JS Detect IE4 Without Catching IE5.0
Jul 23, 2002
Has anyone tried working out this one?
How to detect IE4 without wrongly detecting IE5.0 (IE5.0 usually returns a navigator.appVersion of 4.0)
Here's the code im working with using substring of IE version:
// <head>
<script language="JavaScript">
this.version = navigator.appVersion;
</script>
// <body>
<script language="JavaScript">
if (navigator.appName == "Microsoft Internet Explorer"){
if (version.substring(0,1) <= 4){
if (version.substring(22,23) <= 4){
document.write("This Browser is IE4 or lower!");
}
else{
document.write("This Browser is IE5 or higher!");
}
}
}
else{
document.write("This Browser isn't IE!");
}
document.write("<br>This Browser is " +version);
</script>
The version string usually return's something like this:
4.0 (compatible; MSIE 5.0; Windows 98; DigExt)
Can anyone see any problem with using this method?
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