jQuery addClass example

Change class name on click in jQuery

HTML

<div id="banner-message">
  <p>Hello World</p>
  <button>Test regEx</button>
  <p id="demo"></p>
</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")

function myFunction() {

  const regEx = /\[~(\d|-|[a-f]){32,36}\]/;

  var str = "How [~75e0a072-6464-4e00-8229-a3b6b799a673] to [~457713c4-a752-4eed-b835-28f7ef74b682] also [~57713c4-a752-4eed-b835-28f7ef74b682] you?";
  var res = str.split(regEx);
  document.getElementById("demo").innerHTML = res;
}

// handle click and add class
button.on("click", myFunction)

document.getElementById("demo").innerHTML = res;