what are webhooks code example

Example 1: what is webworker

web worker
Web Workers are a mechanism to create a separate thread 
in parallel to your main JS program thread. 
can only communicate with each other through normal async events 
always abide by the event-loop one-at-a-time behavior 
required by run-to-completion.

Example 2: what is WebGL

enables web content to use an API based on OpenGL ES 2.0 
to perform 3D rendering in an HTML  in browsers 
use  shader code that is executed on a computer's Graphics Processing Unit (GPU)
elements can be mixed with other HTML elements and 
COMPOSITED with other parts of the page or page background.