Question

How can i get one user control id inside another user control. Using java script .
Please help me.

 window.onload = function CheckQueryString() 
 {      
  // here i want to get user control id

 }

Answer 1

If I am correct in comprehending your question, you could do something like this

// get a handle on your original control 
var myControl = $('[id$="<controlID>"]'); 
// and then access it's properties 
var myRuntimeId = myControl.eq(0).attr('id');