How to split a particular word from a sentence using JQuery

I need to check th开发者_如何学Pythone value of a particular variable alone from set of variables using JQuery.....

This is my code

 return "{" + string.Format("IsPreviewed:'{0}',PreviewdUrl:'{1}',IsFreeVideo:'{2}'",
                             parameters[12],pranu,jithu) +"}";

The value will be returned to a function in a .Js file for ex: uploader.Js where i will store all these values in a variable.

From this variable i need to check whether the pranu variable contains a value like www.google.com ,jithu variable has a boolean value either true or false using JQuery

Can any one provide some ideas or sample coding to help me solve this task......

So, if I've understood correctly you just want to pull out the pranu variable from the string?

var foo = "IsPreviewed:'1',PreviewdUrl:'www.google.co.uk',IsFreeVideo:'y'";

var variable = "PreviewdUrl";

// Get the start of the string, add 2 to gnore the preceeding :'
var startIndex = foo.indexOf(variable) + variable.length + 2; 
var endIndex = foo.indexOf(",", startIndex) - 1; // Remove the end '

alert(foo.substring(startIndex, endIndex));

Here's a working example.