var divwidth=0;
var divheight=0;
if(document.documentElement.clientWidth>0)//////////这句怎么理解?
{
divwidth = document.documentElement.clientWidth;
divheight = document.documentElement.clientHeight;
}
else //////////这句又怎么理解?为何要分两种情况?
{
divwidth = document.body.offsetWidth;
divheight = document.body.offsetHeight;
}
$("frameClientInfo").style.width= divwidth-25;
$("frameClientInfo").style.height= divheight-60>250?divheight-60:250;
}
var divheight=0;
if(document.documentElement.clientWidth>0)//////////这句怎么理解?
{
divwidth = document.documentElement.clientWidth;
divheight = document.documentElement.clientHeight;
}
else //////////这句又怎么理解?为何要分两种情况?
{
divwidth = document.body.offsetWidth;
divheight = document.body.offsetHeight;
}
$("frameClientInfo").style.width= divwidth-25;
$("frameClientInfo").style.height= divheight-60>250?divheight-60:250;
}
divwidth = document.body.offsetWidth;
divwidth = document.documentElement.clientWidth; 都是给 divwidth 赋值 body的 宽度
因为引没引用w3c文档节点不一样
所以 引用了w3c是document.documentElement没引用是document.body