<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <style type="text/css"> img { position:fixed; } </style> <script type="text/javascript"> var picture; window.onload=function() { picture = document.getElementById("picture1"); window.onmousemove = onMove; } function onMove(event) { var x = event.clientX; var y = event.clientY; picture.style.top = y + "px"; picture.style.left = x + "px"; } </script> </head> <body> <img src="Img/1330721580922.gif" id="picture1" /> </body> </html>
里面主要用到的样式是position:fixed;和事件参数对象
浏览器在调用事件方法时，会创建一个事件参数对象，并将其传入到事件方法中
例如：
