Editor Not Working

Question

I was using the code playground, and I used "setTimeout" to wait for the HTML to load before I tried to access an H1 element with JS. However, this prevented any HTML from being displayed, even thought I had a bunch of buttons as well as the H1. I deleted setTimeout, but now none of the HTML will work!! Does anyone know how to fix this? Is it an error on the developer's part?
I've tried removing and re-adding characters, and I did "Save As" to fix it, but neither worked.

Answer 1

Can you post your code..