Medium clap effect

index.html

<button id="clap" class="clap">
  <span>
    <!--  SVG Created by Luis Durazo from the Noun Project  -->
    <svg id="clap--icon" xmlns="http://www.w3.org/2000/svg" viewBox="-549 338 100.1 125">
  <path d="M-471.2 366.8c1.2 1.1 1.9 2.6 2.3 4.1.4-.3.8-.5 1.2-.7 1-1.9.7-4.3-1-5.9-2-1.9-5.2-1.9-7.2.1l-.2.2c1.8.1 3.6.9 4.9 2.2zm-28.8 14c.4.9.7 1.9.8 3.1l16.5-16.9c.6-.6 1.4-1.1 2.1-1.5 1-1.9.7-4.4-.9-6-2-1.9-5.2-1.9-7.2.1l-15.5 15.9c2.3 2.2 3.1 3 4.2 5.3zm-38.9 39.7c-.1-8.9 3.2-17.2 9.4-23.6l18.6-19c.7-2 .5-4.1-.1-5.3-.8-1.8-1.3-2.3-3.6-4.5l-20.9 21.4c-10.6 10.8-11.2 27.6-2.3 39.3-.6-2.6-1-5.4-1.1-8.3z"/>
  <path d="M-527.2 399.1l20.9-21.4c2.2 2.2 2.7 2.6 3.5 4.5.8 1.8 1 5.4-1.6 8l-11.8 12.2c-.5.5-.4 1.2 0 1.7.5.5 1.2.5 1.7 0l34-35c1.9-2 5.2-2.1 7.2-.1 2 1.9 2 5.2.1 7.2l-24.7 25.3c-.5.5-.4 1.2 0 1.7.5.5 1.2.5 1.7 0l28.5-29.3c2-2 5.2-2 7.1-.1 2 1.9 2 5.1.1 7.1l-28.5 29.3c-.5.5-.4 1.2 0 1.7.5.5 1.2.4 1.7 0l24.7-25.3c1.9-2 5.1-2.1 7.1-.1 2 1.9 2 5.2.1 7.2l-24.7 25.3c-.5.5-.4 1.2 0 1.7.5.5 1.2.5 1.7 0l14.6-15c2-2 5.2-2 7.2-.1 2 2 2.1 5.2.1 7.2l-27.6 28.4c-11.6 11.9-30.6 12.2-42.5.6-12-11.7-12.2-30.8-.6-42.7m18.1-48.4l-.7 4.9-2.2-4.4m7.6.9l-3.7 3.4 1.2-4.8m5.5 4.7l-4.8 1.6 3.1-3.9"/>
</svg>
  </span>
  <span id="clap--count" class="clap--count"></span>
  <span id="clap--count-total" class="clap--count-total"></span>
</button>

<aside id="message">In case you didn't know, you gotta click the clap button above 😎😜😜 
  <br />
  👉🏻 Press down the button for some more fun!
  <br />
  
  <a href="https://twitter.com/OhansEmmanuel" target="_blank">via @ohansemmanuel</a>
  <br/>
  <a href="https://codepen.io/ohansemmanuel/full/zEJpYy/" 
     target="_blank">
    See ReactJS implementation
  </a>  
</aside>

medium-clap-effect.markdown

Medium clap effect

The medium clap effect 👏 recreated with code. Yeah!

A Pen by Dan on CodePen.

License.

script.babel

const clap = document.getElementById('clap')
const clapIcon = document.getElementById('clap--icon')
const clapCount = document.getElementById('clap--count')
const clapTotalCount = document.getElementById('clap--count-total')
const initialNumberOfClaps = generateRandomNumber(500, 10000);
const btnDimension = 80
const tlDuration = 300
let numberOfClaps = 0
let clapHold;

const triangleBurst = new mojs.Burst({
  parent: clap,
  radius: {50:95},
  count: 5,
  angle: 30,
  children: {
    shape: 'polygon',
    radius: {6: 0},
    scale: 1,
    stroke: 'rgba(211,84,0 ,0.5)',
    strokeWidth: 2,
    angle: 210,
    delay: 30,
    speed: 0.2,
    easing: mojs.easing.bezier(0.1, 1, 0.3 ,1),
    duration: tlDuration
  } 
})
const circleBurst = new mojs.Burst({
  parent: clap,
  radius: {50:75},
  angle: 25,
  duration: tlDuration,
  children: {
    shape: 'circle',
    fill: 'rgba(149,165,166 ,0.5)',
    delay: 30,
    speed: 0.2,
    radius: {3: 0},
    easing: mojs.easing.bezier(0.1, 1, 0.3, 1),
  }
})
const countAnimation = new mojs.Html({
  el: '#clap--count',
  isShowStart: false,
  isShowEnd: true,
  y: {0: -30},
  opacity: {0:1},
  duration: tlDuration
}).then({
  opacity: {1:0},
  y: -80,
  delay: tlDuration/2
})
const countTotalAnimation = new mojs.Html({
  el: '#clap--count-total',
  isShowStart: false,
  isShowEnd: true,
  opacity: {0:1},
  delay: 3*(tlDuration)/2,
  duration: tlDuration,
  y: {0: -3}
})
const scaleButton = new mojs.Html({
  el: '#clap',
  duration: tlDuration,
  scale: {1.3: 1},
  easing: mojs.easing.out
})
clap.style.transform = "scale(1, 1)" /*Bug1 fix*/

