7a0b<\/code>\u4e92\u65a5\uff0c\u5f53 <code>JS\u5f15\u64ce\u7ebf\u7a0b<\/code>\u6267\u884c <code>JavaScript<\/code>\u811a\u672c\u65f6\u95f4\u8fc7\u957f\uff0c\u5c06\u5bfc\u81f4\u9875\u9762\u6e32\u67d3\u7684\u963b\u585e\u3002<\/li>\n<\/ul>\n<p><strong>\u4e8b\u4ef6\u89e6\u53d1\u7ebf\u7a0b<\/strong><\/p>\n<ul>\n<li>\u4e3b\u8981\u8d1f\u8d23\u5c06\u51c6\u5907\u597d\u7684\u4e8b\u4ef6\u4ea4\u7ed9 <code>JS\u5f15\u64ce\u7ebf\u7a0b<\/code>\u6267\u884c\u3002<\/li>\n<li>\u6bd4\u5982 <code>setTimeout<\/code>\u5b9a\u65f6\u5668\u8ba1\u6570\u7ed3\u675f\uff0c <code>ajax<\/code>\u7b49\u5f02\u6b65\u8bf7\u6c42\u6210\u529f\u5e76\u89e6\u53d1\u56de\u8c03\u51fd\u6570\uff0c\u6216\u8005\u7528\u6237\u89e6\u53d1\u70b9\u51fb\u4e8b\u4ef6\u65f6\uff0c\u8be5\u7ebf\u7a0b\u4f1a\u5c06\u6574\u88c5\u5f85\u53d1\u7684\u4e8b\u4ef6\u4f9d\u6b21\u52a0\u5165\u5230\u4efb\u52a1\u961f\u5217\u7684\u961f\u5c3e\uff0c\u7b49\u5f85 <code>JS\u5f15\u64ce\u7ebf\u7a0b<\/code>\u7684\u6267\u884c\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9a\u65f6\u5668\u89e6\u53d1\u7ebf\u7a0b<\/strong><\/p>\n<ul>\n<li>\u987e\u540d\u601d\u4e49\uff0c\u8d1f\u8d23\u6267\u884c\u5f02\u6b65\u5b9a\u65f6\u5668\u4e00\u7c7b\u7684\u51fd\u6570\u7684\u7ebf\u7a0b\uff0c\u5982\uff1a <code>setTimeout\uff0csetInterval<\/code>\u3002<\/li>\n<li>\u4e3b\u7ebf\u7a0b\u4f9d\u6b21\u6267\u884c\u4ee3\u7801\u65f6\uff0c\u9047\u5230\u5b9a\u65f6\u5668\uff0c\u4f1a\u5c06\u5b9a\u65f6\u5668\u4ea4\u7ed9\u8be5\u7ebf\u7a0b\u5904\u7406\uff0c\u5f53\u8ba1\u6570\u5b8c\u6bd5\u540e\uff0c\u4e8b\u4ef6\u89e6\u53d1\u7ebf\u7a0b\u4f1a\u5c06\u8ba1\u6570\u5b8c\u6bd5\u540e\u7684\u4e8b\u4ef6\u52a0\u5165\u5230\u4efb\u52a1\u961f\u5217\u7684\u5c3e\u90e8\uff0c\u7b49\u5f85JS\u5f15\u64ce\u7ebf\u7a0b\u6267\u884c\u3002<\/li>\n<\/ul>\n<p><strong>HTTP\u8bf7\u6c42\u7ebf\u7a0b<\/strong><\/p>\n<ul>\n<li>\u987e\u540d\u601d\u4e49\uff0c\u8d1f\u8d23\u6267\u884c\u5f02\u6b65\u8bf7\u6c42\u4e00\u7c7b\u7684\u51fd\u6570\u7684\u7ebf\u7a0b\uff0c\u5982\uff1a <code>Promise\uff0canxios\uff0cajax<\/code>\u7b49\u3002<\/li>\n<li>\u4e3b\u7ebf\u7a0b\u4f9d\u6b21\u6267\u884c\u4ee3\u7801\u65f6\uff0c\u9047\u5230\u5f02\u6b65\u8bf7\u6c42\uff0c\u4f1a\u5c06\u51fd\u6570\u4ea4\u7ed9\u8be5\u7ebf\u7a0b\u5904\u7406\uff0c\u5f53\u76d1\u542c\u5230\u72b6\u6001\u7801\u53d8\u66f4\uff0c\u5982\u679c\u6709\u56de\u8c03\u51fd\u6570\uff0c\u4e8b\u4ef6\u89e6\u53d1\u7ebf\u7a0b\u4f1a\u5c06\u56de\u8c03\u51fd\u6570\u52a0\u5165\u5230\u4efb\u52a1\u961f\u5217\u7684\u5c3e\u90e8\uff0c\u7b49\u5f85JS\u5f15\u64ce\u7ebf\u7a0b\u6267\u884c\u3002<\/li>\n<\/ul>\n<p><strong>\u591a\u4e2a\u7ebf\u7a0b\u4e4b\u95f4\u914d\u5408\u5de5\u4f5c\uff0c\u5404\u53f8\u5176\u804c\u3002<\/strong><\/p><\/blockquote>\n<ul>\n<li>Render \u8fdb\u7a0b<\/li>\n<\/ul>\n<blockquote><p>\u6d4f\u89c8\u5668\u6e32\u67d3\u8fdb\u7a0b\uff08\u6d4f\u89c8\u5668\u5185\u6838\uff09\uff0c\u4e3b\u8981\u8d1f\u8d23\u9875\u9762\u7684\u6e32\u67d3\u3001JS\u6267\u884c\u4ee5\u53ca\u4e8b\u4ef6\u7684\u5faa\u73af\u3002<\/p><\/blockquote>\n<h3>\u540c\u6b65\u4efb\u52a1\u548c\u5f02\u6b65\u4efb\u52a1<\/h3>\n<ul>\n<li><strong>\u540c\u6b65\u4efb\u52a1<\/strong> \u5373\u53ef\u4ee5\u7acb\u5373\u6267\u884c\u7684\u4efb\u52a1\uff0c\u4f8b\u5982 <code>console.log()<\/code> \u6253\u5370\u4e00\u6761\u65e5\u5fd7\u3001\u58f0\u660e\u4e00\u4e2a\u53d8\u91cf\u6216\u8005\u6267\u884c\u4e00\u6b21\u52a0\u6cd5\u64cd\u4f5c\u7b49\u3002<\/li>\n<li><strong>\u5f02\u6b65\u4efb\u52a1<\/strong> \u76f8\u53cd\u4e0d\u4f1a\u7acb\u5373\u6267\u884c\u7684\u4e8b\u4ef6\u4efb\u52a1\u3002<strong>\u5f02\u6b65\u4efb\u52a1<\/strong>\u5305\u62ec<strong>\u5b8f\u4efb\u52a1<\/strong>\u548c<strong>\u5fae\u4efb\u52a1<\/strong>(\u540e\u9762\u4f1a\u8fdb\u884c\u89e3\u91ca~)\u3002<\/li>\n<li>\u5e38\u89c1\u7684\u5f02\u6b65\u64cd\u4f5c\uff1a\n<ul>\n<li>Ajax<\/li>\n<li>DOM\u7684\u4e8b\u4ef6\u64cd\u4f5c<\/li>\n<li>setTimeout<\/li>\n<li>Promise\u7684then\u65b9\u6cd5<\/li>\n<li>Node\u7684\u8bfb\u53d6\u6587\u4ef6<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u4e0b\u56fe\u7ed9\u51fa\u4e86\u540c\u6b65\u4efb\u52a1\u4e0e\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u6d41\u7a0b\uff1a<\/p>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212805.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2761\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212805.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212805\" width=\"644\" height=\"710\" \/><\/a><\/p>\n<ul>\n<li><strong>\u6808<\/strong> \u5c31\u50cf\u662f\u4e00\u4e2a\u5bb9\u5668\uff0c\u4efb\u52a1\u90fd\u662f\u5728\u6808\u4e2d\u6267\u884c\u3002<\/li>\n<li><strong>\u4e3b\u7ebf\u7a0b<\/strong> \u5c31\u50cf\u662f\u64cd\u4f5c\u5458\uff0c\u8d1f\u8d23\u6267\u884c\u6808\u4e2d\u7684\u4efb\u52a1\u3002<\/li>\n<li><strong>\u4efb\u52a1\u961f\u5217<\/strong> \u5c31\u50cf\u662f\u7b49\u5f85\u88ab\u52a0\u5de5\u7684\u7269\u54c1\u3002<\/li>\n<li>\u5f02\u6b65\u4efb\u52a1\u5b8c\u6210\u6ce8\u518c\u540e\u4f1a\u5c06\u56de\u8c03\u51fd\u6570\u52a0\u5165\u4efb\u52a1\u961f\u5217\u7b49\u5f85\u4e3b\u7ebf\u7a0b\u6267\u884c\u3002<\/li>\n<li>\u6267\u884c\u6808\u4e2d\u7684\u540c\u6b65\