<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
div {
width: 200px;
height: 200px;
background-color: pink;
margin: 200px;
}
</style>
<body>
<div class="box"></div>
<script>
var box = document.querySelector('.box');
box.addEventListener('mousemove', function (e) {
var x = e.pageX - this.offsetLeft;
var y = e.pageY - this.offsetTop;
this.innerHTML = 'x坐标是' + x + 'y坐标是' + y;
})
</script>
</body>
</html>