WebGLRenderingContext: isShader() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Note: This feature is available in Web Workers.

The WebGLRenderingContext.isShader() method of the WebGL API returns true if the passed WebGLShader is valid, false otherwise.

Syntax

js
isShader(shader)

Parameters

shader

A WebGLShader to check.

Return value

A GLboolean indicating whether or not the shader is valid.

Examples

Checking a shader

js
const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
const shader = gl.createShader(gl.VERTEX_SHADER);

// …

gl.isShader(shader);

Specifications

Specification
WebGL Specification
# 5.14.9

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
isShader

Legend

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Full support
Full support

See also