Tag Archives: parallax

Parallax scrolling effect with HTML5, CSS and JavaScript

This tutorial explains how to add a parallax scrolling effect using some simple HTML5, CSS and JavaScript code. If you want to know more about the origins of the parallax effect, click here to see how Disney used the parallax effect in their early cartoon animation.

Click on the image below to see a working demo of the parallax effect created in this tutorial.

Parallax scrolling effect demo.
Parallax scrolling effect demo.

Watch the video below and then scroll down to see the sample code and sample image files you can use.

Sample code and images

Click on the image thumbnails below to download the sample background image and two parallax layer div background images.

background
background.png
parallax
parallax.png
parallax2
parallax2.png

All of the HTML, CSS and JavaScript code for this demo is included in one HTML file. You can copy the code from below – please note that I have included several of the same paragraphs in the code so that there is plenty of text content on the page to allow the user to scroll in order for the parallax effect to be visible.

<html>
<head>
  <title>Parallax effect</title>

  <style type="text/css">
    body{
      margin:0px;
      background:url(background.png) fixed;
    }
    #parallax_layer1{
      position:fixed;
      background:url(parallax.png) no-repeat 0px 300px;
      width:100%;
      height:800px;
    }
    #parallax_layer2{
      position:fixed;
      background:url(parallax2.png) no-repeat 0px 500px;
      width:100%;
      height:1000px;
    }
    #content_layer{
      color:#F9A7B0;
      background-color:black;
      opacity:0.5;
      font-family:Arial;
      position:absolute;
      padding:10px 10px 10px 30px;
      width:40%;
      right:0px;
    }
  </style>

  <script>
  // Create the parallax function.
  function parallax(){
    var parallax_layer1 = document.getElementById('parallax_layer1');
    var parallax_layer2 = document.getElementById('parallax_layer2');
    // Dividing the pageYOffset by a positive number will slow down the parallax effect.
    // Adding a '-' before (window.pageYOffset) makes the parallax
    // layer move up instead of down when scrolling.
    parallax_layer1.style.top = -(window.pageYOffset/2)+'px';
    parallax_layer2.style.top = -(window.pageYOffset/6)+'px';
  }
  // Add an event listener which will detect scrolling and run
  // the parallax function.
  window.addEventListener("scroll",parallax);

  </script>

</head>
<body>
  <div id="parallax_layer1"></div>
  <div id="parallax_layer2"></div>
  <div id="content_layer">
    <h1>Parallax effect</h1>
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  </div>	
</body>
</html>