The animationFillMode property is used to specify how styles are applied outside the execution time i.e. after it has finished or if a delay has been specified. This is helpful in setting css animation style to an element before the animation has started and after it has ended.
Syntax
Following is the syntax for −
Setting the animationFillMode property −
object.style.animationFillMode = "none|forwards|backwards|both|initial|inherit"
Values
Following are the values −
| Value | Description |
|---|---|
| none | This makes that the animation will not apply any styles to the target element before start or after the animation has ended.It is the default value. |
| forwards | It applies the last key-frame style to the target element after the animation has been ended. |
| backwards | It applies the first key-frame style to the target element after the animation has been ended. |
| both | It applies both the forwards and backwards rule to the animation |
| Initial | For setting this property to initial value |
| nherit | Inherits this property from its parent element. |
Example
Let us look at the example for the animationFillMode property −
<!DOCTYPE html>
<html>
<head>
<style>
div {
height: 30px;
width: 30px;
background-color: orange;
animation: small 4s;
animation-fill-mode: forwards;
}
@keyframes small {
0% {
width: 200px;
height: 200px;
background-color: white;
}
33% {
background-color: green;
}
66% {
background-color: violet;
}
100% {
background-color: darkred;
}
}
</style>
<script>
function changeFillMode(){
document.getElementById("DIV1").style.animationFillMode="backwards";
document.getElementById("Sample").innerHTML="The animation fillmode is now backwards";
}
</script>
</head>
<body>
<div id="DIV1"></div>
<p>Click the below button to change the above animation fillmode property</p>
<button onclick="changeFillMode()">CHANGE FILL</button>
<p id="Sample"></p>
</body>
</html>Output
This will produce the following output −
When the animation ends the square color is dark red as it is the last keyframe −
On clicking the CHANGE FILL the color changes to orange which is our first keyframe −
Note − This property isn’t supported in IE/EDGE and Safari browser.