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Showing content from https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/drawArraysInstanced below:

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drawArraysInstanced(mode, first, count, instanceCount)

A GLenum specifying the type primitive to render. Possible values are:

gl.POINTS: Draws a single dot.
gl.LINE_STRIP: Draws a straight line to the next vertex.
gl.LINE_LOOP: Draws a straight line to the next vertex, and connects the last vertex back to the first.
gl.LINES: Draws a line between a pair of vertices.
gl.TRIANGLE_STRIP
gl.TRIANGLE_FAN
gl.TRIANGLES: Draws a triangle for a group of three vertices.

A GLint specifying the starting index in the array of vector points.

A GLsizei specifying the number of indices to be rendered.

A GLsizei specifying the number of instances of the range of elements to execute.

gl.drawArraysInstanced(gl.POINTS, 0, 8, 4);

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