Summary of methods for judging whether js is ie_javascript skills

The third type of personal test is available below

First type:

Copy code The code is as follows:

if(window.addEventListener ){
alert("not ie");
}else if(window.attachEvent){
alert("is ie");
}else{
alert("This kind of This happens in older browsers that do not support DHTML (now generally supported)")
}

Second type:

Copy code The code is as follows:

if(document.all ){
alert("IE6");
}else{
alert("not ie");
}

Third type:

Copy code The code is as follows:

var navigatorName = "Microsoft Internet Explorer";
var isIE = false;
if( navigator.appName == navigatorName ){
isIE = true;
alert("ie")
}else{
alert("not ie")
}

Fourth method:

Copy code The code is as follows:

if(! [1 ,])alert("This is Internet Explorer");
else alert("This is not Internet Explorer");