HTML5 Canvas Tween Finish Event Tutorial

To trigger a user defined function when the tween finishes with Konva, we can set the onFinish property.

Konva Tween Finish Event Demoview raw
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.rawgit.com/konvajs/konva/1.6.3/konva.min.js"></script>
<meta charset="utf-8">
<title>Konva Finish Event Demo</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background-color: #F0F0F0;
}
</style>
</head>
<body>
<div id="container"></div>
<script>
function writeMessage(message) {
text.setText(message);
layer.draw();
}
var width = window.innerWidth;
var height = window.innerHeight;
var stage = new Konva.Stage({
container: 'container',
width: width,
height: height
});
var layer = new Konva.Layer();
var text = new Konva.Text({
x: 10,
y: 10,
fontFamily: 'Calibri',
fontSize: 24,
text: '',
fill: 'black'
});
var wheel = new Konva.Star({
x: stage.getWidth() / 2,
y: stage.getHeight() / 2,
numPoints: 8,
outerRadius: 70,
innerRadius: 50,
fill: 'purple',
stroke: 'black',
strokeWidth: 5,
lineJoin: 'bevel'
});
layer.add(wheel);
layer.add(text);
stage.add(layer);
// the tween has to be created after the node has been added to the layer
var tween = new Konva.Tween({
node: wheel,
duration: 4,
rotation: 360,
easing: Konva.Easings.BackEaseOut,
onFinish: function() {
writeMessage('tween finished!');
}
});
setTimeout(function() {
tween.play();
}, 1000);
</script>
</body>
</html>