code: function removeRipple(e, el, ripple) {
  
          // Check if the ripple still exist
          if (!ripple) {
              return;
          }
  
          ripple.classList.remove('waves-rippling');
  
          var relativeX = ripple.getAttribute('data-x');
          var relativeY = ripple.getAttribute('data-y');
          var scale     = ripple.getAttribute('data-scale');
          var translate = ripple.getAttribute('data-translate');
  
          // Get delay beetween mousedown and mouse leave
          var diff = Date.now() - Number(ripple.getAttribute('data-hold'));
          var delay = 350 - diff;
  
          if (delay < 0) {
              delay = 0;
          }
  
          if (e.type === 'mousemove') {
              delay = 150;
          }
  
          // Fade out ripple after delay
          var duration = e.type === 'mousemove' ? 2500 : Effect.duration;
  
          setTimeout(function() {
  
              var style = {
                  top: relativeY + 'px',
                  left: relativeX + 'px',
                  opacity: '0',
  
                  // Duration
                  '-webkit-transition-duration': duration + 'ms',
                  '-moz-transition-duration': duration + 'ms',
                  '-o-transition-duration': duration + 'ms',
                  'transition-duration': duration + 'ms',
                  '-webkit-transform': scale + ' ' + translate,
                  '-moz-transform': scale + ' ' + translate,
                  '-ms-transform': scale + ' ' + translate,
                  '-o-transform': scale + ' ' + translate,
                  'transform': scale + ' ' + translate
              };
  
              ripple.setAttribute('style', convertStyle(style));
  
              setTimeout(function() {
                  try {
                      el.removeChild(ripple);
                  } catch (e) {
                      return false;
                  }
              }, duration);
  
          }, delay);
      }
docs: Hide the effect and remove the ripple. Must be
  a separate function to pass the JSLint...