top、clientTop、scrollTop、offsetTop

top、clientTop、scrollTop、offsetTop 　　 图示说明如下：   51windows.Net var s = "";s += "\r\n网页可见区域宽："+ document.body.clientWidth;s += "\r\n网页可见区域高："+ document.body.clientHeight;s += "\r\n网页可见区域宽："+ document.body.offsetWidth +" (包括边线的宽)";s += "\r\n网页可见...