JS 获取浏览器窗口大小

 <script>

function getInfo() {
// var s = "";
// s = " 网页可见区域宽：" document.body.clientWidth;
// s = " 网页可见区域高："+ document.body.clientHeight;
// s = " 网页可见区域宽：" document.body.offsetWidth " (包括边线和滚动条的宽)";
// s = " 网页可见区域高：" document.body.offsetHeight " (包括边线的宽)";
// s = " 网页正文全文宽：" document.body.scrollWidth;
// s = " 网页正文全文高：" +document.body.scrollHeight;
// s = " 网页被卷去的高(ff)：" document.body.scrollTop;
// s = " 网页被卷去的高(ie)：" document.documentElement.scrollTop;
// s = " 网页被卷去的左：" document.body.scrollLeft;
// s = " 网页正文部分上：" window.screenTop;
// s = " 网页正文部分左：" window.screenLeft;
// s = " 屏幕分辨率的高：" +window.screen.height;
// s = " 屏幕分辨率的宽：" window.screen.width;
// s = " 屏幕可用工作区高度：" +window.screen.availHeight;
// s = " 屏幕可用工作区宽度：" window.screen.availWidth;
// s = " 你的屏幕设置是 " window.screen.colorDepth " 位彩色";
// s = " 你的屏幕设置 " window.screen.deviceXDPI " 像素/英寸";
if (window.innerWidth)

winWidth= window.innerWidth;

else if ((document.body)&& (document.body.clientWidth))

winWidth= document.body.clientWidth;

//获取窗口高度

if (window.innerHeight)

winHeight= window.innerHeight;

else if ((document.body)&& (document.body.clientHeight))

winHeight= document.body.clientHeight;

//通过深入 Document 内部对 body 进行检测，获取窗口大小

if (document.documentElement&& document.documentElement.clientHeight && document.documentElement.clientWidth)
{

winHeight= document.documentElement.clientHeight;

winWidth= document.documentElement.clientWidth;

}

alert (winHeight);
 }

getInfo();
</script>