JavaScript判断浏览器及其版本信息

functiongetBrowserInfo(){

 varInfo = {};

 varstr = window.navigator.userAgent.toLowerCase();

 varbReg =/(msie|firefox|chrome|opera|version).*?([\d.]+)/;

 varinfoArr = str.match(bReg);

 Info.browser = infoArr[1].replace(/version/,"safari");

 Info.ver = infoArr[2];

 returnInfo;

}

varBomInfo = getBrowserInfo();

document.write(BomInfo.browser);

document.write("");

document.write(BomInfo.ver);