EXT_disjoint_timer_query: isQueryEXT() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

See full compatibility

The EXT_disjoint_timer_query.isQueryEXT() method of the WebGL API returns true if the passed object is a WebGLQuery object.

Syntax

isQueryEXT(query)

Parameters

query: A WebGLQuery object to test.

Return value

A GLboolean indicating whether the given object is a WebGLQuery object (true) or not (false).

Examples

const ext = gl.getExtension("EXT_disjoint_timer_query");
const query = ext.createQueryEXT();

// …

ext.isQueryEXT(query);

Specifications

Specification
WebGL EXT_disjoint_timer_query Extension Specification

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`isQueryEXT`	Chrome – No support Chrome 47 – 64 (Release date: 2015-12-01) footnote Removed in 65 and later footnote Removed due to the GLitch exploit. Chrome – Partial support Chrome 70 (Release date: 2018-10-16) footnote Partial support footnote Only supported on macOS.	Edge – Partial support Edge 79 (Release date: 2020-01-15) footnote Partial support footnote Only supported on macOS.	Firefox – No support Firefox 51 – 58 (Release date: 2017-01-24) footnote Removed in 59 and later footnote Removed due to the GLitch exploit.	Opera – No support Opera 34 – 51 (Release date: 2015-12-08) footnote Removed in 52 and later footnote Removed due to the GLitch exploit. Opera – Partial support Opera 57 (Release date: 2018-11-28) footnote Partial support footnote Only supported on macOS.	Safari – No support Safari footnote No support	Chrome Android – No support Chrome Android 47 – 64 (Release date: 2015-12-02) footnote Removed in 65 and later footnote Removed due to the GLitch exploit.	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – No support Opera Android 34 – 46 (Release date: 2015-12-16) footnote Removed in 47 and later footnote Removed due to the GLitch exploit.	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet 5 – 8.2 (Release date: 2016-12-15) footnote Removed in 9 and later footnote Removed due to the GLitch exploit.	WebView Android – No support WebView Android 47 – 64 (Release date: 2015-12-02) footnote Removed in 65 and later footnote Removed due to the GLitch exploit.	WebView on iOS – No support WebView on iOS footnote No support

Tip: you can click/tap on a cell for more information.

Full support: Full support
Partial support: Partial support
No support: No support
: Has more compatibility info.