<div>1</div>
<button>reset</button>

@import url(https://fonts.googleapis.com/css?family=Noto+Sans:400,700);

div,
button {
  position: absolute;
  font: normal normal normal 14px/28px "Noto Sans", sans-serif;
}

div {
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  width: 28px;
  height: 28px;
  text-align: center;
  background: #52D96A;
  border-radius: 100%;
  color: white;
  transition: background .4s ease;
  -moz-user-select: none;
  -webkit-user-select: none;
  user-select: none;
}

div:hover {
  cursor: pointer;
  background: #49c35f;
}

button {
  left: calc(50% - 32px);
  bottom: 50px;
  border: 0;
  border-radius: 4px;
  padding: 1px 14px;
  color: #52D96A;
  background: transparent;
  border: 2px solid transparent;
  transition: border .2s ease;
}

button:hover {
  border: 2px solid #52D96A;
  cursor: pointer;
}

button:focus {
  outline: none
}

.animate {
  animation: scaleup 0.4s 1;
}

@-webkit-keyframes scaleup {
  0%,
  100% {
    width: 28px;
    height: 28px;
    line-height: 28px;
  }
  50% {
    width: 38px;
    height: 38px;
    line-height: 38px;
  }
}

@keyframes scaleup {
  0%,
  100% {
    width: 28px;
    height: 28px;
    line-height: 28px;
  }
  50% {
    width: 38px;
    height: 38px;
    line-height: 38px;
  }
}

var valuediv = parseInt($("div").text());

$("div").click(function() {
  $("div").text(++valuediv);
  console.log(valuediv);
  $("div").addClass("animate");
  $("div")[0].addEventListener("animationend", function() {
    $("div").removeClass("animate");
  }, false);
});

$("button").click(function() {
  valuediv = 1;
  $("div").text(valuediv);
});