<script>
let m = { x: 0, y: 0 };
function handleMousemove(event) {
m.x = event.clientX;
m.y = event.clientY;
}
</script>
<div on:mousemove={handleMousemove}>
The mouse position is {m.x} x {m.y}
</div>
<style>
div { width: 100%; height: 100%; }
</style>
