跟随鼠标的天使 <!DOCTYPE html> <html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>跟随鼠标的天使</title><style>img {position: absolute;top: 2px;}</style> </head><body><img src="https://pic.imgdb.cn/item/61247c9044eaada739c68e6b.gif" alt=""><script>var pic = document.querySelector('img');document.addEventListener('mousemove', function (e) {// 1. mousemove只要我们鼠标移动1px 就会触发这个事件// console.log(1);// 2.核心原理: 每次鼠标移动,我们都会获得最新的鼠标坐标, 把这个x和y坐标做为图片的top和left 值就可以移动图片var x = e.pageX;var y = e.pageY;console.log('x坐标是' + x, 'y坐标是' + y);//3 . 千万不要忘记给left 和top 添加px 单位pic.style.left = x - 50 + 'px'; //将箭头置于4图片中间pic.style.top = y - 40 + 'px';});</script> </body></html>