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\u540e\uff0c\u4f1a\u67e5\u770b\u5e76\u8bfb\u53d6\u4efb\u52a1\u961f\u5217\u4e2d\u7684\u4e8b\u4ef6\u51fd\u6570\uff0c\u4e8e\u662f\u4efb\u52a1\u961f\u5217\u7684\u51fd\u6570\u7ed3\u675f\u7b49\u5f85\u72b6\u6001\uff0c\u8fdb\u5165\u6267\u884c\u6808\uff0c\u5f00\u59cb\u6267\u884c\u3002<\/li>\n<\/ul>\n<p>\u90a3\u4e48\u4efb\u52a1\u5230\u5e95\u662f\u5982\u4f55\u5165\u6808\u548c\u51fa\u6808\u7684\u5462\uff1f\u53ef\u4ee5\u7528\u4e00\u5c0f\u6bb5\u4ee3\u7801\u8fdb\u884c\u89e3\u91ca\u3002<\/p>\n<h3>\u5165\u6808\u4e0e\u51fa\u6808<\/h3>\n<p>\u4ee5\u4e0b\u9762\u7684\u4ee3\u7801\u4e3a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-js\" lang=\"js\">console.log(1);\r\n\r\nfunction fn1() {\r\n    console.log(2);\r\n}\r\n\r\nfunction fn2() {\r\n    console.log(3);\r\n    fn1();\r\n}\r\nsetTimeout(function () {\r\n    console.log(4);\r\n}, 2000);\r\nfn2();\r\nconsole.log(5);\r\n<\/code><\/pre>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415213057.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2768\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415213057.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415213057\" width=\"782\" height=\"881\" \/><\/a><\/p>\n<p>\u6240\u4ee5\u4e0a\u9762\u4ee3\u7801\u8fd0\u884c\u7684\u7ed3\u679c\u4e3a\uff1a1,3,2,5,4\u3002<\/p>\n<h3>\u5b8f\u4efb\u52a1\u548c\u5fae\u4efb\u52a1<\/h3>\n<p>\u5f02\u6b65\u4efb\u52a1\u5206\u4e3a\u5b8f\u4efb\u52a1\u548c\u5fae\u4efb\u52a1\uff0c\u5b8f\u4efb\u52a1\u961f\u5217\u53ef\u4ee5\u6709\u591a\u4e2a\uff0c\u5fae\u4efb\u52a1\u961f\u5217\u53ea\u6709\u4e00\u4e2a\u3002<\/p>\n<p><strong>\u5b8f\u4efb\u52a1\u548c\u5fae\u4efb\u52a1\u7684\u6267\u884c\u65b9\u5f0f\u5728\u6d4f\u89c8\u5668\u548c Node \u4e2d\u6709\u5dee\u5f02\u3002<\/strong><\/p>\n<h4>\u5b8f\u4efb\u52a1\uff08macrotask\uff09<\/h4>\n<blockquote><p><code>script<\/code>(\u5168\u5c40\u4efb\u52a1)\uff0c <code>setTimeout<\/code>\uff0c <code>setInterval<\/code>\uff0c <code>setImmediate<\/code>\uff0c <code>I\/O<\/code>\uff0c <code>UI rendering<\/code><\/p><\/blockquote>\n<h4>\u5fae\u4efb\u52a1\uff08macrotask\uff09<\/h4>\n<blockquote><p><code>process.nextTick<\/code>\uff0c <code>Promise.then()<\/code>\uff0c <code>Object.observe<\/code>\uff0c <code>MutationObserver<\/code><\/p><\/blockquote>\n<p><strong>\u5728\u5fae\u4efb\u52a1\u4e2d process.nextTick \u4f18\u5148\u7ea7\u9ad8\u4e8ePromise<\/strong><\/p>\n<p>\u5f53\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u5165\u6808\u65f6\uff0c\u4e3b\u7ebf\u7a0b\u5224\u65ad\u8be5\u4efb\u52a1\u4e3a\u5f02\u6b65\u4efb\u52a1\uff0c\u5e76\u628a\u8be5\u4efb\u52a1\u4ea4\u7ed9\u5f02\u6b65\u5904\u7406\u6a21\u5757\u5904\u7406\uff0c\u5f53\u5f02\u6b65\u5904\u7406\u6a21\u5757\u5904\u7406\u5b8c\u6253\u5230\u89e6\u53d1\u6761\u4ef6\u65f6\uff0c\u6839\u636e\u4efb\u52a1\u7684\u7c7b\u578b\uff0c\u5c06\u56de\u8c03\u51fd\u6570\u538b\u5165\u4efb\u52a1\u961f\u5217\u3002<\/p>\n<ul>\n<li>\u5982\u679c\u662f\u5b8f\u4efb\u52a1\uff0c\u5219\u65b0\u589e\u4e00\u4e2a\u5b8f\u4efb\u52a1\u961f\u5217\uff0c\u4efb\u52a1\u961f\u5217\u4e2d\u7684\u5b8f\u4efb\u52a1\u53ef\u4ee5\u6709\u591a\u4e2a\u6765\u6e90\u3002<\/li>\n<li>\u5982\u679c\u662f\u5fae\u4efb\u52a1\uff0c\u5219\u76f4\u63a5\u538b\u5165\u5fae\u4efb\u52a1\u961f\u5217\u3002<\/li>\n<\/ul>\n<p>\u6240\u4ee5\u4e0a\u56fe\u7684\u4efb\u52a1\u961f\u5217\u53ef\u4ee5\u7ee7\u7eed\u7ec6\u5316\u4e00\u4e0b\uff1a<\/p>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212828.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2762\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212828.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212828\" width=\"429\" height=\"396\" \/><\/a><\/p>\n<p>\u90a3\u4e48\u5f53\u6808\u4e3a\u7a7a\u65f6\uff0c\u5b8f\u4efb\u52a1\u548c\u5fae\u4efb\u52a1\u7684\u6267\u884c\u673a\u5236\u53c8\u662f\u4ec0\u4e48\u5462\uff1f<\/p>\n<h3>Event Loop<\/h3>\n<p>\u5230\u8fd9\u91cc\uff0c\u9664\u4e86\u4e0a\u9762\u7684\u95ee\u9898\uff0c\u6211\u4eec\u5df2\u7ecf\u628a\u4e8b\u4ef6\u5faa\u73af\u7684\u6700\u57fa\u672c\u7684\u5904\u7406\u65b9\u5f0f\u641e\u6e05\u695a\u4e86\uff0c\u4f46\u5177\u4f53\u5230\u5f02\u6b65\u4efb\u52a1\u4e2d\u7684\u5b8f\u4efb\u52a1\u548c\u5fae\u4efb\u52a1\uff0c\u8fd8\u6ca1\u6709\u5f04\u660e\u767d\u3002\u6211\u4eec\u53ef\u4ee5\u5148\u987a\u4e00\u904d\u6267\u884c\u673a\u5236\uff1a<\/p>\n<ul>\n<li>\u4ece\u5168\u5c40\u4efb\u52a1 <code>script<\/code>\u5f00\u59cb\uff0c\u4efb\u52a1\u4f9d\u6b21\u8fdb\u5165\u6808\u4e2d\uff0c\u88ab\u4e3b\u7ebf\u7a0b\u6267\u884c\uff0c\u6267\u884c\u5b8c\u540e\u51fa\u6808\u3002<\/li>\n<li>\u9047\u5230\u5f02\u6b65\u4efb\u52a1\uff0c\u4ea4\u7ed9\u5f02\u6b65\u5904\u7406\u6a21\u5757\u5904\u7406\uff0c\u5bf9\u5e94\u7684\u5f02\u6b65\u5904\u7406\u7ebf\u7a0b\u5904\u7406\u5f02\u6b65\u4efb\u52a1\u9700\u8981\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u5b9a\u65f6\u5668\u7684\u8ba1\u6570\u548c\u5f02\u6b65\u8bf7\u6c42\u76d1\u542c\u72b6\u6001\u7684\u53d8\u66f4\u3002<\/li>\n<li>\u5f53\u5f02\u6b65\u4efb\u52a1\u8fbe\u5230\u53ef\u6267\u884c\u72b6\u6001\u65f6\uff0c\u4e8b\u4ef6\u89e6\u53d1\u7ebf\u7a0b\u