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cdax/async_callback.js

Last active August 29, 2015 14:10
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A callback-style asynchronous function in Node
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async_callback.js
var http = require('http');
var download = function(url, callback) {
var page = '';
http.get(url, function(res) {
res.on('data', function(chunk) {
page += chunk.toString();
});
res.on('end', function() {
//Successful callback
callback(null, page);
});
res.on('error', function(err) {
//Error callback
callback(err, null);
});
});
};
//Calling download
downlaod('http://nodejs.org', function(err, page) {
if(err)
console.log(err);
else
console.log('Downloaded.');
});
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