Javascript 问题 - V2EX
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colezhang
V2EX    前端开发

Javascript 问题

  •  
  •   colezhang 2016-05-03 14:55:56 +08:00 3142 次点击
    这是一个创建于 3447 天前的主题,其中的信息可能已经有所发展或是发生改变。

    function testPlainPush(): ThunkAction { return () => Parse.Cloud.run('test_push'); }

    请问这个冒号啥意思

    8 条回复    2016-05-03 17:26:00 +08:00
    kindjeff
        1
    kindjeff  
       2016-05-03 15:28:02 +08:00
    console 里试了一下是报错的
    colezhang
        2
    colezhang  
    OP
       2016-05-03 15:36:38 +08:00
    @kindjeff ES6 写法应该 用 babel 可以转 当不明白那么写啥意思
    whahuzhihao
        3
    whahuzhihao  
       2016-05-03 15:45:11 +08:00
    这是 typescript 吗? 声明 testPlayPush 是 ThunkAction 类型的
    无责任瞎猜的
    kindjeff
        4
    kindjeff  
       2016-05-03 15:46:40 +08:00
    @colezhang 大概是返回值类型吧。不然还能是继承吗~~
    bzw875
        5
    bzw875  
       2016-05-03 16:20:10 +08:00
    node v5.11.0 执行也报错,不知道是啥
    learnshare
        6
    learnshare  
       2016-05-03 16:21:57 +08:00
    看起来是 TypeScript ,***(): ThunkAction 是声明返回值类型吧
    manfay
        7
    manfay  
       2016-05-03 16:51:30 +08:00 via iPad   1
    Flow | A static type checker for Javascript
    http://flowtype.org
    colezhang
        8
    colezhang  
    OP
       2016-05-03 17:26:00 +08:00
    @manfay thinks
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