Javascript获取各种浏览器可见窗口大小
总算弄明白了为何用document.body.clientHeight,document.body.offsetHeight都没有办法获取网页可 见区域的正确值,原来罪魁祸首是W3C定义的标准!!在新定义出来的标准下 document.documentElement.clientHeight在IE和火狐里都能获取正确值,下面一篇文章详细介绍了获取各种浏览器可见 窗口大小这方面的差别:
<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"; //alert (s); } getInfo(); </script>
在我本地测试当中:
在IE、FireFox、Opera下都可以使用
document.body.clientWidth
document.body.clientHeight
即可获得,很简单,很方便。
而在公司项目当中:
Opera仍然使用
document.body.clientWidth
document.body.clientHeight
可是IE和FireFox则使用
document.documentElement.clientWidth
document.documentElement.clientHeight
原来是W3C的标准在作怪啊
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
如果在页面中添加这行标记的话
在IE中:
document.body.clientWidth ==> BODY对象宽度
document.body.clientHeight ==> BODY对象高度
document.documentElement.clientWidth ==> 可见区域宽度
document.documentElement.clientHeight ==> 可见区域高度
在FireFox中:
document.body.clientWidth ==> BODY对象宽度
document.body.clientHeight ==> BODY对象高度
document.documentElement.clientWidth ==> 可见区域宽度
document.documentElement.clientHeight ==> 可见区域高度
?
在Opera中:
document.body.clientWidth ==> 可见区域宽度
document.body.clientHeight ==> 可见区域高度
document.documentElement.clientWidth ==> 页面对象宽度(即BODY对象宽度加上Margin宽)
document.documentElement.clientHeight ==> 页面对象高度(即BODY对象高度加上Margin高)
而如果没有定义W3C的标准,则
IE为:
document.documentElement.clientWidth ==> 0
document.documentElement.clientHeight ==> 0
FireFox为:
document.documentElement.clientWidth ==>
页面对象宽度(即BODY对象宽度加上Margin宽)document.documentElement.clientHeight ==>
页面对象高度(即BODY对象高度加上Margin高)
Opera为:
document.documentElement.clientWidth ==>
页面对象宽度(即BODY对象宽度加上Margin宽)document.documentElement.clientHeight ==>
页面对象高度(即BODY对象高度加上Margin高)
原文地址:http://www.css88.com/article.asp?id=133
判断浏览器的类型: var ua = navigator.userAgent.toLowerCase (); var os = new Object(); os.isFirefox = ua.indexOf ("gecko") != -1; os.isOpera = ua.indexOf ("opera") != -1; os.isIE = !os.isOpera && ua.indexOf ("msie") != -1; 获取浏览器区域的大小:// // getPageScroll() // Returns array with x,y page scroll values. // Core code from - quirksmode.org // function getPageScroll(){ var yScroll; if (self.pageYOffset) { yScroll = self.pageYOffset; } else if (document.documentElement && document.documentElement.scrollTop){ // Explorer 6 Strict yScroll = document.documentElement.scrollTop; } else if (document.body) {// all other Explorers yScroll = document.body.scrollTop; } arrayPageScroll = new Array('',yScroll) return arrayPageScroll; } // // getPageSize() // Returns array with page width, height and window width, height // Core code from - quirksmode.org // Edit for Firefox by pHaez // function getPageSize(){ var xScroll, yScroll; if (windows.innerHeight && window.scrollMaxY) { xScroll = document.body.scrollWidth; yScroll = windows.innerHeight + window.scrollMaxY; } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac xScroll = document.body.scrollWidth; yScroll = document.body.scrollHeight; } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari xScroll = document.body.offsetWidth; yScroll = document.body.offsetHeight; } var windowWidth, windowHeight; if (self.innerHeight) { // all except Explorer windowWidth = self.innerWidth; windowHeight = self.innerHeight; } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode windowWidth = document.documentElement.clientWidth; windowHeight = document.documentElement.clientHeight; } else if (document.body) { // other Explorers windowWidth = document.body.clientWidth; windowHeight = document.body.clientHeight; } // for small pages with total height less then height of the viewport if(yScroll < windowHeight){ pageHeight = windowHeight; } else { pageHeight = yScroll; } // for small pages with total width less then width of the viewport if(xScroll < windowWidth){ pageWidth = windowWidth; } else { pageWidth = xScroll; } arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) return arrayPageSize; }