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@egermano

egermano/ie-fix.js

Created Nov 26, 2013
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ECMA Script fixes for IE
'use strict';
// Add ECMA262-5 method binding if not supported natively
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
if (!Function.prototype.bind) {
Function.prototype.bind = function (oThis) {
if (typeof this !== "function") {
// closest thing possible to the ECMAScript 5 internal IsCallable function
throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
}
var aArgs = Array.prototype.slice.call(arguments, 1),
fToBind = this,
fNOP = function () {},
fBound = function () {
return fToBind.apply(this instanceof fNOP && oThis
? this
: oThis,
aArgs.concat(Array.prototype.slice.call(arguments)));
};
fNOP.prototype = this.prototype;
fBound.prototype = new fNOP();
return fBound;
};
}
// Add ECMA262-5 string trim if not supported natively
//https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim
if (!String.prototype.trim) {
String.prototype.trim = function () {
return this.replace(/^\s+|\s+$/g, '');
};
}
// Add ECMA262-5 Array methods if not supported natively
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
if (!Array.prototype.indexOf) {
Array.prototype.indexOf = function (searchElement , fromIndex) {
var i,
pivot = (fromIndex) ? fromIndex : 0,
length;
if (!this) {
throw new TypeError();
}
length = this.length;
if (length === 0 || pivot >= length) {
return -1;
}
if (pivot < 0) {
pivot = length - Math.abs(pivot);
}
for (i = pivot; i < length; i++) {
if (this[i] === searchElement) {
return i;
}
}
return -1;
};
}
//https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/lastIndexOf
if (!Array.prototype.lastIndexOf) {
Array.prototype.lastIndexOf = function(searchElement /*, fromIndex*/) {
'use strict';
if (this == null) {
throw new TypeError();
}
var n, k,
t = Object(this),
len = t.length >>> 0;
if (len === 0) {
return -1;
}
n = len;
if (arguments.length > 1) {
n = Number(arguments[1]);
if (n != n) {
n = 0;
}
else if (n != 0 && n != (1 / 0) && n != -(1 / 0)) {
n = (n > 0 || -1) * Math.floor(Math.abs(n));
}
}
for (k = n >= 0
? Math.min(n, len - 1)
: len - Math.abs(n); k >= 0; k--) {
if (k in t && t[k] === searchElement) {
return k;
}
}
return -1;
};
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
if (!Array.prototype.forEach) {
Array.prototype.forEach = function (fn, scope) {
'use strict';
var i, len;
for (i = 0, len = this.length; i < len; ++i) {
if (i in this) {
fn.call(scope, this[i], i, this);
}
}
};
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
// Production steps of ECMA-262, Edition 5, 15.4.4.19
// Reference: http://es5.github.com/#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, : true, Enumerable: true, Configurable: true},
// and false.
// In browsers that support Object.defineProperty, use the following:
// Object.defineProperty(A, Pk, { 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;
};
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
if (!Array.prototype.filter)
{
Array.prototype.filter = function(fun /*, thisp */)
{
"use strict";
if (this == null)
throw new TypeError();
var t = Object(this);
var len = t.length >>> 0;
if (typeof fun != "function")
throw new TypeError();
var res = [];
var thisp = arguments[1];
for (var i = 0; i < len; i++)
{
if (i in t)
{
var val = t[i]; // in case fun mutates this
if (fun.call(thisp, val, i, t))
res.push(val);
}
}
return res;
};
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
if (!Array.prototype.every) {
Array.prototype.every = function(fun /*, thisp */) {
'use strict';
var t, len, i, thisp;
if (this == null) {
throw new TypeError();
}
t = Object(this);
len = t.length >>> 0;
if (typeof fun !== 'function') {
throw new TypeError();
}
thisp = arguments[1];
for (i = 0; i < len; i++) {
if (i in t && !fun.call(thisp, t[i], i, t)) {
return false;
}
}
return true;
};
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some
if (!Array.prototype.some) {
Array.prototype.some = function(fun /*, thisp */) {
'use strict';
if (this == null) {
throw new TypeError();
}
var thisp, i,
t = Object(this),
len = t.length >>> 0;
if (typeof fun !== 'function') {
throw new TypeError();
}
thisp = arguments[1];
for (i = 0; i < len; i++) {
if (i in t && fun.call(thisp, t[i], i, t)) {
return true;
}
}
return false;
};
}
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