CSS animation-direction Property
CSS animation-direction Property
CSS animation-direction property defines whether an animation should play forwards, backwards, or alternating back and forth.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
div{
width: 100px;
height: 100px;
border: 1px solid #000;
line-height: 6;
text-align: center;
animation: myAnimation 1s infinite;
-webkit-animation: myAnimation 1s infinite; /* Safari 4.0 - 8.0 */
animation-direction: alternate;
-webkit-animation-direction: alternate; /* Safari 4.0 - 8.0 */
}
@-webkit-keyframes myAnimation {
from {border-radius: 0%;}
to {border-radius: 50%;}
}
@keyframes myAnimation {
from {border-radius: 0%;}
to {border-radius: 50%;}
}
</style>
</head>
<body>
<h1>CSS animation-direction Property</h1>
<div>
Div
</div>
</body>
</html>
Syntax
Using CSS
element{
animation-direction: alternate;
}
Using Javascript
object.style.animationDirection="alternate";
Animatable
No, animation-direction property is not animatable. CSS Animatable Properties Reference.
Default Value
Default value for CSS animation-direction property is normal.
Property Value
The following table provides a list of values for CSS animation-direction property.
| Value | Explanation |
|---|
| normal | Specifies that the animation plays forwards each cycle. |
| reverse | Specifies that the animation plays backwards each cycle. |
| alternate | Specifies that the animation reverses direction each cycle, with the first iteration being played forwards. |
| alternate-reverse | Specifies that the animation reverses direction each cycle, with the first iteration being played backwards. |
Using JavaScript
In the following example, we will demonstrate how to change the CSS animation-direction property of an element using JavaScript.
Example
<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
div{
width: 100px;
height: 100px;
border: 1px solid #000;
line-height: 6;
text-align: center;
margin-bottom: 20px;
}
@-webkit-keyframes myAnimation {
from {border-radius: 0%;}
to {border-radius: 50%;}
}
@keyframes myAnimation {
from {border-radius: 0%;}
to {border-radius: 50%;}
}
</style>
</head>
<body>
<h1>CSS animation-direction Property</h1>
<div>
Div
</div>
<button onclick="myFunction()">Click Me</button>
<script>
var x = document.getElementsByTagName("div")[0];
function myFunction(){
x.style.animation = "myAnimation 1s infinite";
x.style.WebkitAnimation = "myAnimation 1s infinite";
x.style.animationDirection = "alternate";
x.style.WebkitAnimationDirection = "alternate";
}
</script>
</body>
</html>
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