WebGL2RenderingContext: isQuery() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.

Note: This feature is available in Web Workers.

The WebGL2RenderingContext.isQuery() method of the WebGL 2 API returns true if the passed object is a valid WebGLQuery object.

Syntax

isQuery(query)

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

gl must be a WebGL2RenderingContext. WebGLQuery objects are not available in WebGL 1.

const query = gl.createQuery();

// …

gl.isQuery(query);

Specification
WebGL 2.0 Specification # 3.7.12

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`isQuery`	Chrome – Full support Chrome 56 (Release date: 2017-01-25) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 51 (Release date: 2017-01-24) footnote Full support	Opera – Full support Opera 43 (Release date: 2017-02-07) footnote Full support	Safari – Full support Safari 15 (Release date: 2021-09-20) footnote Full support	Chrome Android – Full support Chrome Android 58 (Release date: 2017-04-25) footnote Full support	Firefox for Android – Full support Firefox for Android 51 (Release date: 2017-01-24) footnote Full support	Opera Android – Full support Opera Android 43 (Release date: 2017-09-27) footnote Full support	Safari on iOS – Full support Safari on iOS 15 (Release date: 2021-09-20) footnote Full support	Samsung Internet – Full support Samsung Internet 7 (Release date: 2018-03-16) footnote Full support	WebView Android – Full support WebView Android 58 (Release date: 2017-04-25) footnote Full support	WebView on iOS – Full support WebView on iOS 15 (Release date: 2021-09-20) footnote Full support

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