通过window.navigator来判断：
rush:js;">
function getbrowserInfo(){
var Info = {};
var str = window.navigator.userAgent.toLowerCase();
var bReg =/(msie|firefox|chrome|opera|version).*?([\d.]+)/;
var infoArr = str.match(bReg);
Info.browser = infoArr[1].replace(/version/,"safari");
Info.ver = infoArr[2];
return Info;
}
var BomInfo = getbrowserInfo();
document.write(BomInfo.browser);
document.write("");
document.write(BomInfo.ver);
