<!-- required files -->
<link href="../assets/plugins/abpetkov-powerange/dist/powerange.min.css" rel="stylesheet" />
<script src="../assets/plugins/abpetkov-powerange/dist/powerange.min.js"></script>

<!-- html -->
<div class="powerange-wrapper">
  <input type="text" id="powerange-default" />
</div>

<!-- script -->
<script>
  var elm = document.getElementById('powerange-default');
  var powerange = new Powerange(this, {
    disable: false,
    disableOpacity: 0.5,
    decimal: false,
    hideRange: false,
    klass: '',
    min: 0,
    max: 100,
    start: 70,
    step: null,
    vertical: false
  });

  elm.value;  // get value
</script>