JS获取当前手机浏览器可视区域大小

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"+"
";   

      alert (s);

    }

    getInfo();