<!DOCTYPE html>
<html>
<head>
<style type="text/css">
div#box1
{
background-color : Gray;
height:200px;
width : 200px;
}
</style>
<script type ="text/javascript">
function fadeout(ele) {
var elem = document.getElementById(ele);
elem.style.transition = "opacity 1.0s linear 0s";
elem.style.opacity = 0;
}
function fadein(ele) {
var elem = document.getElementById(ele);
elem.style.transition = "opacity 1.0s linear 0s";
elem.style.opacity = 1;
}
</script>
<title>Change Background color</title>
</head>
<body>
<button onclick="fadeout('box1');"> fadeout</button>
<button onclick="fadein('box1');"> fadein</button>
<div id="box1">Paste your content here</div>
</body>
</html>
<html>
<head>
<style type="text/css">
div#box1
{
background-color : Gray;
height:200px;
width : 200px;
}
</style>
<script type ="text/javascript">
function fadeout(ele) {
var elem = document.getElementById(ele);
elem.style.transition = "opacity 1.0s linear 0s";
elem.style.opacity = 0;
}
function fadein(ele) {
var elem = document.getElementById(ele);
elem.style.transition = "opacity 1.0s linear 0s";
elem.style.opacity = 1;
}
</script>
<title>Change Background color</title>
</head>
<body>
<button onclick="fadeout('box1');"> fadeout</button>
<button onclick="fadein('box1');"> fadein</button>
<div id="box1">Paste your content here</div>
</body>
</html>
Code generate the following output
