I want to assign a value which comes under xml to a variable that I need to us under javascript. or to put it better, I want to assign the value of output of a query to a variable that i need to use under javascript.

I want to assign a value which comes under xml to a variable that I need to us under javascript. or to put it better, I want to assign the value of output of a query to a variable that i need to use under javascript.