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// addEventListener Polyfill ie9- http://stackoverflow.com/a/27790212 window.addEventListener = window.addEventListener || function (e, f) { window.attachEvent('on' + e, f); }; // Datenow Polyfill ie9- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/now if (!Date.now) { Date.now = function now() { return new Date().getTime(); }; } // Object.create monkey patch ie8 http://stackoverflow.com/a/18020326 if ( ! Object.create ) { Object.create = function(proto, props) { if (typeof props !== "undefined") { throw "The multiple-argument version of Object.create is not provided by this browser and cannot be shimmed."; } function ctor() { } ctor.prototype = proto; return new ctor(); }; } //https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter // filter() was added to the ECMA-262 standard in the 5th edition; as such it may not be present in all implementations of the standard. // You can work around this by inserting the following code at the beginning of your scripts, allowing use of filter() in ECMA-262 implementations which do not natively support it. // This algorithm is exactly the one specified in ECMA-262, 5th edition, assuming that fn.call evaluates to the original value of Function.prototype.call(), and that Array.prototype.push() has its original value. if ( ! Array.prototype.filter ) { Array.prototype.filter = function(fun/*, thisArg*/) { 'use strict'; if (this === void 0 || this === null) { throw new TypeError(); } var t = Object(this); var len = t.length >>> 0; if (typeof fun !== 'function') { throw new TypeError(); } var res = []; var thisArg = arguments.length >= 2 ? arguments[1] : void 0; for (var i = 0; i < len; i++) { if (i in t) { var val = t[i]; // NOTE: Technically this should Object.defineProperty at // the next index, as push can be affected by // properties on Object.prototype and Array.prototype. // But that method's new, and collisions should be // rare, so use the more-compatible alternative. if (fun.call(thisArg, val, i, t)) { res.push(val); } } } return res; }; } //map was added to the ECMA-262 standard in the 5th edition; as such it may not be present in all implementations of the standard. You can work around this by inserting the following code at the beginning of your scripts, allowing use of map in implementations which do not natively support it. This algorithm is exactly the one specified in ECMA-262, 5th edition, assuming Object, TypeError, and Array have their original values and that callback.call evaluates to the original value of Function.prototype.call. // Production steps of ECMA-262, Edition 5, 15.4.4.19 // Reference: http://es5.github.io/#x15.4.4.19 if (!Array.prototype.map) { Array.prototype.map = function(callback, thisArg) { var T, A, k; if (this == null) { throw new TypeError(' this is null or not defined'); } // 1. Let O be the result of calling ToObject passing the |this| // value as the argument. var O = Object(this); // 2. Let lenValue be the result of calling the Get internal // method of O with the argument "length". // 3. Let len be ToUint32(lenValue). var len = O.length >>> 0; // 4. If IsCallable(callback) is false, throw a TypeError exception. // See: http://es5.github.com/#x9.11 if (typeof callback !== 'function') { throw new TypeError(callback + ' is not a function'); } // 5. If thisArg was supplied, let T be thisArg; else let T be undefined. if (arguments.length > 1) { T = thisArg; } // 6. Let A be a new array created as if by the expression new Array(len) // where Array is the standard built-in constructor with that name and // len is the value of len. A = new Array(len); // 7. Let k be 0 k = 0; // 8. Repeat, while k < len while (k < len) { var kValue, mappedValue; // a. Let Pk be ToString(k). // This is implicit for LHS operands of the in operator // b. Let kPresent be the result of calling the HasProperty internal // method of O with argument Pk. // This step can be combined with c // c. If kPresent is true, then if (k in O) { // i. Let kValue be the result of calling the Get internal // method of O with argument Pk. kValue = O[k]; // ii. Let mappedValue be the result of calling the Call internal // method of callback with T as the this value and argument // list containing kValue, k, and O. mappedValue = callback.call(T, kValue, k, O); // iii. Call the DefineOwnProperty internal method of A with arguments // Pk, Property Descriptor // { Value: mappedValue, // Writable: true, // Enumerable: true, // Configurable: true }, // and false. // In browsers that support Object.defineProperty, use the following: // Object.defineProperty(A, k, { // value: mappedValue, // writable: true, // enumerable: true, // configurable: true // }); // For best browser support, use the following: A[k] = mappedValue; } // d. Increase k by 1. k++; } // 9. return A return A; }; }