跟随鼠标的天使

图片放大镜用的就是这个思路
<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>小天使跟随鼠标</title>
    <style>
        img {
            position: absolute;
        }
    </style>
</head>
<body>
<img id="angel" src="image/angel.gif" alt="">
<script>
    var img = document.getElementById('angel');
    //onmousemove 每移动1px就会触发
    img.addEventListener('mousemove', function (e) {
        var x = e.pageX;
        var y = e.pageY;
        img.style.left = x -50 + 'px';
        img.style.top = y -40 + 'px';
        //-50 -40 是让鼠标到图片的中间
    })
</script>
</body>
</html>
用到的图片