iOS 7 Style Animated Switch Control With Javascript and CSS3

A small Javascript widget to convert a checkbox into an iOS 7 styled on/off switch with CSS3 transitions, inspired from daneden.

How to use it:

Create a checkbox with two toggle labels.

<label class="toggler toggler--is-active" id="filt-css">CSS</label>
<div class="toggle">
  <input type="checkbox" id="switcher" class="check">
  <b class="b switch"></b> </div>
<label class="toggler" id="filt-javascript">Javascript</label>

The CSS/CSS3 styles. Create awesome iOS 7 style sliding effect using CSS3 transitions.

.toggle,
.toggler {
  display: inline-block;
  vertical-align: middle;
  margin: 10px;
}
.toggler {
  color: slategray;
  transition: .2s;
}
.toggler--is-active { color: black; }
.b { display: block; }
.toggle {
  width: 100px;
  height: 60px;
  border-radius: 100px;
  background-color: #2ecc71;
  overflow: hidden;
  box-shadow: inset 0 0 2px 1px rgba(0, 0, 0, 0.05);
}
.check {
  position: absolute;
  display: block;
  cursor: pointer;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  z-index: 6;
}
.check:checked ~ .switch {
  right: 2px;
  left: 37.5%;
  transition: 0.25s cubic-bezier(0.785, 0.135, 0.15, 0.86);
  transition-property: left, right;
  transition-delay: .08s, 0s;
}
.switch {
  position: absolute;
  left: 2px;
  top: 2px;
  bottom: 2px;
  right: 37.5%;
  background-color: #fff;
  border-radius: 36px;
  z-index: 1;
  transition: 0.25s cubic-bezier(0.785, 0.135, 0.15, 0.86);
  transition-property: left, right;
  transition-delay: 0s, .08s;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

The Javascript to enable the switch control.

var e = document.getElementById("filt-css"),
    d = document.getElementById("filt-javascript"),
    t = document.getElementById("switcher");
e.addEventListener("click", function(){
  t.checked = false;
  e.classList.add("toggler--is-active");
  d.classList.remove("toggler--is-active");
});
d.addEventListener("click", function(){
  t.checked = true;
  d.classList.add("toggler--is-active");
  e.classList.remove("toggler--is-active");
});
t.addEventListener("click", function(){
  d.classList.toggle("toggler--is-active");
  e.classList.toggle("toggler--is-active");
})