{"id":305306,"date":"2021-01-14T23:09:28","date_gmt":"2021-01-14T15:09:28","guid":{"rendered":"http:\/\/4563.org\/?p=305306"},"modified":"2021-01-14T23:09:28","modified_gmt":"2021-01-14T15:09:28","slug":"ecma-%e6%a0%87%e5%87%86%e7%9a%84-promise-%e5%af%b9%e8%b1%a1%e5%92%8c-promises-a-%e6%a0%87%e5%87%86%e7%9a%84%e6%9c%89%e4%bb%80%e4%b9%88%e4%b8%8d%e5%90%8c%e4%b9%8b%e5%a4%84%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=305306","title":{"rendered":"ECMA \u6807\u51c6\u7684 Promise \u5bf9\u8c61\u548c Promises\/A+ \u6807\u51c6\u7684\u6709\u4ec0\u4e48\u4e0d\u540c\u4e4b\u5904\uff1f"},"content":{"rendered":"
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ECMA \u6807\u51c6\u7684 Promise \u5bf9\u8c61\u548c Promises\/A+ \u6807\u51c6\u7684\u6709\u4ec0\u4e48\u4e0d\u540c\u4e4b\u5904\uff1f <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : JayLin1011 <\/span> <\/i> 2<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u4f17\u6240\u5468\u77e5\uff0cPromise<\/code> \u662f\u4e00\u4e2a\u793e\u533a\u5148\u9a71\u7684 Built-in<\/code> \u5bf9\u8c61\uff0cPromises\/A+<\/code> \u6807\u51c6\u4e5f\u662f ES6 Promsie<\/code> \u7684\u524d\u8eab\uff0c\u89c4\u8303\u4e86 Promise<\/code> \u4e0d\u540c\u5b9e\u73b0\u7684 thenable<\/code> \u53ef\u4ea4\u4e92\u6027\uff0c\u4e3b\u8981\u662f\u96c6\u4e2d\u5728 Promise<\/code> \u7684\u6784\u9020\u51fd\u6570\u672c\u8eab\u548c\u539f\u578b\u6210\u5458 then<\/code> \u65b9\u6cd5\u7684\u5b9e\u73b0\uff0cES6 Promise<\/code> \u5219\u5728 Promises\/A+<\/code> \u6807\u51c6\u57fa\u7840\u4e0a\u6dfb\u52a0\u4e86\u66f4\u591a\u7684\u9759\u6001\u6210\u5458\u548c\u539f\u578b\u6210\u5458\u3002<\/p>\n

\u6211\u5728\u81ea\u5b9a\u4e49\u5b9e\u73b0\u4e00\u4e2a ES6 Promise<\/code> \u7684\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u4e86\u4e00\u4e9b\u95ee\u9898\uff0c\u5373\u4f7f\u6211\u7684 Promise<\/code> \u7b26\u5408 Promises\/A+<\/code> \u6807\u51c6\uff08\u53ef\u4ee5\u901a\u8fc7 promises-aplus-tests<\/code> \u7684\u6d4b\u8bd5\uff09\uff0c\u4f46\u662f\u548c ES6 Promise<\/code> \u7684\u884c\u4e3a\u4ecd\u6709\u4e00\u5b9a\u5dee\u5f02\uff0c\u5373\u4f7f\u7942\u80fd\u591f\u548c\u539f\u751f Promise<\/code> \u4ea4\u4e92\u3002<\/p>\n

\u76ee\u524d\u7684\u53d1\u73b0\u7684\u884c\u4e3a\u6216\u8005\u8bf4\u529f\u80fd\u5dee\u5f02\u6709\u4ee5\u4e0b\u4e24\u4e2a\uff1a<\/p>\n

    \n
  1. new Promise<\/code> \u65f6\u82e5 resolve<\/code> \u4e00\u4e2a Promise<\/code>\uff08\u6216\u8005 thenable<\/code>\uff09\u5bf9\u8c61\uff0cES6 Promise<\/code> \u4f1a\u8fdb\u884c\u6df1\u5c42\u7684 resolve<\/code>\uff0cPromises\/A+<\/code> \u6807\u51c6\u5219\u5ffd\u7565\u4e86\u8fd9\u4e00\u70b9\uff0c\u53d7\u5f71\u54cd\u7684 API \u4e3b\u8981\u662f Promise<\/code> \u7684\u6784\u9020\u51fd\u6570\u548c Promise.resolve()<\/code> \u65b9\u6cd5\uff1b<\/li>\n
  2. new Promise<\/code> \u65f6\u82e5 resolve<\/code> \u4e86\u6211\u81ea\u5df1\uff08\u5373\u6211\u7b49\u6211\u81ea\u5df1\u5b8c\u6210\u6211\u81ea\u5df1\uff09\uff0cES6 Promise<\/code> \u4f1a reject<\/code> \u4e00\u4e2a\u5faa\u73af\u94fe\u5f0f\u8c03\u7528\u7684\u5f02\u5e38\uff0cPromises\/A+<\/code> \u6807\u51c6\u5219\u5ffd\u7565\u4e86\u8fd9\u4e00\u70b9\uff0c\u53d7\u5f71\u54cd\u7684 API \u4e3b\u8981\u662f Promise<\/code> \u7684\u6784\u9020\u51fd\u6570\u548c Promise.deferred()<\/code> \u65b9\u6cd5\uff1b<\/li>\n<\/ol>\n

