HTMLIFrameElement.zoom()

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

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

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support No No471 No No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No No No No No No ?

1. Supported in chrome code only.

See also

Document Tags and Contributors

Contributors to this page: fscholz, chrisdavidmills
Last updated by: fscholz,