Set a callback function to a new window in javascript

Question

Is there an easy way to set a \"callback\" function to a new window that is opened in javascript? I\'d like to run a function of the parent from the new window, but I want t

Answer 1

var newWindow = window.open(window.location.origin);

newWindow.onload = function() {
    $(newWindow.document.body).addClass('new-window-body-class');
};