页面导航：首页 → 网络编程 → JavaScript → 基础知识 → 正文内容

Code：findPosX 和 findPosY

发布：dxy 发布日期：2006-12-20 字体：[增加减小] 类型：转载

/**
* Find the X position of an object, relative to the viewport
* Code copied from quirksmode.org
* @param obj Object to find x position for
*/
function findPosX(obj)
{
  var curleft = 0;
  if (obj.offsetParent)
  {
    while (obj.offsetParent)
    {
      curleft += obj.offsetLeft
      obj = obj.offsetParent;
    }
  }
  else if (obj.x)
    curleft += obj.x;
  return curleft;
}
/**
* Find the Y position of an object, relative to the viewport
* Code copied from quirksmode.org
* @param obj Object to find y position for
*/
function findPosY(obj)
{
  var curtop = 0;
  if (obj.offsetParent)
  {
    while (obj.offsetParent)
    {
      curtop += obj.offsetTop
      obj = obj.offsetParent;
    }
  }
  else if (obj.y)
    curtop += obj.y;
  return curtop;
}