Question

How do you create a Web Popup Window without referring to a new html file?

All the codes I’ve found requires to refer to a new file where the popup document sits.

Thanks for you help!

Answer 1

Pass about:blank as the target:

window.open('about:blank', 'name_of_window', 'popup');

If you want to manually construct a document:

var popup = window.open('about:blank', 'name_of_window', 'popup');
if (!popup) { // popup is `null` if the window is blocked
    // Otherwise, popup is the Window object of the popup
    popup.document.write('Test');
}