javascript 保持滚动条位置

以下为经验证过的写法,确实没有问题.

<script language="javascript">
function GetCookie (name)
{
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen)
  {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
    {
      return getCookieVal (j);
    }
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0)
    {
      break;
    }
  }
  return null;
}

function getCookieVal (offset)
{
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
  endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}

function SetCookie (name, value)
{
  document.cookie = name + "=" + escape (value);
}
</script>
</HEAD>

<body bgColor="#f1f5f5" leftMargin="0" topMargin="0" rightMargin="0" MS_POSITIONING="FlowLayout" onload="document.body.scrollTop=GetCookie('posy')" onunload="SetCookie('posy',document.body.scrollTop)">
posted on 2007-05-20 16:42  西湖浪子  阅读(586)  评论(2)    收藏  举报