const animationTimeline = new mojs.Timeline()
animationTimeline.add([
  triangleBurst,
  circleBurst,
  countAnimation,
  countTotalAnimation,
  scaleButton
])


clap.addEventListener('click', function() {
   repeatClapping();
})

clap.addEventListener('mousedown', function() {
   clapHold = setInterval(function() {
   repeatClapping();
   }, 400)
})

clap.addEventListener('mouseup', function() {
 clearInterval(clapHold);
})


function repeatClapping() {
 updateNumberOfClaps()
 animationTimeline.replay()
 clapIcon.classList.add('checked')
}

function updateNumberOfClaps() {
  numberOfClaps < 50 ? numberOfClaps++ : null
  clapCount.innerHTML = "+" + numberOfClaps
  clapTotalCount.innerHTML = initialNumberOfClaps + numberOfClaps
}

function generateRandomNumber(min, max) {
  return Math.floor(Math.random()*(max-min+1)+min);
}

/*====== TODO ==========
1. Bug fix. The button shouldn't 
scale up before being clicked (fixed)
2. Shadow should NOT fire hover 
animation in succession. 
Some sort of delay is delay. (Not that important)
3. Hover animation should be 
absent upon click (Not that important)
4. Handle onpress event on the button (Implemetaation is Buggy ATM)
5. Dynamically change burst angle 
everytime button is clicked 
=========================*/

scripts

<script src="https://cdnjs.cloudflare.com/ajax/libs/mo-js/0.288.1/mo.min.js"></script>

style.scss

/*========================
    SASS definitions
  =======================*/
$btn-dimension: 80px;
$primary-color: rgba(189,195,199 ,1);
$secondary-color: rgba(39,174,96 ,1);
@mixin debug {
  outline: 1px solid red;
}

/*========================
    FLEXBOX ALIGNMENT 
  =======================*/
body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

/*========================
    BASIC styles
  =======================*/
* {
  box-sizing: border-box
}

/*========================
    BUTTON styles
  =======================*/
.clap {
  position: relative;
  outline: 1px solid transparent;
  border-radius: 50%;
  border: 1px solid $primary-color;
  width: $btn-dimension;
  height: $btn-dimension; 
  background: none;
  &:after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    border-radius: 50%;
    //border: 1px solid $primary-color;
    width: $btn-dimension - 1px;
    height: $btn-dimension - 1px;
  }
  &:hover {
   cursor: pointer;
   border: 1px solid $secondary-color;
   transition: border-color 0.3s ease-in;
    &:after {
      animation: shockwave 1s ease-in infinite;
    } 
  }
  svg {
    width: 40px;
    fill: none;
    stroke: $secondary-color;
    stroke-width: 2px;
    &.checked {
      fill: $secondary-color;
      stroke: #fff;
      stroke-width: 1px;
    }
  }
  .clap--count {
    position: absolute;
    top: -$btn-dimension/1.6;
    left: $btn-dimension/4;
    font-size: 0.8rem;
    color: white;
    background: $secondary-color;
    border-radius: 50%;
    height: $btn-dimension/2;
    width: $btn-dimension/2;
    line-height: $btn-dimension/2;
  }
  .clap--count-total {
    position: absolute;
    font-size: 0.8rem;
    width: $btn-dimension;
    text-align: center;
    left: 0;
    top: -$btn-dimension/3.5;
    color: $primary-color; 
  }
}



/*====================
        Message
======================*/
#message {
  position: absolute;
  bottom: 20px;
  color: $secondary-color;
  line-height: 1.52rem;
  padding: 1rem;
  font-size: 0.9rem;
  a {
    color: $primary-color
  }
}



@keyframes shockwave {
  0% {
    transform: scale(1);
    box-shadow: 0 0 2px $secondary-color;
    opacity: 1;
  }

  100% {
    transform: scale(1);
    opacity: 0;
    box-shadow: 0 0 50px darken($secondary-color, 20%), inset 0 0 10px $secondary-color;
  }
}