Simply Appear

Code - 07-01-2017


Simply Appear is an extremely lightweight native Javascript and CSS framework to animate objects appearing on web pages.

It is easy to integrate and comes with 8 basic animations styles (see examples below).

Get in on GitHub:


  • Lightweight and lightning fast: less than 2 KB (CSS+JS)
  • Native JS (no jQuery required!)
  • Compatible with IE9+ (although animations are supported IE10+)
  • Uses CSS transitions (less messy than JS animations that override the "style" tag)
  • Page still works with JS disabled (without animations)
  • Comes with the basic animations: fade-in, slide-up, slide-down, slide-left, slide-right, zoom-in. Easy to add more!


Using this library is easy:

  1. Download/clone the lib from Github and put it somewhere your website's directory
  2. In your <head>, add <link rel="stylesheet" href="/simply_appear/sappear.min.css" type="text/css">
  3. Before the closing tag of your <body>, add <script src="/simply_appear/sappear.min.js"></script>
  4. Give the containing body the overflow-x: hidden; CSS property or wrap all of your content in <div id="bodywrapper"></div> or
  5. Add animations to your elements! To do so, add the following classes SAppear ANIMATION-NAME. The available animations are :
    • SA-fade-in
    • SA-slide-up
    • SA-slide-down
    • SA-slide-left
    • SA-slide-right
    • SA-zoom-in
    • SA-roll-left
    • SA-roll-right
    • ... Your own animations!

In a single example:

<!DOCTYPE html>
    <link rel="stylesheet" href="/simply_appear/sappear.min.css" type="text/css">
  <body style="overflow-x: hidden;">
    <!-- Page content... -->
    <p class="alert alert-info SAppear SA-fade-in">This "p" will be animated with a fade in effect.</p>
    <!-- More page content... -->
    <script src="/simply_appear/sappear.min.js"></script>

That's it!


<div class="SAppear SA-fade-in"></div>
<div class="SAppear SA-slide-up"></div>
<div class="SAppear SA-slide-left"></div>
<div class="SAppear SA-slide-down"></div>
<div class="SAppear SA-slide-right"></div>
<div class="SAppear SA-zoom-in"></div>
<div class="SAppear SA-roll-left"></div>
<div class="SAppear SA-roll-right"></div>

Adding custom animations

Should you want more options, adding your own animations is very easy. For instance, add this to the CSS code:

  /* You can choose the animation length. If you do
   not put this line, it will default to 500ms.*/
  -webkit-transition: 1s;
  transition: 1s;
  /* The state of the element before the appear. It 
  transitions to its default state when appearing.*/
  -webkit-transform: rotate(90deg) scale(0);
          transform: rotate(90deg) scale(0);

This code makes the element appear with a spinning and zooming effect of 1 second.

A good source of inspiration is the Animate.css framework.

Known limitations

Due to some performance optimisation, any element added to the DOM after the lib is initiated (through Ajax calls for instance) will not be animated. The solution is to run the SAinit() function after loading the any new content.


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