Javascript 一行简易实现 `sleep(1)` - V2EX
V2EX = way to explore
V2EX 是一个关于分享和探索的地方
现在注册
已注册用户请  登录
推荐关注
Meteor
JSLint - a Javascript code quality tool
jsFiddle
D3.js
WebStorm
推荐书目
Javascript 权威指南第 5 版
Closure: The Definitive Guide
shuding
V2EX    Javascript

Javascript 一行简易实现 `sleep(1)`

  •  1
     
  •   shuding 2016-06-09 20:38:40 +08:00 4046 次点击
    这是一个创建于 3478 天前的主题,其中的信息可能已经有所发展或是发生改变。

    其实就是常规的 generator 用法,也是 co , koa 的基本原理。
    ……我折腾了一个 57 字符的 简易 实现。

    在 Console 里运行一发试试吧!

    var d=(f,t=f(),r=t.next())=>r.done||setTimeout(d,r.value,f,t); // <- source code d(function *() { // <- wrapper // <- magic console.log('foo'); // output 'foo' yield 1000; // delay 1 sec console.log('bar'); // output 'bar' yield 1000; // delay 1 sec console.log('baz'); // output 'baz' }); 

    详细: https://github.com/quietshu/delay

    11 条回复    2016-06-10 11:31:21 +08:00
    breeswish
        1
    breeswish  
       2016-06-09 20:45:25 +08:00   2
    都上 generator 了,何不 async/await 走起 :-)

    const sleep = (delay) => new Promise(resolve => setTimeout(resolve, delay));

    console.log('foo');
    await sleep(1000);
    console.log('bar');
    await sleep(1000);
    console.log('baz');
    chairuosen
        2
    chairuosen  
       2016-06-09 20:54:12 +08:00   5
    function sleep(delay){
    alert( delay + '秒钟之后点一下确定' );
    }
    kzaemrio
        3
    kzaemrio  
       2016-06-09 20:57:05 +08:00
    @chairuosen 棒棒棒
    wujunze
        4
    wujunze  
       2016-06-09 21:01:42 +08:00
    这是什么飞机? 意义何在?
    lhbc
        5
    lhbc  
       2016-06-09 21:06:01 +08:00 via Android
    @wujunze 为后续性能优化打下坚实基础
    wujunze
        6
    wujunze  
       2016-06-09 21:13:23 +08:00
    @lhbc 很久木有写 JS 了 JS 快忘光了
    zhuangzhuang1988
        7
    zhuangzhuang1988  
       2016-06-09 21:17:03 +08:00   1
    @breeswish 都 async/await 为何不 async computation expressions 走起 :-)

    async {
    println "foo"
    do! Async.Sleep 10000
    println "bar"
    do! Async.Sleep 10000
    .....
    }

    需要使用 http://fsprojects.github.io/Fable/
    zmj1316
        8
    zmj1316  
       2016-06-09 22:29:10 +08:00   2
    js 的 异步 有几种写法?
    shuding
        9
    shuding  
    OP
       2016-06-09 22:31:49 +08:00
    @breeswish 还是 async/await 好看!坐等 native support …
    @zhuangzhuang1988 wow 感谢!没接触过 F#,在看官网 sample 中,赞!!
    jasonliao
        10
    jasonliao  
       2016-06-09 22:32:51 +08:00
    @chairuosen 今日最佳
    bramblex
        11
    bramblex  
       2016-06-10 11:31:21 +08:00
    我自己造了一个编译到 Javascript 的语言 Smooth , https://github.com/bramblex/Smooth

    这种问题在 Smooth 里面实现简直不能太简单了
    关于     帮助文档     自助推广系统     博客     API     FAQ     Solana     909 人在线   最高记录 6679       Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 30ms UTC 21:05 PVG 05:05 LAX 13:05 JFK 16:05
    Do have faith in what you're doing.
    ubao msn snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86