ripple effect

index.html

<button class="blup active"></button>

ripple.js

/*$('.blup').on('click', function() {
  $(this).toggleClass('active');
});*/

// next js by http://codepen.io/idiotWu/pen/nefhC
var addRippleEffect = function (e) {
    var target = e.target;
    if (target.tagName.toLowerCase() !== 'button') return false;
    var rect = target.getBoundingClientRect();
    var ripple = target.querySelector('.ripple');
    if (!ripple) {
        ripple = document.createElement('span');
        ripple.className = 'ripple';
        ripple.style.height = ripple.style.width = Math.max(rect.width, rect.height) + 'px';
        target.appendChild(ripple);
    }
    ripple.classList.remove('show');
    var top = e.pageY - rect.top - ripple.offsetHeight / 4 - document.body.scrollTop;
    var left = e.pageX - rect.left - ripple.offsetWidth / 4 - document.body.scrollLeft;
    ripple.style.top = top + 'px';
    ripple.style.left = left + 'px';
    ripple.classList.add('show');
    return false;
}

document.addEventListener('click', addRippleEffect, false);

ripple.scss

body {
  background: #3F51B5;
}

.blup {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 60px;
  height: 60px;
  margin-top: -30px;
  margin-left: -30px;
  background: #448AFF;
  border: none;
  border-radius: 100%;
  animation: blup .8s both;
  transition: all .5s cubic-bezier(.2, .8, .2, 1.15);
  overflow: hidden;
  user-select: none;
  box-shadow: 0px 10px 35px 0px rgba(0,0,0,.5);
  
  &.active {
    width: 200px;
    height: 200px;
    margin-top: -100px;
    margin-left: -100px;
    border-radius: 100%;
    animation: blup .8s both;
  }
  
  &:active {
    animation: inherite;
    transform: scale(.95);
     box-shadow: 0px 2px 10px 0px rgba(0,0,0,.5);
  }
  
  &:focus {
    outline: none;
  }
}

@keyframes blup {
    0% { 
        transform: matrix3d(.7, 0, 0, 0, 0, .7, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    2.083333% {
        transform: matrix3d(0.75266, 0, 0, 0, 0, 0.76342, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    4.166667% {
        transform: matrix3d(0.81071, 0, 0, 0, 0, 0.84545, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    6.25% {
        transform: matrix3d(0.86808, 0, 0, 0, 0, 0.9286, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    8.333333% {
        transform: matrix3d(0.92038, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    10.416667% {
        transform: matrix3d(0.96482, 0, 0, 0, 0, 1.05202, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    12.5% {
        transform: matrix3d(1, 0, 0, 0, 0, 1.08204, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    14.583333% {
        transform: matrix3d(1.02563, 0, 0, 0, 0, 1.09149, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    16.666667% {
        transform: matrix3d(1.04227, 0, 0, 0, 0, 1.08453, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    18.75% {
        transform: matrix3d(1.05102, 0, 0, 0, 0, 1.06666, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    20.833333% {
        transform: matrix3d(1.05334, 0, 0, 0, 0, 1.04355, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    22.916667% {
        transform: matrix3d(1.05078, 0, 0, 0, 0, 1.02012, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    25% {
        transform: matrix3d(1.04487, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    27.083333% {
        transform: matrix3d(1.03699, 0, 0, 0, 0, 0.98534, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    29.166667% {
        transform: matrix3d(1.02831, 0, 0, 0, 0, 0.97688, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    31.25% {
        transform: matrix3d(1.01973, 0, 0, 0, 0, 0.97422, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    33.333333% {
        transform: matrix3d(1.01191, 0, 0, 0, 0, 0.97618, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    35.416667% {
        transform: matrix3d(1.00526, 0, 0, 0, 0, 0.98122, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    37.5% {
        transform: matrix3d(1, 0, 0, 0, 0, 0.98773, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    39.583333% {
        transform: matrix3d(0.99617, 0, 0, 0, 0, 0.99433, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    41.666667% {
        transform: matrix3d(0.99368, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    43.75% {
        transform: matrix3d(0.99237, 0, 0, 0, 0, 1.00413, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    45.833333% {
        transform: matrix3d(0.99202, 0, 0, 0, 0, 1.00651, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    47.916667% {
        transform: matrix3d(0.99241, 0, 0, 0, 0, 1.00726, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    50% {
        transform: matrix3d(0.99329, 0, 0, 0, 0, 1.00671, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
        box-shadow: 0px 10px 20px 5px rgba(0,0,0,.5);
    }
    52.083333% {
        transform: matrix3d(0.99447, 0, 0, 0, 0, 1.00529, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    54.166667% {
        transform: matrix3d(0.99577, 0, 0, 0, 0, 1.00346, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    56.25% {
        transform: matrix3d(0.99705, 0, 0, 0, 0, 1.0016, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    58.333333% {
        transform: matrix3d(0.99822, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    60.416667% {
        transform: matrix3d(0.99921, 0, 0, 0, 0, 0.99884, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    62.5% {
        transform: matrix3d(1, 0, 0, 0, 0, 0.99816, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    64.583333% {
        transform: matrix3d(1.00057, 0, 0, 0, 0, 0.99795, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    66.666667% {
        transform: matrix3d(1.00095, 0, 0, 0, 0, 0.99811, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    68.75% {
        transform: matrix3d(1.00114, 0, 0, 0, 0, 0.99851, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    70.833333% {
        transform: matrix3d(1.00119, 0, 0, 0, 0, 0.99903, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    72.916667% {
        transform: matrix3d(1.00114, 0, 0, 0, 0, 0.99955, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    75% {
        transform: matrix3d(1.001, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    77.083333% {
        transform: matrix3d(1.00083, 0, 0, 0, 0, 1.00033, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    79.166667% {
        transform: matrix3d(1.00063, 0, 0, 0, 0, 1.00052, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    81.25% {
        transform: matrix3d(1.00044, 0, 0, 0, 0, 1.00058, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    83.333333% {
        transform: matrix3d(1.00027, 0, 0, 0, 0, 1.00053, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    85.416667% {
        transform: matrix3d(1.00012, 0, 0, 0, 0, 1.00042, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    87.5% {
        transform: matrix3d(1, 0, 0, 0, 0, 1.00027, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    89.583333% {
        transform: matrix3d(0.99991, 0, 0, 0, 0, 1.00013, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    91.666667% {
        transform: matrix3d(0.99986, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    93.75% {
        transform: matrix3d(0.99983, 0, 0, 0, 0, 0.99991, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    95.833333% {
        transform: matrix3d(0.99982, 0, 0, 0, 0, 0.99985, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    97.916667% {
        transform: matrix3d(0.99983, 0, 0, 0, 0, 0.99984, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
    100% {
        transform: matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    }
}

.ripple {
  position: absolute;
  background: rgba(0,0,0,.15);
  border-radius: 100%;
  transform: scale(0);
  pointer-events: none;
  
  &.show {
    animation: ripple .75s ease-out;
  }
}

@keyframes ripple {
  to {
    transform: scale(2);
    opacity: 0;
  }
}