WebGLRenderingContext: getShaderParameter() 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.getShaderParameter() method of the WebGL API returns information about the given shader.

getShaderParameter(shader, pname)

A WebGLShader to get parameter information from.

A GLenum specifying the information to query. Possible values:

gl.DELETE_STATUS: Returns a GLboolean indicating whether or not the shader is flagged for deletion.
gl.COMPILE_STATUS: Returns a GLboolean indicating whether or not the last shader compilation was successful.
gl.SHADER_TYPE: Returns a GLenum indicating whether the shader is a vertex shader (gl.VERTEX_SHADER) or fragment shader (gl.FRAGMENT_SHADER) object.

Returns the requested shader information (as specified with pname).

gl.getShaderParameter(shader, gl.SHADER_TYPE);

Specification
WebGL Specification # 5.14.9

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