HTMLIFrameElement.addNextPaintListener()

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 addNextPaintListener() method of the HTMLIFrameElement is used to define a handler to listen for the next MozAfterPaint event coming from the browser <iframe>.

This event provides information about what has been repainted. It is mainly used to investigate performance optimization.

Note: The handler will receive the event once and then be thrown away.

Syntax

instanceOfHTMLIframeElement.addNextPaintListener(listener);

Returns

Void.

Parameters

listener
A function handler to listen for a MozAfterPaint event.

Examples

var browser = document.querySelector('iframe');
function onNextPaint() {
  console.log("Paint has occured");
}
browser.addNextPaintListener(onNextPaint);

Specification

Not part of any specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support 47 (47)[1] No support No support No support
Feature Android Android Webview Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support No support No support No support No support No support No support

[1] Supported in chrome code only.

See also

Document Tags and Contributors

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 Contributors to this page: chrisdavidmills, teoli, ajaybhat, kscarfone, Jeremie
 Last updated by: chrisdavidmills,