jQuery addClass example

Change class name on click in jQuery

by WILLIAM CORREA

HTML

<select id="mySelect">
  <option value="1">value1</option>
  <option value="2">value2</option>
</select>
<div id="inputOculto">
  <input type="text" />
</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: 5px;
  padding: 8px 14px;
  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

$(document).ready(function() {
	var updateForm = function() {
    if ($('#mySelect').val() == '2') {
      $('#inputOculto').show();
      return
    }
    $('#inputOculto').hide();
  }

  $('#inputOculto').hide();
  $('#mySelect').change(updateForm);

  updateForm()
});