IE浏览器的判断

function compatibleIE8(){
var browser = navigator.appName;
var b_version = navigator.appVersion;
if(browser == "Microsoft Internet Explorer"){
var version = b_version.split(";")[1].replace(/[ ]/g,"");
if(version == "MSIE8.0"){
　　.........
}
}
}

 

 

2.

function isIE() { //ie?
    if (!!window.ActiveXObject || "ActiveXObject" in window)
        return true;
    else
        return false;
}