Toggle

by freginold

HTML

<div class="RevealCard">
  <h3 class="RevealCard-header">
  <span id="collapseChar">&minus;</span>Top five loves
  </h3>
  <ol class="RevealCard-list">
  <li>First item</li>
  <li>Second item</li>
  <li>Third item</li>
  <li>Fourth item</li>
  <li>Fifth item</li>
  </ol>
 </div>

CSS

RevealCard-header {
  background: #000;
  border-radius: 4px 4px 0 0;
  color: #fff;
  font-size: 1.2em;
  font-weight: normal;
  margin: 0;
  padding: 0.5em;
  position: relative;
}

.RevealCard-header::after {
  border: 1px solid #fff;
  content: "-";
  height: 1.15em;
  line-height: 1em;
  position: absolute;
  right: 0.5em;
  text-align: center;
  width: 1.15em;
}

.RevealCard-list {
  border: 1px solid #000;
  border-top: none;
  margin: 0 0 2em 0;
  padding-bottom: 1em;
  padding-top: 1em;
}

#collapseChar {
  margin-right: 3px;
}

JavaScript

var header = document.getElementsByClassName('RevealCard-header')[0];
var list = document.getElementsByClassName('RevealCard-list')[0];
var collapseChar = document.getElementById('collapseChar');

header.addEventListener('click', function(){
	// toggle list on click
  if (list.style.display.toLowerCase() != "none") {
  	// hide list
    list.style.display = "none";
    collapseChar.innerHTML = "&plus;";
  }
  else {
  	// show list
    list.style.display = "block";
    collapseChar.innerHTML = "&minus;";    
  }
})