Material Design Content Slider With JavaScript And CSS3

A Material Design inspired content slider with a cool gooey animation on navigation dots, made using JavaScript and CSS3.

How to use it:

Add your slide content together with navigation dots into the slider.

<div class="slider" data-pos="0">
  <div class="slider__slides">
    <div class="slider__slide"></div>
    <div class="slider__slide"></div>
    <div class="slider__slide"></div>
    <div class="slider__slide"></div>
  </div>
  <div class="slider__dots">
    <a href="#" class="slider__indicator"></a>
    <a href="#" class="slider__dot" data-pos="0"></a>
    <a href="#" class="slider__dot" data-pos="1"></a>
    <a href="#" class="slider__dot" data-pos="2"></a>
    <a href="#" class="slider__dot" data-pos="3"></a>
  </div>
</div>

The core CSS/CSS3 for the slider.

.slider {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.slider__slides {
  position: relative;
  width: 400%;
  height: 100%;
  -webkit-transition: -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
  transition: -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
  transition: transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
  transition: transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1), -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
  will-change: transform;
}
.slider[data-pos="0"] .slider__slides {
  -webkit-transform: translateX(0%);
  transform: translateX(0%);
}
.slider[data-pos="1"] .slider__slides {
  -webkit-transform: translateX(-25%);
  transform: translateX(-25%);
}
.slider[data-pos="2"] .slider__slides {
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
}
.slider[data-pos="3"] .slider__slides {
  -webkit-transform: translateX(-75%);
  transform: translateX(-75%);
}
.slider__slide {
  float: left;
  width: 25%;
  height: 100%;
}
.slider__dots {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  position: absolute;
  bottom: 1.5em;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
}
.slider__dot, .slider__indicator {
  display: block;
  margin: 0 0.5em;
  width: 1em;
  height: 1em;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 100px;
}
.slider__indicator {
  position: absolute;
  background: white;
  width: auto;
}
.slider__indicator--left {
  -webkit-transition: left 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15);
  transition: left 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15);
}
.slider__indicator--right {
  -webkit-transition: left 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15);
  transition: left 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15);
}
.slider[data-pos="0"] .slider__indicator {
  left: 0em;
  right: 6em;
}
.slider[data-pos="1"] .slider__indicator {
  left: 2em;
  right: 4em;
}
.slider[data-pos="2"] .slider__indicator {
  left: 4em;
  right: 2em;
}
.slider[data-pos="3"] .slider__indicator {
  left: 6em;
  right: 0em;
}

The core JavaScript to active the slider.

var dots = 4;
var sliderElem = document.querySelector('.slider');
var dotElems = sliderElem.querySelectorAll('.slider__dot');
var indicatorElem = sliderElem.querySelector('.slider__indicator');
Array.prototype.forEach.call(dotElems, function (dotElem) {
    dotElem.addEventListener('click', function (e) {
        var currentPos = parseInt(sliderElem.getAttribute('data-pos'));
        var newPos = parseInt(dotElem.getAttribute('data-pos'));
        var newDirection = newPos > currentPos ? 'right' : 'left';
        var currentDirection = newPos < currentPos ? 'right' : 'left';
        indicatorElem.classList.remove('slider__indicator--' + currentDirection);
        indicatorElem.classList.add('slider__indicator--' + newDirection);
        sliderElem.setAttribute('data-pos', newPos);
    });
});