{"id":124782,"date":"2020-06-15T13:36:51","date_gmt":"2020-06-15T05:36:51","guid":{"rendered":"http:\/\/4563.org\/?p=124782"},"modified":"2020-06-15T13:36:51","modified_gmt":"2020-06-15T05:36:51","slug":"promise%ef%bc%88axios%ef%bc%89%e7%9a%84%e9%97%ae%e9%a2%98%e8%af%b7%e6%95%99","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=124782","title":{"rendered":"Promise\uff08axios\uff09\u7684\u95ee\u9898\u8bf7\u6559"},"content":{"rendered":"
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Promise\uff08axios\uff09\u7684\u95ee\u9898\u8bf7\u6559 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : miv <\/span> <\/i> 8<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u5982\u9898\uff0c\u9047\u5230\u4e00\u4e2a\u68d8\u624b\u7684\u95ee\u9898\uff0c\u57fa\u7840\u4e0d\u624e\u5b9e\u7684\u6211\u6765\u8bf7\u6559\u4e00\u4e0b\u3002<\/p>\n

\u662f\u8fd9\u6837\u7684\u9700\u8981\u5b9e\u73b0\u4e00\u4e2a\u529f\u80fd\u4f2a\u4ee3\u7801\u5982\u4e0b<\/p>\n

if(\u60c5\u51b5 A \uff09{  axios \u8bf7\u6c42\u63a5\u53e3 A.then(res=>){      if(xxx){          return \/\/\u8fd9\u91cc\u7684 return \u65e0\u6cd5\u7ed3\u675f\u4e0b\u9762\u60c5\u51b5 B \u548c\u60c5\u51b5 C\uff0c\u8fd8\u662f\u4f1a\u7ee7\u7eed\u6267\u884c\uff0c\u56e0\u4e3a\u8fd9\u91cc\u662f\u5f02\u6b65         }     } }  if(\u60c5\u51b5 B \uff09{  ... }else if(\u60c5\u51b5 C \uff09{  ... } <\/code><\/pre>\n
\u73b0\u5728\u7684\u95ee\u9898\u662f\uff0caxios \u8bf7\u6c42\u63a5\u53e3 A \u7684\u6570\u636e\u53ea\u53ef\u4ee5\u4f7f\u7528 then \u5f02\u6b65\u83b7\u53d6\u7ed3\u679c\u3002 \u5982\u679c\u6761\u4ef6\u4e0d\u6ee1\u8db3\u5c31\u4e0d\u6267\u884c\u540e\u9762\u5176\u4ed6\u60c5\u51b5\uff08\u60c5\u51b5 B \u548c\u60c5\u51b5 C \uff09\u7684\u4ee3\u7801\u4e86\u3002 \u53ef\u662f\u7531\u4e8e\u60c5\u51b5 A \u662f\u5f02\u6b65\u7684\uff0c\u6240\u4ee5\u4e0d\u7ba1\u600e\u4e48\u6837\u60c5\u51b5 B \u548c C \u90fd\u4f1a\u6267\u884c\uff0c\u6211\u4e0d\u9700\u8981\u8fd9\u4e00\u79cd\u60c5\u51b5\uff0c\u9700\u8981\u600e\u4e48\u5904\u7406\u5462\uff1f<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (10<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : BearD01001 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0d\u7528 async \u7684\u60c5\u51b5\u4e0b\u53ef\u4ee5\u5728 then \u4e2d throw \u4e00\u4e2a error \u7136\u540e\u7528 catch \u5b9e\u73b0                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : FEDT <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u628a \u60c5\u51b5 B \u548c\u60c5\u51b5 C \u653e\u5230 then \u7684\u56de\u8c03\u51fd\u6570\u91cc\u4e0d\u5c31\u53ef\u4ee5\u4e86\u4e48…                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : miv <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @BearD01001 \u597d\u7684\uff0c\u592a\u611f\u8c22\u4e86\uff0c\u6211\u5c1d\u8bd5\u4e0b\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : miv <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @FEDT \u662f\u8fd9\u6837\u7684\uff0c\u6539\u52a8\u6210\u672c\u6709\u70b9\u5927\uff0c\u56e0\u4e3a\u6ee1\u8db3\u60c5\u51b5 A \u624d\u6267\u884c\u5bf9\u5e94\u7684\u4ee3\u7801\u3002\u8fd9\u6837\u7684\u8bdd\u5c31\u4f1a\u591a\u4e00\u4efd\u4ee3\u7801\u5728\u56de\u8c03\u51fd\u6570\u91cc\u9762\u4e86\uff0c\u6709\u70b9\u5197\u4f59                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : otakustay <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5982\u679c if \u91cc\u7684\u6761\u4ef6\u662f A \u63a5\u53e3\u8fd4\u56de\u624d\u77e5\u9053\u7684\uff0c\u90a3\u4e48\u9664\u4e86\u628a B \u548c C \u653e\u8fdb A \u7684 then \u91cc\u4ee5\u5916\u6ca1\u6709\u4efb\u4f55\u529e\u6cd5
    \u4ee3\u7801\u6539\u9020\u6210 await \u7684\u8bdd\u6539\u8d77\u6765\u6ca1\u4ec0\u4e48\u6210\u672c\uff0c\u53cd\u6b63\u5916\u90e8\u8c03\u7528\u80af\u5b9a\u662f\u8ba4\u5b9a\u8fd4\u56de\u503c\u662f Promise \u5427                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : Exin <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 1. \u63a8\u8350 async\/await<\/p>\n
    “`js
    if (A) {
     const res = await requestA(…)
     if (xxx) return
    }<\/p>\n
    if (B) …
    else if (C) …
    “`<\/p>\n
    2. Promise.resolve<\/p>\n
    “`js
    Promise.resolve(A ? requestA(…).then(res => xxx ? true : false) : false)
     .then(escapedFromA => {
     if (!escapedFromA) {
     if (B) …
     else if (C) …
     }
     })
    “`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Exin <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 v2 \u56de\u590d\u662f\u4e0d\u662f\u4e0d\u652f\u6301 markdown \uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : miv <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @otakustay \u591a\u8c22\u8001\u54e5<\/p>\n
    @Exin \u591a\u8c22\u8001\u54e5
    \u6211\u5c1d\u8bd5\u4e0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : godgc <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Exin v2 \u5e94\u8be5\u662f\u8981“`javascript \u5427<\/p>\n
    e.g<\/p>\n
    “`javascript
     let foo = ‘bar’;
    “`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : godgc <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Exin \u60e8..\u4e5f\u4e0d\u884c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    Promise\uff08axios\uff09\u7684\u95ee\u9898…<\/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\/124782"}],"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=124782"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/124782\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=124782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=124782"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=124782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}