EXT_disjoint_timer_query.isQueryEXT()

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

Syntax

GLBoolean ext.isQueryEXT(query);

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

var ext = gl.getExtension('EXT_disjoint_timer_query');
var query = ext.createQueryEXT();

// ...

ext.isQueryEXT(query);

Specification
WebGL EXT_disjoint_timer_query Extension Specification (WebGL EXT_disjoint_timer_query Extension)

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`isQueryEXT`	47-65 Removed due to the GLitch exploit.	No	51-59 Removed due to the GLitch exploit.	No	34-52 Removed due to the GLitch exploit.	No	47-65 Removed due to the GLitch exploit.	47-65 Removed due to the GLitch exploit.	No	34-47 Removed due to the GLitch exploit.	No	5.0-9.0 Removed due to the GLitch exploit.