As we’ve briefly seen already, you can listen to any DOM event on an element (such as click or pointermove) with an on<name>
function:
App
<div onpointermove={onpointermove}>
The pointer is at {Math.round(m.x)} x {Math.round(m.y)}
</div>
Like with any other property where the name matches the value, we can use the short form:
App
<div {onpointermove}>
The pointer is at {Math.round(m.x)} x {Math.round(m.y)}
</div>
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<script>
let m = $state({ x: 0, y: 0 });
function onpointermove(event) {
m.x = event.clientX;
m.y = event.clientY;
}
</script>
<div>
The pointer is at {Math.round(m.x)} x {Math.round(m.y)}
</div>
<style>
div {
position: fixed;
left: 0;
top: 0;
width: 100%;
height: 100%;
padding: 1rem;
}
</style>