choreographer-js is a powerful JavaScript library designed for creating complex animations with ease. Whether you’re a beginner or an experienced developer, choreographer-js offers dozens of useful APIs to help you bring your animations to life. In this article, we’ll explore some of these APIs through examples and build a simple application at the end.
Getting Started with choreographer-js
To start using choreographer-js, include it in your HTML file:
<script src="https://cdn.jsdelivr.net/npm/choreographer-js@0.3.2/dist/choreographer.min.js"></script>
Then, you can create an instance of Choreographer:
const choreographer = new Choreographer({
animations: [
{
range: [0, 300],
selector: '#myElement',
type: 'scale',
style: 'opacity',
from: 0,
to: 1
}
]
});
API Examples
Animation Examples
Opacity Animation
const opacityAnimation = new Choreographer({
animations: [
{
range: [0, 100],
selector: '.fade-in',
type: 'scale',
style: 'opacity',
from: 0,
to: 1
}
]
});
Color Animation
const colorAnimation = new Choreographer({
animations: [
{
range: [0, 200],
selector: '#color-change',
type: 'style',
style: 'background-color',
from: '#fff',
to: '#000'
}
]
});
Transform Animation
const transformAnimation = new Choreographer({
animations: [
{
range: [0, 300],
selector: '#move',
type: 'scale',
style: 'transform',
from: 'translateX(0px)',
to: 'translateX(100px)'
}
]
});
Playback Controls
// Start animation choreographer.play(); // Pause animation choreographer.pause(); // Stop animation choreographer.stop(); // Seek to a specific point choreographer.seek(150);
Event Listeners
choreographer.on('play', function() {
console.log('Animation started');
});
choreographer.on('pause', function() {
console.log('Animation paused');
});
choreographer.on('stop', function() {
console.log('Animation stopped');
});
Application Example
Let’s build a simple app using the provided APIs.
<html>
<head>
<title>Choreographer Example</title>
<script src="https://cdn.jsdelivr.net/npm/choreographer-js@0.3.2/dist/choreographer.min.js"></script>
</head>
<body>
<div id="box" style="width:100px; height:100px; background:blue;"></div>
<script>
const myAnimation = new Choreographer({
animations: [
{
range: [0, 200],
selector: '#box',
type: 'scale',
style: 'transform',
from: 'translateX(0px)',
to: 'translateX(200px)'
},
{
range: [0, 200],
selector: '#box',
type: 'scale',
style: 'background',
from: 'blue',
to: 'red'
}
]
});
myAnimation.play();
</script>
</body>
</html>
In this example, we animate a box element’s position and background color. You can see how easy it is to create complex animations using choreographer-js!
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