jQuery addClass example

Change class name on click in jQuery

HTML

<div id="banner-message">
  <p>Elakiri.com</p>
  <button>Scroll Fix</button>
  <p>Scroll me down</p>
</div>

CSS

body {
  background: #20262E;
  font-family: Helvetica;
  padding: 0px;
}

#banner-message {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  font-size: 25px;
  text-align: center;
  transition: all 0.2s;
  margin: 0 auto;
  width: 300px;
  height: 1500px;
}

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

$(window).scroll(function() {
		let docHeight = $('body').height();
	    if( $(window).scrollTop() + $(window).height() > docHeight) {
	       alert('Run the function here , meka trigger karai page end eka')
	     }

	});