jQuery addClass example

Change class name on click in jQuery

by sazakharov

HTML

<div id="banner-message">
  <p>
    <button class="s6035" data-col="10">3</button>
    <button class="s6035" data-col="12">2</button>
    <button class="s6035" data-col="14">1</button>
  </p>
  <button class="plus">+</button>
  <button class="minus">-</button>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#banner-message {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  font-size: 25px;
  text-align: center;
  transition: all 0.2s;
  margin: 0 auto;
  width: 300px;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 3px;
  padding: 4px 8px;
  font-size: 15px;
  color: #fff;
}

#banner-message.alt {
  background: #0084ff;
  color: #fff;
  margin-top: 40px;
  width: 200px;
}

#banner-message.alt button {
  background: #fff;
  color: #000;
}

JavaScript

$(".plus").on("click", function(){
  $.each($(".s6035"), function(index, element){
    $(element).text(parseInt($(element).text()) + parseInt($(element).data("col")))
  })
})

$(".minus").on("click", function(){
  $.each($(".s6035"), function(index, element){
    $(element).text(parseInt($(element).text()) - parseInt($(element).data("col")))
  })
})