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var Loader = function () { } | |
Loader.prototype = { | |
require: function (scripts, callback) { | |
this.loadCount = 0; | |
this.totalRequired = scripts.length; | |
this.callback = callback; | |
for (var i = 0; i < scripts.length; i++) { | |
this.writeScript(scripts[i]); | |
} | |
}, | |
loaded: function (evt) { | |
this.loadCount++; | |
if (this.loadCount == this.totalRequired && typeof this.callback == 'function') this.callback.call(); | |
}, | |
writeScript: function (src) { | |
var self = this; | |
var s = document.createElement('script'); | |
s.type = "text/javascript"; | |
s.async = true; | |
s.src = src; | |
s.addEventListener('load', function (e) { self.loaded(e); }, false); | |
var head = document.getElementsByTagName('head')[0]; | |
head.appendChild(s); | |
} | |
} | |
// Usage | |
var l = new Loader(); | |
l.require([ | |
"example-script-1.js", | |
"example-script-2.js"], | |
function() { | |
// Callback | |
console.log('All Scripts Loaded'); | |
}); |
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