// IE8 Fix
if (typeof Array.prototype.forEach !== 'function') {
Array.prototype.forEach = function(callback){
for (var i = 0; i < this.length; i++){
callback.apply(this, [this[i], i, this]);
}
};
}
if (typeof Array.prototype.indexOf !== 'function') {
Array.prototype.indexOf = function(elt /*, from*/)
{
var len = this.length >>> 0;
var from = Number(arguments[1]) || 0;
from = (from < 0)
? Math.ceil(from)
: Math.floor(from);
if (from < 0)
from += len;
for (; from < len; from++)
{
if (from in this &&
this[from] === elt)
return from;
}
return -1;
};
}
if (typeof Array.isArray !== 'function') {
Array.isArray = function (obj) {
return Object.prototype.toString.call(obj) === "[object Array]";
};
}
if (typeof Array.prototype.map !== 'function') {
Array.prototype.map = function (f) {
var r = [];
for (var i = 0; i < this.length; i++) {
r.push(f(this[i]));
}
return r
}
}
if(typeof String.prototype.trim !== 'function') {
String.prototype.trim = function() {
return this.replace(/^\s+|\s+$/g, '');
}
}
if(typeof Object.keys !== 'function') {
Object.keys = (function () {
'use strict';
var hasOwnProperty = Object.prototype.hasOwnProperty,
hasDontEnumBug = !({toString: null}).propertyIsEnumerable('toString'),
dontEnums = [
'toString',
'toLocaleString',
'valueOf',
'hasOwnProperty',
'isPrototypeOf',
'propertyIsEnumerable',
'constructor'
],
dontEnumsLength = dontEnums.length;
return function (obj) {
if (typeof obj !== 'object' && (typeof obj !== 'function' || obj === null)) {
throw new TypeError('Object.keys called on non-object');
}
var result = [], prop, i;
for (prop in obj) {
if (hasOwnProperty.call(obj, prop)) {
result.push(prop);
}
}
if (hasDontEnumBug) {
for (i = 0; i < dontEnumsLength; i++) {
if (hasOwnProperty.call(obj, dontEnums[i])) {
result.push(dontEnums[i]);
}
}
}
return result;
};
}());
}
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