jQuery addClass example

Change class name on click in jQuery

by warrenkc

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>
<div id="banner-message">
  <p id="message">Hello World</p>
  <button>convert time new new format</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: 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

// find elements
var banner = $("#banner-message");
var button = $("button");
var to = "1025.1";

// handle click and add class
button.on("click", function() {
  //banner.addClass("alt")
  //var to = moment("1025.1");
  //$("#message").text(to.format('h:mm:ss'));
  $("#message").text(formatSeconds(to));
})

function formatSeconds(totalSeconds) {
  var hours = Math.floor(totalSeconds / 3600);
  totalSeconds %= 3600;
  var minutes = Math.floor(totalSeconds / 60);
  var seconds = Math.floor(totalSeconds) % 60;
  var milliseconds = Math.floor(totalSeconds * 1000) % 1000;

  return pad(hours) + ':' + pad(minutes) + ':' + pad(seconds) + ',' + pad(milliseconds);
}

function pad(n) {
  return (n < 10) ? ("0" + n) : n;
}