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NodeJS Avoid callback hell

Async module


The source is available for download from GitHub. Alternatively, you can install using npm:

$ npm install --save async

As well as using Bower:

$ bower install async

Example:


var async = require("async");
async.parallel([
 function(callback) { ... },
 function(callback) { ... }
], function(err, results) {
 // optional callback
});


Conclusion

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