How to draw a pyramid in javasctipt

Answer 1

The whole fun in programming is challenging yourself.
That's how you develop your skills.

Answer 2

Anyway, your question isn't accurate enough...

You can "draw" by many way... with css 3D transform features, <canvas> context or <svg> one... using WebGL or not... as static or dynamic 3D to 2D projection... what kind of projection... and so on ^^...