how to pass data along with window.open? code example

Example: javascript open new window and pass data

// Store the return of the `open` command in a variable
var newWindow = window.open('http://www.mydomain.com');

// Access it using its variable
newWindow.my_childs_special_setting = "Hello World";

//In the child (popup) window, you could access a parent variable like this:
window.opener.my_parents_special_setting