HTMLIFrameElement.zoom()

Warning: Removed in Firefox 65.

The zoom() method of the HTMLIFrameElement interface changes the zoom factor of the browser <iframe>'s content. This is particularly useful for zooming in/out on non-touch-enabled devices.

Syntax

var instanceOfDOMRequest = instanceOfHTMLIframeElement.zoom(zoomFactor);

Returns

Void.

Parameters

zoomFactor: A unitless number value representing the amount to zoom in or out. It acts like a percentage, so for example 1.1 would zoom in by 10%, whereas 0.9 would zoom out by 10%.

Examples

var browser = document.querySelector('iframe');

var zoomFactor = 1;

zoomIn.addEventListener('touchend',function() {
  zoomFactor += 0.1;
  browser.zoom(zoomFactor);
});

zoomOut.addEventListener('touchend',function() {
  zoomFactor -= 0.1;
  browser.zoom(zoomFactor);
});

Specification

Not part of any specification.

Browser compatibility

Supported since Firefox 47, in chrome code only. Removed completely in Firefox 65.

Unlikely ever to be supported in other browsers.