/ Published in: JavaScript
found the solution here: http://stackoverflow.com/questions/2790001/fixing-javascript-array-functions-in-internet-explorer-indexof-foreach-etc
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// Add ECMA262-5 method binding if not supported natively // if (!('bind' in Function.prototype)) { Function.prototype.bind= function(owner) { var that= this; if (arguments.length<=1) { return function() { return that.apply(owner, arguments); }; } else { var args= Array.prototype.slice.call(arguments, 1); return function() { return that.apply(owner, arguments.length===0? args : args.concat(Array.prototype.slice.call(arguments))); }; } }; } // Add ECMA262-5 string trim if not supported natively // if (!('trim' in String.prototype)) { String.prototype.trim= function() { return this.replace(/^\s+/, '').replace(/\s+$/, ''); }; } // Add ECMA262-5 Array methods if not supported natively // if (!('indexOf' in Array.prototype)) { Array.prototype.indexOf= function(find, i /*opt*/) { if (i===undefined) i= 0; if (i<0) i+= this.length; if (i<0) i= 0; for (var n= this.length; i<n; i++) if (i in this && this[i]===find) return i; return -1; }; } if (!('lastIndexOf' in Array.prototype)) { Array.prototype.lastIndexOf= function(find, i /*opt*/) { if (i===undefined) i= this.length-1; if (i<0) i+= this.length; if (i>this.length-1) i= this.length-1; for (i++; i-->0;) /* i++ because from-argument is sadly inclusive */ if (i in this && this[i]===find) return i; return -1; }; } if (!('forEach' in Array.prototype)) { Array.prototype.forEach= function(action, that /*opt*/) { for (var i= 0, n= this.length; i<n; i++) if (i in this) action.call(that, this[i], i, this); }; } if (!('map' in Array.prototype)) { Array.prototype.map= function(mapper, that /*opt*/) { var other= new Array(this.length); for (var i= 0, n= this.length; i<n; i++) if (i in this) other[i]= mapper.call(that, this[i], i, this); return other; }; } if (!('filter' in Array.prototype)) { Array.prototype.filter= function(filter, that /*opt*/) { var other= [], v; for (var i=0, n= this.length; i<n; i++) if (i in this && filter.call(that, v= this[i], i, this)) other.push(v); return other; }; } if (!('every' in Array.prototype)) { Array.prototype.every= function(tester, that /*opt*/) { for (var i= 0, n= this.length; i<n; i++) if (i in this && !tester.call(that, this[i], i, this)) return false; return true; }; } if (!('some' in Array.prototype)) { Array.prototype.some= function(tester, that /*opt*/) { for (var i= 0, n= this.length; i<n; i++) if (i in this && tester.call(that, this[i], i, this)) return true; return false; }; }