JS toggleclass multiple solution

by Marc Chehab

HTML

<h1>
Macht bitte den Hintergrund von Box "C" rot!
</h1>
<div class="wrapper">
  <div onclick="classToggle(this)" class="box a" id="A">A</div>
  <div onclick="classToggle(this)" class="box b">B</div>
  <div onclick="classToggle(this)" class="box c rot">C</div>
  <div onclick="classToggle(this)" class="box d">D</div>
  <div onclick="classToggle(this)" class="box e">E</div>
  <div onclick="classToggle(this)" class="box f">F</div>
</div>

CSS

body {
  padding: 20px;
  font-family: Helvetica;
}

.wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  grid-gap: 10px;
  margin-bottom: 10px;
}

div.box {
  background-color: #20262e;
  color: #fff;
  border-radius: 3px;
  padding: 20px;
  font-size: 14px;
}

.box.rot {
  background-color: red;
}

JavaScript

function classToggle(elem) {
elem.classList.toggle("rot");
}