node.js 异步库 [英] node.js async libs

问题描述

有大量的库可以帮助修复回调综合症层.

There are a ton of libraries that help with fixing the layers of callback syndrome.

其实太多了，我用哪个?

In fact, there's too many, which one do i use?

推荐答案

我使用 Async.js.

Async 是一个实用模块，它提供直接、强大的用于工作的函数异步 JavaScript.虽然最初设计用于node.js，也可以直接使用在浏览器中.

Async is a utility module which provides straight-forward, powerful functions for working with asynchronous JavaScript. Although originally designed for use with node.js, it can also be used directly in the browser.

示例

async.map(['file1','file2','file3'], fs.stat, function(err, results){
    // results is now an array of stats for each file
});

async.filter(['file1','file2','file3'], path.exists, function(results){
    // results now equals an array of the existing files
});

async.parallel([
    function(){ ... },
    function(){ ... }
], callback);

async.series([
    function(){ ... },
    function(){ ... }
]);

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