Problem, we need to trim strings in javascript but its not implemented in all browsers Since new Browsers (IE9+) have trim() already implemented, you should only implement trim() if it is not already available on the Prototype-Object (overriding it is a huge performance hit). This is generally recommended when extending Native Objects! Note that…

gistfile1.txt

if (!String.prototype.trim) {
   String.prototype.trim=function(){return this.replace(/^\s+|\s+$/g, '');};
}