I appreciate the clarity of this trick that Mikael Ainalem posted over on Reddit:
It’s a one-liner that toggles the class on the <body> so you can mock up different states and toggle between them on click.
<body onclick="this.classList.toggle("active");">Could be on any element as well!
This can be a big thing. See “The Power of Changing Classes” as a case in point. Even if you aren’t much of a JavaScript person, classList is perhaps the one API you should know.
