How to trigger the window resize event in JavaScript?

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I have registered a trigger on window resize. I want to know how I can trigger the event to be called. For example, when hide a div, I want my trigger function to be called.

I found window.resizeTo() can trigger the function, but is there any other solution?

10 Answers

I believe this should work for all browsers:

var event;
if (typeof (Event) === 'function') {
    event = new Event('resize');
} else { /*IE*/
    event = document.createEvent('Event');
    event.initEvent('resize', true, true);
}
window.dispatchEvent(event);

Response with RxJS

Say Like something in Angular

size$: Observable<number> = fromEvent(window, 'resize').pipe(
            debounceTime(250),
            throttleTime(300),
            mergeMap(() => of(document.body.clientHeight)),
            distinctUntilChanged(),
            startWith(document.body.clientHeight),
          );

If manual subscription desired (Or Not Angular)

this.size$.subscribe((g) => {
      console.log('clientHeight', g);
    })

Since my intial startWith Value might be incorrect (dispatch for correction)

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

In say Angular (I could..)

<div class="iframe-container"  [style.height.px]="size$ | async" >..
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