跨浏览器获取参数

获取窗口位置:

var leftPos = (typeof window.screenLeft == "number") ? window.screenLeft : window.screenX

var topPos = (typeof window.screenTop == "number") ? window.screenTop: window.screenY

获得页面视口大小:

var pageWidth = window.innerWidth
var pageHeight = window.innerHeight
if(typeof pageWidth != "number") {
  if (document.compatMod == "CSS1Compat") {
    pageWidth = document.documentElement.clientWidth
    pageHeight = document.documentElement.clientHeight
  } else {
    pageWidth = document.body.clientWidth
    pageHeight = document.body.clientHeight
  }
}

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转载自www.cnblogs.com/hanxiaoer/p/11514652.html