Do wish Thimble would have had a future as the embedded editor so we could have connected the documentation to an assessment engine but having the codepen and jsfiddle examples are awesome.
In other thx @Mozilla news h/t to @mozdevnet
Not sure what team both, paid and volunteer contributors, who has been leading up efforts at MDN but massive improvement in the documentation over the last few years. Hitting the sweet spot really between documentation and tutorials.