    \u5168\u77e5\u4e07\u80fd\u7684 v2ex<\/code> \u554a\uff0c \u6211\u7684\u95ee\u9898\uff1a\u662f\u5426\u6709\u5173\u4e8e ES<\/code> \u6807\u51c6\u7684 Promise<\/code> \u5bf9\u8c61\u548c Promises\/A+<\/code> \u6807\u51c6\u8be6\u7ec6\u6bd4\u8f83\u7684\u5b8c\u6574\u5185\u5bb9\u6216\u8005\u5b66\u4e60\u8d44\u6e90\uff0c\u91cd\u70b9\u662f\u4e24\u8005\u7684\u5176\u4ed6\u65b9\u9762\u7684\u5f02\u540c\u6bd4\u8f83\uff0c\u8bc4\u8bba\u533a\u5927\u795e\u4e5f\u53ef\u4ee5\u8865\u5145\u5206\u4eab\u5176\u4ed6\u7684\u5f02\u540c\uff0c\u6c42\u6c42\u4e86\uff0c\u8fd9\u5bf9\u6211\u771f\u7684\u5f88\u91cd\u8981\u3002<\/p>\n

    PS\uff1a\u5c3d\u91cf\u4e0d\u8981\u8d34 bluebird<\/code> \u6216 core-js<\/code> \u7684 Promise<\/code> \u6e90\u7801 mock<\/code>\uff0c\u56e0\u4e3a\u6211\u53ea\u60f3\u77e5\u9053\u5177\u4f53\u5dee\u5f02\uff0c\u7136\u540e\u5c1d\u8bd5\u5b9e\u73b0\uff0c\u4e0a\u9762\u5217\u4e3e\u7684\u5dee\u5f02\u662f\u88ab\u6211\u53d1\u73b0\u540e\u6210\u529f\u4fee\u590d\u7684\u90e8\u5206\u3002<\/p>\n<\/p><\/div>\n

    \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (6<\/span>) <\/div>\n
    <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
      \n
    • \n
      \n
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      \u8cc7\u6df1\u5927\u4f6c : autoxbc <\/span> <\/div>\n
      <\/i> <\/span> <\/div>\n<\/p><\/div>\n
      ECMA \u7684\u89c4\u8303\u51e0\u4e4e\u5c31\u662f\u4f2a\u4ee3\u7801\uff0c\u6240\u6709\u7ed5\u8fc7\u8fd9\u4e2a\u8bd5\u56fe\u53d6\u5de7\u7684\u505a\u6cd5\u90fd\u662f\u6d6a\u8d39\u65f6\u95f4\u3002\u4e3a\u4e86\u4f50\u8bc1\u4e0a\u8ff0\u770b\u6cd5\uff0c\u6211\u53bb\u770b\u4e86\u4e00\u773c core-js \u7684\u6e90\u7801\uff0c\u5b8c\u5168\u5c31\u662f\u5bf9\u89c4\u8303\u7684\u7ffb\u8bd1\uff0c\u751a\u81f3\u53d8\u91cf\u540d\u90fd\u662f\u4f2a\u4ee3\u7801\u91cc\u7167\u642c\u7684<\/p>\n

      https:\/\/tc39.es\/ecma262\/#sec-promise-objects <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

    • \n
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      \u8cc7\u6df1\u5927\u4f6c : xiaody <\/span> <\/div>\n
      <\/i> <\/span> <\/div>\n<\/p><\/div>\n
      \u6211\u5370\u8c61\u91cc Promises\/A+ \u53ea\u5b9a\u4e49\u4e86 then \u7684\u884c\u4e3a\uff0c\u5e76\u4e0d\u6d89\u53ca Promise \u6784\u9020\u51fd\u6570\u672c\u8eab\u548c\u4efb\u4f55 Promise.resolve \u4e4b\u7c7b\u7684\u9759\u6001\u65b9\u6cd5\uff0c\u6240\u4ee5\u4f60\u8bf4\u7684\u4e24\u4e2a\u300c\u5dee\u5f02\u300d\u90fd\u662f Promises\/A+ \u4e4b\u5916\u7684\u4e1c\u897f\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
    • \n
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      \u8cc7\u6df1\u5927\u4f6c : libook <\/span> <\/div>\n
      <\/i> <\/span> <\/div>\n<\/p><\/div>\n
      https:\/\/promisesaplus.com\/implementations
      \u8bf4 ES \u7684 Promise \u5c31\u662f A+\u7684\u4e00\u79cd\u5b9e\u73b0\u3002<\/p>\n

