How to trigger the window resize event in JavaScript?

Seems to work with Chrome, FF, Safari, but not: IE !

 window.dispatchEvent(new Event('resize'));

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That didnt work on all devices for me. I had to trigger the event like this:

var evt = document.createEvent('UIEvents');
evt.initUIEvent('resize', true, false, window, 0);
window.dispatchEvent(evt);