Body Toggle

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Chris Coyier on

Learn Development at Frontend Masters

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.