Utils

Utils.js

(function(window) {

    var Utils = window.Utils || function() { /* no need to set initial params as of yet */ };

    Utils.prototype = {
        ajaxGet: function(url, cb, passVar) {
            var request = new XMLHttpRequest();
            request.open('GET', url, true);
            request.onreadystatechange = function() {
                if (this.readyState === 4) {
                    if (this.status >= 200 && this.status < 400)
                        cb(request.responseText, passVar);
                    else
                        console.log("Something went wrong with the XMLHttpRequest!\nERROR: " + this.status);
                }
            };
            request.send();
        },
        addListener: function(obj, type, fn) {
            if (obj.attachEvent) {
                obj['e' + type + fn] = fn;
                obj[type + fn] = function() {
                    obj['e' + type + fn](window.event);
                }
                obj.attachEvent('on' + type, obj[type + fn]);
            } else
                obj.addEventListener(type, fn, false);
        },
        containsAll: function(haystack, needles) {
            var i = needles.length;
            while (i--) {
                if (haystack.indexOf(needles[i]) === -1)
                    return false;
            }
            return true;
        },
        copyObj: function(original, copy) {
            var copy = copy || {};
            if (original === null || typeof original !== "object")
                return original;
            for (var prop in original) {
                if (original.hasOwnProperty(prop)) {
                    copy[prop] = (copy[prop] && typeof copy[prop] === "object") ? this.copyObj(original[prop], copy[prop])
                    	: (copy[prop] === 0 || copy[prop]) ? copy[prop]
                    	: original[prop];
                }
            }
            return copy;
        },
        getChildren: function(el) {
            var children = [],
                i = el.children.length;
            while (i--) {
                if (el.children[i].nodeType != 8)
                    children.unshift(el.children[i]);
            }
            return children;
        },
        ready: function(fn) {
            if (document.readyState != 'loading')
                fn();
            else if (document.addEventListener)
                document.addEventListener('DOMContentLoaded', fn);
            else {
                document.attachEvent('onreadystatechange', function() {
                    if (document.readyState != 'loading')
                        fn();
                });
            }
        },
        wait: (function(originalArr, callback) {
            var self = this;
            self.eventsArray = [];
            self.varObj = {};
            self.originalArr = originalArr;
            return function(variable, functionName) {
                self.eventsArray.push(functionName);
                self.varObj[functionName] = variable;
                if (Utils.containsAll(self.eventsArray, self.originalArr))
                    callback(self.varObj);
            };
        }),
    };

    //export Utils
    window.Utils = Utils;

    //export querySelectors
    window.$qs = function(selector, scope) {
        return (scope || document).querySelector(selector);
    };

    window.$qsa = function(selector, scope) {
        return (scope || document).querySelectorAll(selector);
    };

    // Loop on nodes
    NodeList.prototype.forEach = Array.prototype.forEach;
})(window);