Загрузчик асинхронных сценариев с обратным вызовом - CSS-хитрости

Anonim 
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); ) )

использование

var l = new Loader(); l.require(( "example-script-1.js", "example-script-2.js"), function() ( // Callback console.log('All Scripts Loaded'); ));