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WebGLRenderingContext: getError() method

The WebGLRenderingContext.getError() method of the WebGL API returns error information.

getError()

None.

Constant	Description
`gl.NO_ERROR`	No error has been recorded. The value of this constant is 0.
`gl.INVALID_ENUM`	An unacceptable value has been specified for an enumerated argument. The command is ignored and the error flag is set.
`gl.INVALID_VALUE`	A numeric argument is out of range. The command is ignored and the error flag is set.
`gl.INVALID_OPERATION`	The specified command is not allowed for the current state. The command is ignored and the error flag is set.
`gl.INVALID_FRAMEBUFFER_OPERATION`	The currently bound framebuffer is not framebuffer complete when trying to render to or to read from it.
`gl.OUT_OF_MEMORY`	Not enough memory is left to execute the command.
`gl.CONTEXT_LOST_WEBGL`	If the WebGL context is lost, this error is returned on the first call to `getError`. Afterwards and until the context has been restored, it returns `gl.NO_ERROR`.

gl.getError(); // gl.NO_ERROR (0)

gl.enable(gl.FOOBAR);
gl.getError(); // gl.INVALID_ENUM;

Specification
WebGL Specification # 5.14.3

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`getError`	9	12	4	11	12	5.1	4.4.3	25	4	12	8	1.5