5c06\u56de\u8c03\u51fd\u6570\u52a0\u5165\u4efb\u52a1\u961f\u5217\uff0c\u7b49\u5f85\u6808\u4e3a\u7a7a\u65f6\uff0c\u4f9d\u6b21\u8fdb\u5165\u6808\u4e2d\u6267\u884c\u3002<\/li>\n<\/ul>\n<p>\u5230\u8fd9\u95ee\u9898\u5c31\u6765\u4e86\uff0c\u5f53\u5f02\u6b65\u4efb\u52a1\u8fdb\u5165\u6808\u6267\u884c\u65f6\uff0c\u662f\u5b8f\u4efb\u52a1\u8fd8\u662f\u5fae\u4efb\u52a1\u5462\uff1f<\/p>\n<ul>\n<li>\u7531\u4e8e\u6267\u884c\u4ee3\u7801\u5165\u53e3\u90fd\u662f\u5168\u5c40\u4efb\u52a1 <code>script<\/code>\uff0c\u800c\u5168\u5c40\u4efb\u52a1\u5c5e\u4e8e\u5b8f\u4efb\u52a1\uff0c\u6240\u4ee5\u5f53\u6808\u4e3a\u7a7a\uff0c\u540c\u6b65\u4efb\u52a1\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\u65f6\uff0c\u4f1a\u5148\u6267\u884c\u5fae\u4efb\u52a1\u961f\u5217\u91cc\u7684\u4efb\u52a1\u3002<\/li>\n<li>\u5fae\u4efb\u52a1\u961f\u5217\u91cc\u7684\u4efb\u52a1\u5168\u90e8\u6267\u884c\u5b8c\u6bd5\u540e\uff0c\u4f1a\u8bfb\u53d6\u5b8f\u4efb\u52a1\u961f\u5217\u4e2d\u62cd\u6700\u524d\u7684\u4efb\u52a1\u3002<\/li>\n<li>\u6267\u884c\u5b8f\u4efb\u52a1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u9047\u5230\u5fae\u4efb\u52a1\uff0c\u4f9d\u6b21\u52a0\u5165\u5fae\u4efb\u52a1\u961f\u5217\u3002<\/li>\n<li>\u6808\u7a7a\u540e\uff0c\u518d\u6b21\u8bfb\u53d6\u5fae\u4efb\u52a1\u961f\u5217\u91cc\u7684\u4efb\u52a1\uff0c\u4f9d\u6b21\u7c7b\u63a8\u3002<\/li>\n<\/ul>\n<h3>\u5b9e\u4f8b\u89e3\u6790<\/h3>\n<p>\u56de\u5230\u6700\u5f00\u59cb\u7684\u90a3\u6bb5\u4ee3\u7801\uff0c\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u4e00\u6b65\u4e00\u6b65\u7684\u770b\u4e00\u4e0b\u6267\u884c\u987a\u5e8f\u3002<\/p>\n<pre><code class=\"language-js\" lang=\"js\">console.log('1');\r\nsetTimeout(function () {\r\n    console.log('2');\r\n}, 0);\r\nsetTimeout(function () {\r\n    console.log('3');\r\n}, 2000);\r\nconsole.log('4');\r\n<\/code><\/pre>\n<ul>\n<li>\u4ece\u5168\u5c40\u4efb\u52a1\u5165\u53e3\uff0c\u9996\u5148\u6253\u5370\u65e5\u5fd7 <code>1<\/code>\uff0c<\/li>\n<li>\u9047\u5230\u5b8f\u4efb\u52a1 <code>setTimeout<\/code>\uff0c\u4ea4\u7ed9\u5f02\u6b65\u5904\u7406\u6a21\u5757\uff0c\u6211\u4eec\u6682\u4e14\u5148\u8bb0\u4e3a <code>setTimeout1<\/code>\uff0c<\/li>\n<li>\u518d\u6b21\u9047\u5230\u5b8f\u4efb\u52a1 <code>setTimeout<\/code>\uff0c\u4ea4\u7ed9\u5f02\u6b65\u5904\u7406\u6a21\u5757\uff0c\u6211\u4eec\u6682\u4e14\u5148\u8bb0\u4e3a <code>setTimeout2<\/code>\uff0c<\/li>\n<li>\u987a\u5e8f\u6267\u884c\uff0c\u6253\u5370\u65e5\u5fd7 <code>4<\/code>\uff0c<\/li>\n<li>\u6b64\u65f6\u540c\u6b65\u4efb\u52a1\u5df2\u6267\u884c\u5b8c\u6bd5\uff0c\u8bfb\u53d6\u5b8f\u4efb\u52a1\u961f\u5217\u7684\u4efb\u52a1\uff0c\u5148\u6267\u884c <code>setTimeout1<\/code>\u7684\u56de\u8c03\u51fd\u6570\uff0c\u56e0\u4e3a\u5b9a\u65f6\u5668\u7684\u7b49\u5f85\u65f6\u95f4\u4e3a <code>0<\/code>\u79d2\uff0c\u6240\u4ee5\u4f1a\u76f4\u63a5\u8f93\u51fa <code>2<\/code>\uff0c\u4f46\u662f <code>W3C<\/code>\u5728 <code>HTML<\/code>\u6807\u51c6\u4e2d\u89c4\u5b9a\uff0c\u89c4\u5b9a\u8981\u6c42 <code>setTimeout<\/code>\u4e2d\u4f4e\u4e8e <code>4ms<\/code>\u7684\u65f6\u95f4\u95f4\u9694\u7b97\u4e3a <code>4ms<\/code>\uff0c<\/li>\n<li>\u7531\u4e8e\u6d4f\u89c8\u5668\u5728\u6267\u884c\u4ee5\u4e0a\u4e09\u6b65\u65f6\uff0c\u5e76\u672a\u8017\u65f6\u5f88\u4e45\uff0c\u6240\u4ee5\u5f53\u5b8f\u4efb\u52a1 <code>setTimeout1<\/code>\u6267\u884c\u5b8c\u65f6\uff0c <code>setTimeout2<\/code>\u7684\u7b49\u5f85\u65f6\u95f4\u5e76\u672a\u7ed3\u675f\uff0c\u6240\u4ee5\u5728 <code>2\u79d2<\/code>\u540e\u6253\u5370\u65e5\u5fd7 <code>3<\/code>\uff0c\u5b9e\u9645\u4e0a\u5e76\u672a\u7b49\u5f852\u79d2\u3002<\/li>\n<\/ul>\n<p>\u4e0b\u9762\u6211\u4eec\u53ef\u4ee5\u518d\u770b\u4e00\u4e2a\u5b9e\u4f8b\uff1a<\/p>\n<pre><code class=\"language-js\" lang=\"js\">setTimeout(function () {\r\n    console.log(1);\r\n    Promise.resolve().then(function () {\r\n        console.log(2);\r\n    });\r\n}, 0);\r\nsetTimeout(function () {\r\n    console.log(3);\r\n}, 0);\r\nPromise.resolve().then(function () {\r\n    console.log(4);\r\n});\r\nconsole.log(5);\r\n<\/code><\/pre>\n<p>\u5f53\u4ee3\u7801\u4e2d\u9047\u5230\u4e86\u5f02\u6b65\u8bf7\u6c42\u7684\u4e8b\u4ef6\uff0c\u53c8\u8be5\u5982\u4f55\u6267\u884c\uff0c\u6839\u636e\u4e0a\u9762\u603b\u7ed3\u7684\u6267\u884c\u673a\u5236\uff0c\u53c8\u8be5\u5f97\u5230\u4ec0\u4e48\u6837\u7684\u7ed3\u679c\uff1f<\/p>\n<p><strong>\u7b2c\u4e00\u8f6e\u5faa\u73af<\/strong><\/p>\n<ul>\n<li>\u540c\u6837\u4ece\u5168\u5c40\u4efb\u52a1\u5165\u53e3\uff0c\u9047\u5230\u5b8f\u4efb\u52a1 <code>setTimeout<\/code>\uff0c\u4ea4\u7ed9\u5f02\u6b65\u5904\u7406\u6a21\u5757\uff0c\u6211\u4eec\u6682\u4e14\u5148\u8bb0\u4e3a <code>setTimeout1<\/code>\uff0c\u7531\u4e8e\u7b49\u5f85\u65f6\u95f4\u4e3a <code>0<\/code>\uff0c\u76f4\u63a5\u52a0\u5165\u5b8f\u4efb\u52a1\u961f\u5217\u3002<\/li>\n<li>\u518d\u6b21\u9047\u5230\u5b8f\u4efb\u52a1 <code>setTimeout<\/code>\uff0c\u4ea4\u7ed9\u5f02\u6b65\u5904\u7406\u6a21\u5757\uff0c\u6211\u4eec\u6682\u4e14\u5148\u8bb0\u4e3a <code>setTimeout2<\/code>\uff0c\u540c\u6837\u76f4\u63a5\u52a0\u5165\u5b8f\u4efb\u52a1\u961f\u5217\u3002<\/li>\n<li>\u9047\u5230\u5fae\u4efb\u52a1 <code>then()<\/code>\uff0c\u52a0\u5165\u5fae\u4efb\u52a1\u961f\u5217\u3002<\/li>\n<li>\u6700\u540e\u9047\u5230\u6253\u5370\u8bed\u53e5\uff0c\u76f4\u63a5\u6253\u5370\u65e5\u5fd7 <code>5<\/code>\u3002<\/li>\n<\/ul>\n<p>\u7b2c\u4e00\u8f6e\u5faa\u73af\u7ed3\u675f\u540e\uff0c\u53ef\u4ee5\u753b\u51fa\u4e0b\u56fe\uff1a<\/p>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212844.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2763\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212844.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212844\" width=\"346\" height=\"256\" \/><\/a><\/p>\n<p><strong>\u7b2c\u4e8c\u8f6e\u5faa\u73af<\/strong><\/p>\n<ul>\n<li>\u6808\u7a7a\u540e\uff0c\u5148\u6267\u884c\u5fae\u4efb\u52a1\u961f\u5217\u4e2d\u7684 <code>then()<\/code>\u65b9\u6cd5\uff0c\u8f93\u51fa <code>4<\/code>\uff0c\u6b64\u65f6\u5fae\u4efb\u52a1\u961f\u5217\u4e3a\u7a7a\u3002<\/li>\n<\/ul>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212857.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2764\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212857.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212857\" width=\"364\" height=\"256\" \/><\/a><\/p>\n<ul>\n<li>\u8bfb\u53d6\u5b8f\u4efb\u52a1\u961f\u5217\u7684\u6700\u9760\u524d\u7684\u4efb\u52a1 <code>setTimeout1<\/code>\u3002<\/li>\n<li>\u5148\u76f4\u63a5\u6267\u884c\u6253\u5370\u8bed\u53e5\uff0c\u6253\u5370\u65e5\u5fd7 <code>1<\/code>\uff0c\u53c8\u9047\u5230\u5fae\u4efb\u52a1 <code>then()<\/code>\uff0c\u52a0\u5165\u5fae\u4efb\u52a1\u961f\u5217\u3002\u7b2c\u4e8c\u8f6e\u5faa\u73af\u7ed3\u675f\u3002<\/li>\n<\/ul>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212910.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2765\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212910.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212910\" width=\"345\" height=\"265\" \/><\/a><\/p>\n<p><strong>\u7b2c\u4e09\u8f6e\u5faa\u73af<\/strong><\/p>\n<ul>\n<li>\u5148\u6267\u884c\u5fae\u4efb\u52a1\u961f\u5217\u4e2d\u7684 <code>then()<\/code>\u65b9\u6cd5\uff0c\u8f93\u51fa <code>2<\/code>\uff0c\u6b64\u65f6\u5fae\u4efb\u52a1\u961f\u5217\u4e3a\u7a7a\u3002<\/li>\n<\/ul>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212923.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2766\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212923.