Text area of code and run it in other canvas

Raz

I've seen that in the hello processing that there are exercises. And in this exercises there are two semi-canvases: one is text area where you can write the code, and the other is where the canvas of the code. I need to write something same to this exercise. How can I do this on p5.js?

blindfish

Look at the p5js examples in the reference. They all do exactly that, so you can just check the source of the page...