      \u5b9e\u9645\u4e0a\u5e94\u8be5\u8bf4 ES \u7684 Promise \u517c\u5bb9 A+\uff0c\u4f60\u53ef\u4ee5\u7528 A+\u7684\u7528\u6cd5\u6765\u4f7f\u7528 ES Promise\uff0c\u4e0d\u8fc7 ES \u63d0\u4f9b\u4e86\u66f4\u591a\u7279\u6027\uff0c\u6bd4\u5982 catch \u3001finally \u3001any \u3001allSettled \u3002
      \u53ef\u4ee5\u53bb\u770b\u770b A+\u7684\u89c4\u8303\u5168\u6587\uff0c\u5f88\u77ed\uff0c\u5176\u5b9e\u90fd\u662f\u4e9b\u5f88\u6838\u5fc3\u7684\u529f\u80fd\uff0c\u5404\u79cd\u5e93\u7684\u5b9e\u73b0\u65b9\u6848\u90fd\u5728 A+\u57fa\u7840\u4e0a\u8fdb\u884c\u4e86\u529f\u80fd\u7684\u6269\u5c55\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n

    • \n
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      \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : JayLin1011 <\/span> <\/div>\n
      <\/i> <\/span> <\/div>\n<\/p><\/div>\n
      @autoxbc core-js \u592a\u4f9d\u8d56 host \u4e86\uff08\u6d89\u53ca doceument \u548c process \u7b49\uff09\uff0c\u786e\u5b9e\u5b9e\u73b0\u4e86 ES Promise\uff0c\u4f46\u4e0d\u662f\u5bf9\u89c4\u8303\u7684\u5b8c\u5168\u7ffb\u8bd1\uff08\u6bd4\u5982\u8003\u8651\u4e0d\u540c host \u7684\u517c\u5bb9\u6027\uff09\uff0c\u6211\u66f4\u503e\u5411\u4e8e bluebird \u6216 q \u7b49\u57fa\u4e8e UTDD \u7684\u5b9e\u73b0\u3002Promises\/A+ \u5728\u6211\u770b\u6765\u65f6 ES Promise \u7684\u5b50\u96c6\uff0c\u4f46\u6211\u76ee\u524d\u80fd\u83b7\u53d6\u7684\u6d4b\u8bd5\u5305\u4ec5\u80fd\u63d0\u4f9b\u57fa\u4e8e Promises\/A+ \u7684\u6d4b\u8bd5\uff0c\u6240\u4ee5\u624d\u60f3\u8981\u4e86\u89e3\u4e24\u8005\u7684\u5dee\u5f02\uff0c\u5b8c\u5584\u7ed9\u4e88 ES Promise \u6d4b\u8bd5\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
    • \n
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      \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : JayLin1011 <\/span> <\/div>\n
      <\/i> <\/span> <\/div>\n<\/p><\/div>\n
      @libook \u611f\u8c22\u56de\u590d\uff0c\u6211\u540c\u610f\u4f60\u7684\u89c2\u70b9\uff0cA\/+ \u53ef\u4ee5\u89c6\u4e3a ES Promise \u7684\u5b50\u96c6\uff0c\u76ee\u524d\u82e6\u607c\u7684\u662f\u83ab\u5f97\u5bf9\u9488\u5bf9 ES Promise \u7684\u5b8c\u5907\u6027\u6d4b\u8bd5\uff0c\u4ee5\u533a\u5206\u4e24\u8005\u7684\u5dee\u5f02\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
    • \n
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      \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : JayLin1011 <\/span> <\/div>\n
      <\/i> <\/span> <\/div>\n<\/p><\/div>\n
      @xiaody A\/+ \u544a\u8bc9\u6211\u4eec\u4e00\u4e2a Promise \u6709\u4e14\u4ec5\u6709\u4e09\u79cd\u72b6\u6001\uff0c\u8fd9\u5c31\u662f\u6784\u9020\u51fd\u6570\u7684\u5185\u5bb9\u3002\u3002\u5176\u6b21\uff0cPromise \u6240\u6709\u7684\u9759\u6001\u65b9\u6cd5\u90fd\u4f9d\u8d56\u4e8e\u6784\u9020\u51fd\u6570\u7684\u5b9e\u73b0\uff08\u4e00\u4e2a\u7279\u6b8a\u7684\u8bed\u6cd5\u7cd6\uff09\uff0c\u56e0\u4e3a\u6240\u6709\u7684\u9759\u6001\u65b9\u6cd5\u90fd\u6784\u9020\u5e76\u8fd4\u56de\u4e00\u4e2a Promise\uff0c\u6362\u800c\u8a00\u4e4b\uff0c\u6784\u9020\u51fd\u6570\u672c\u8eab\u5c31\u4f1a\u5f71\u54cd\u6240\u6709\u9759\u6001\u65b9\u6cd5\u7684\u5b9e\u73b0\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
    • \n","protected":false},"excerpt":{"rendered":"

      ECMA \u6807\u51c6\u7684 Promise …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/305306"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=305306"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/305306\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=305306"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=305306"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=305306"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}