html代码：<div id="time"></div>
jQuery代码
<script type="text/javascript">
setInterval(function() {
var now = (new Date()).toLocaleString();
$('#time').text(now);
}, 1000);
</script><html>
<head>
<title>随鼠标一起动的动画特效简单实现</title>
</head>
<body>
<script type="text/javascript" color="0,0,255" opacity='0.7' zIndex="-2" count="99" src="https://cdn.bootcss.com/canvas-nest.js/1.0.1/canvas-nest.min.js"></script>
</body>
</html>