WebGL2RenderingContext: isQuery() method

{{APIRef("WebGL")}}{{AvailableInWorkers}}

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

Syntax

isQuery(query)

Parameters

• query
  • : A {{domxref("WebGLQuery")}} object to test.

Return value

A {{domxref("WebGL_API/Types", "GLboolean")}} indicating whether the given object is a valid {{domxref("WebGLQuery")}} object (true) or not (false).

Examples

gl must be a {{domxref("WebGL2RenderingContext")}}. WebGLQuery objects are not available in WebGL 1.

const query = gl.createQuery();

// …

gl.isQuery(query);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("WebGLQuery")}}