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212923\" width=\"364\" height=\"273\" \/><\/a><\/p>\n<ul>\n<li>\u7ee7\u7eed\u8bfb\u53d6\u5b8f\u4efb\u52a1\u961f\u5217\u7684\u6700\u9760\u524d\u7684\u4efb\u52a1 <code>setTimeout2<\/code>\u3002<\/li>\n<li>\u76f4\u63a5\u6267\u884c\u6253\u5370\u8bed\u53e5\uff0c\u6253\u5370\u65e5\u5fd7 <code>3<\/code>\u3002\u7b2c\u4e09\u8f6e\u5faa\u73af\u7ed3\u675f\uff0c\u6267\u884c\u5b8c\u6bd5\u3002<\/li>\n<\/ul>\n<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212937.png\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2767\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2019\/05\/\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212937.png\" alt=\"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200415212937\" width=\"357\" height=\"261\" \/><\/a><\/p>\n<p>\u6700\u540e\u6211\u4eec\u662f\u6211\u4eec\u7684boss\uff0c\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u533a\u7559\u8a00\u5199\u51fa\u81ea\u5df1\u5fc3\u4e2d\u7684\u90a3\u4e2a\u6b63\u786e\u7b54\u6848\u3002<\/p>\n<pre><code class=\"language-js\" lang=\"js\">console.log('1');\r\nsetTimeout(function () {\r\n    console.log('2');\r\n    new Promise(function (resolve) {\r\n        console.log('3');\r\n        resolve();\r\n    }).then(function () {\r\n        console.log('4')\r\n    })\r\n})\r\nnew Promise(function (resolve) {\r\n    console.log('5');\r\n    resolve();\r\n}).then(function () {\r\n    console.log('6')\r\n})\r\nsetTimeout(function () {\r\n    console.log('7');\r\n})\r\nsetTimeout(function () {\r\n    console.log('8');\r\n    new Promise(function (resolve) {\r\n        console.log('9');\r\n        resolve();\r\n    }).then(function () {\r\n        console.log('10')\r\n    })\r\n})\r\nnew Promise(function (resolve) {\r\n    console.log('11');\r\n    resolve();\r\n}).then(function () {\r\n    console.log('12')\r\n})\r\nconsole.log('13');\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5199\u5728\u524d\u9762 \u6821\u62db\u7b14\u8bd5\u4e2d\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u8fd9\u6837\u4e00\u4e2a\u95ee\u9898\uff1a \/\/\u5199\u51fa\u4e0b\u9762\u4ee3\u7801\u7684\u8fd0\u884c\u7ed3\u679c\uff1a console.log(&#8216;1&#8217; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[105],"tags":[],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2347"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2347"}],"version-history":[{"count":7,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2347\/revisions"}],"predecessor-version":[{"id":2769,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2347\/revisions\/2769"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}