代码如下：
<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<title>显示鼠标单击位置</title>
<style>
.mouse{position:fixed;background:#ffd965;width:40px;height:40px;border-radius:20px;display:none;}
</style>
<script>
window.onload = function(){
var mouse = document.getElementById('mouse');
//需求：鼠标在页面上单击时，获取单击时的位置，并显示一个小圆点
document.onclick = function() {
mouse.style.display = 'block';
// 获取事件对象的兼容处理
var targetX = event.clientX - mouse.offsetWidth / 2;
var targetY = event.clientY - mouse.offsetHeight / 2;
// 在鼠标单击的位置显示<div>
mouse.style.left = targetX + 'px';
mouse.style.top = targetY + 'px';
};
}
</script>
</head>
<body>
<div id="mouse" class="mouse"></div>
</body>
</html>
