HTMLIFrameElement.addNextPaintListener()

Warning: Removed in Firefox 65.

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

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

Unlikely ever to be supported in other browsers.

See also

Document Tags and Contributors

Last updated by: chrisdavidmills,