​x
 
<!DOCTYPE html>
<html>
<head>
<style>
div {
  width: 200px;
  height: 100px;
  border: 1px solid black;
}
</style>
</head>
<body>
​
<div onmousemove="showCoords(event)" onmouseout="clearCoor()"></div>
​
<p>将鼠标悬停在上面的矩形上，可获取鼠标指针的水平和垂直坐标。</p>
​
<p id="demo"></p>
​
<script>
function showCoords(event) {
  var x = event.clientX;
  var y = event.clientY;
  var coor = "X coords: " + x + ", Y coords: " + y;
  document.getElementById("demo").innerHTML = coor;
}
​
function clearCoor() {
  document.getElementById("demo").innerHTML = "";
}
</script>
​
</body>
</html>
​