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Thumb Javascript HTML5 Custom Fade Animation Functions Programming Tutorial
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Publish Date - Jun 28, 2012     Author - Adam Khoury
Javascript HTML5 Custom Fade Animation Functions Programming Tutorial
Learn to program lightweight raw Javascript functions to Fade In and Fade Out HTML elements. Programming your own functions instead of relying on Frameworks all the time empowers the student. In the lesson we also demonstrate how to externalize the function set to make it re-usable and modular in a simple way.
Lesson Code
// This code is for the external file named fadeEffects.js
// Script and lesson by Adam Khoury @
var fade_in_from = 0;
var fade_out_from = 10;
function fadeIn(element){
var target = document.getElementById(element); = "block";
var newSetting = fade_in_from / 10; = newSetting;
// opacity ranges from 0 to 1
if(fade_in_from == 10){ = 1;
fade_in_from = 0;
return false;
var loopTimer = setTimeout('fadeIn(\''+element+'\')',50);
function fadeOut(element){
var target = document.getElementById(element);
var newSetting = fade_out_from / 10; = newSetting;
if(fade_out_from == 0){ = 0; = "none";
fade_out_from = 10;
return false;
var loopTimer = setTimeout('fadeOut(\''+element+'\')',50);

<!-- This is the HTML file that needs fadeEffects.js -->

<!DOCTYPE html>
<meta charset="UTF-8">
<title>My Web Page</title>
<style type="text/css">
div.contentbox {
<script type="text/javascript" src="fadeEffects.js"></script>
<h2>Fade In and Out Without Frameworks</h2>
<button onclick="fadeOut('div1')">Fade Out</button>
<button onclick="fadeIn('div1')">Fade In</button>
<div id="div1" class="contentbox">Content Box</div>
<p>Content that lives under my box</p>
<button onclick="fadeOut('div2')">Fade Out</button>
<button onclick="fadeIn('div2')">Fade In</button>
<div id="div2" class="contentbox">Content Box</div>
<p>Content that lives under my box</p>
<button onclick="fadeOut('div3')">Fade Out</button>
<button onclick="fadeIn('div3')">Fade In</button>
<div id="div3" class="contentbox">Content Box</div>
<p>Content that lives under my box</p>

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CSS Level 3 Properties is a growing educational system packed with video and written material that you can access 24/7 100% free. The focus here in 2014 is spread between five technologies: HTML, CSS, JavaScript, PHP and MySQL. Learn programming theory, database interaction, web design, animation, graphics editing, vector art, 3D modeling, and much more. The educational experience here is a hybrid one offering both high quality video tutorials and code libraries that grow more robust every day. The code libraries are being assembled so that developers can discover all of the building blocks of their favorite languages. The libraries coupled with high quality video tutorials will take you deep down the rabbit hole very quickly. You can also ask questions and get free advice at