iOS Switches in CSS

Building Game Play Color gives me many opportunities and much encouragement to see explore what's possible with modern CSS. Most recently, I found myself wanting a near-native iOS enable/disable switch for a forthcoming feature.

While it's not perfect, it turns out that, with a little tinkering, something pretty good can be achieved (go ahead, try turning it on):

As one might hope, the HTML required is incredibly simple and looks something like this:

<div id="switch" class="setting-switch"></div>

With all the complexity remaining firmly in the CSS:

.setting-switch
{
  transition: 300ms ease-in-out;
  position: relative;
  width: 46px;
  height: 28px;
  border-radius: 28px;
  background-color: white;
  margin: 10px;
  border: 2px solid #E6E6E6;
}

.setting-switch:before
{
  transition: 300ms ease-in-out;
  content: '';
  display: block;
  width: 28px;
  height: 28px;
  border-radius: 28px;
  background-color: #fff;
  position: absolute;
  top: 0;
  left: 0;
  box-shadow: 0 6px 4px rgba(0, 0, 0, 0.1), 0 -1px 2px rgba(0, 0, 0, 0.1);
}

.setting-switch.on
{
  transition: 300ms ease-in-out;
  background-color: #4CD964;
  border: 2px solid #4CD964;
}

.setting-switch.on:before
{
  transition: 300ms ease-in-out;
  left: 18px;
}

The JavaScript itself is also simple when using something like JQuery:

var s = $("#switch")
s.click(function() {
    s.toggleClass("on");
});

If you're interested in playing further with the source, take a look at the JSFiddle.