{"id":13016,"date":"2023-11-29T10:15:58","date_gmt":"2023-11-29T02:15:58","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=13016"},"modified":"2023-11-29T10:16:03","modified_gmt":"2023-11-29T02:16:03","slug":"qian-duan-mian-shi-ti-shuo-shuo-ni-duipromise-de-l","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/29\/qian-duan-mian-shi-ti-shuo-shuo-ni-duipromise-de-l\/","title":{"rendered":"\u524d\u7aef\u9762\u8bd5\u9898\uff1a\u8bf4\u8bf4\u4f60\u5bf9promise\u7684\u4e86\u89e3\uff1f"},"content":{"rendered":"<p>\u4f9d\u7167Promise\/A+\u7684\u5b9a\u4e49\uff0cPromise\u6709\u56db\u79cd\u72b6\u6001\uff1a<br \/>\n1\u3001\tpending\uff1a\u521d\u59cb\u72b6\u6001\uff0c\u975e fulfilled \u6216 rejected.<br \/>\n2\u3001\tfulfilled:\u6210\u529f\u7684\u64cd\u4f5c.<br \/>\n3\u3001\trejected\uff1a\u5931\u8d25\u7684\u64cd\u4f5c.<br \/>\n4\u3001\tsettled\uff1a Promise \u5df2\u88ab fulfilled \u6216 rejected,\u4e14\u4e0d\u662f pending<br \/>\n\u53e6\u5916\uff0cfulfilled \u4e0e rejected \u4e00\u8d77\u5408\u79f0 settled<br \/>\nPromise\u5bf9\u8c61\u7528\u6765\u8fdb\u884c\u5ef6\u8fdf(deferred)\u548c\u5f02\u6b65(asynchronous)\u8ba1\u7b97<br \/>\nPromise\u7684\u6784\u9020\u51fd\u6570<br \/>\n\u6784\u9020\u4e00\u4e2aPromise,\u6700\u57fa\u672c\u7684\u7528\u6cd5\u5982\u4e0b\uff1a<br \/>\nvar promise = new Promise(function(resolve, reject) {<br \/>\nif (&#8230;) { \/\/ succeed<br \/>\nresolve(result)\uff1b<br \/>\n} else {\t\/\/ fails<br \/>\nreject(Error(errMessage))\uff1b<br \/>\n}<br \/>\n});<br \/>\nPromise\u5b9e\u4f8b\u62e5\u6709then\u65b9\u6cd5(\u5177\u6709then\u65b9\u6cd5\u7684\u5bf9\u8c61\uff0c\u901a\u5e38\u88ab\u79f0\u4e3athenable)\u3002\u5b83\u7684\u4f7f\u7528 \u65b9\u6cd5\u5982\u4e0b\uff1a<br \/>\npromise. then(onFulfilied, onRejected)<br \/>\n\u63a5\u6536\u4e24\u4e2a\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\uff0c\u4e00\u4e2a\u5728fulfilled\u7684\u65f6\u5019\u88ab\u8c03\u7528\uff0c\u4e00\u4e2a\u5728rejected\u7684\u65f6\u5019\u88ab\u8c03\u7528,<br \/>\n\u63a5\u6536\u53c2\u6570\u5c31\u662f future, onFulfilled \u5bf9\u5e94 resolve, onRejected \u5bf9\u5e94 reject<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f9d\u7167Promise\/A+\u7684\u5b9a\u4e49\uff0cPromise\u6709\u56db\u79cd\u72b6\u6001\uff1a 1\u3001 pending\uff1a\u521d\u59cb\u72b6\u6001\uff0c\u975e fulfill [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-13016","post","type-post","status-publish","format-standard","hentry","category-qianduan"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/13016","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\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=13016"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/13016\/revisions"}],"predecessor-version":[{"id":13017,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/13016\/revisions\/13017"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=13016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=13016"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=13016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}