passing values from child window to parent window

Question

Hi this is my first question in this site.

My problem is-I have created a jsp where in i have given one link to call another jsp (already created by some one) in a popup window.On saving some details in child window i want those values to be accessed in my parent window.But i dont have the permission to change the code of child window jsp. can anyone help me...? Thanks, the code i am using to open a popup is as follows.

function popUp(url){
    alert("inside popup");
    window.open(url,'newWindow','width=750,height=400,left=150,top=100,toolbar=no,resizable=true');
}

Answer 1

Provided the url does not violate the same origin policy , you can access the window properties via the return value of window.open() , eg

var windowRef = window.open(url, ...);

var someElement = windowRef.document.getElementById("element-id");

var someJavaScriptVar = windowRef.someVar;