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

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See also