{"id":138,"date":"2019-06-11T03:17:22","date_gmt":"2019-06-11T03:17:22","guid":{"rendered":"https:\/\/www.369usa.com\/blog\/?p=138"},"modified":"2019-06-11T03:17:22","modified_gmt":"2019-06-11T03:17:22","slug":"%e7%ae%80%e5%8d%95%e7%9a%84-async-await%e4%be%8b%e5%ad%90","status":"publish","type":"post","link":"https:\/\/www.369usa.com\/blog\/%e7%ae%80%e5%8d%95%e7%9a%84-async-await%e4%be%8b%e5%ad%90\/","title":{"rendered":"\u7b80\u5355\u7684 async , await\u4f8b\u5b50"},"content":{"rendered":"<pre>\r\n\r\nvar count = 0;\r\nvar tick = () => {\r\n\tcount++;\r\n\tsetTimeout(() => {\r\n\t\tprocess.stdout.write('.');\r\n\t\tif(count < 100) tick();\r\n\t},100);\r\n}\r\ntick();\/\/Init\r\n\r\n\r\nvar getApple = (n) => {\r\n\treturn new Promise((resolved,rejected) => {\r\n\t\tsetTimeout(() => {\r\n\t\t\tresolved(`Apple x ${n}`);\r\n\t\t},2000)\r\n\t})\r\n}\r\n\t\r\n\r\nvar doStuff = async () => {\r\n\t\r\n\tconsole.log('Going to get an apple ... ');\r\n\tvar apples = await getApple(2);\r\n\tconsole.log('Got myself ' + apples);\r\n\t\r\n\t\/\/Always return a promise?\r\n\t\r\n}\r\n\r\ndoStuff();\r\n\r\nconsole.log('This should be executed second.');\r\n\r\n<\/pre>\n<p>Output:<\/p>\n<pre>\r\n\r\nnode index.js\r\nGoing to get an apple ...\r\nThis should be executed second.\r\n...................Got myself Apple x 2\r\n.................................................................................\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>var count = 0; var tick = () => { count++; setTimeout(() => { process.stdout.write(&#8216;.&#8217;); if(count < 100) tick(); },100); } tick();\/\/Init var getApple = (n) => { return new Promise((resolved,rejected) => { setTimeout(() => { resolved(`Apple x ${n}`); },2000) }) } var doStuff = async () => { console.log(&#8216;Going to get an apple &#8230; &hellip; <a href=\"https:\/\/www.369usa.com\/blog\/%e7%ae%80%e5%8d%95%e7%9a%84-async-await%e4%be%8b%e5%ad%90\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;\u7b80\u5355\u7684 async , await\u4f8b\u5b50&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-138","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u7b80\u5355\u7684 async , await\u4f8b\u5b50 - \u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\u535a\u5ba2<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.369usa.com\/blog\/\u7b80\u5355\u7684-async-await\u4f8b\u5b50\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u7b80\u5355\u7684 async , await\u4f8b\u5b50 - \u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\u535a\u5ba2\" \/>\n<meta property=\"og:description\" content=\"var count = 0; 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