While working with string in javascript sometimes we need to remove whitespace from the beginning and end of a string. Just do something like this:

String.prototype.trim=function(){ return this.replace(/^\s*|\s*$/g,”); } String.prototype.ltrim=function(){ return this.replace(/^\s*/g,”); } String.prototype.rtrim=function(){ return this.replace(/\s*$/g,”); }

How to use:

var myString = ‘    mystring      ‘;
sTrim=myString.trim();      //return ‘mystring’
sLTrim=myString.ltrim();    //return ‘mystring      ‘
sRTrim=myString.rtrim();   //return  ‘    mystring’