Browser version detection in Javascript

var ns4 = (navigator.appName.indexOf("Netscape")>=0 && 
          parseFloat(navigator.appVersion) >= 4 && 
          parseFloat(navigator.appVersion) < 5)? true : false;

var ns6 = (parseFloat(navigator.appVersion) >= 5 && 
          navigator.appName.indexOf("Netscape")>=0 )? truefalse;

var ns = (document.layers)? true:false;

var ie = (document.all)? true:false;

Example usage

function GetElement(id){
    if(ie) {return document.all[id];}
    else {return document.getElementById(id);}
Author Paul Hayman

Paul is the COO of kwiboo ltd and has more than 20 years IT consultancy experience. He has consulted for a number of blue chip companies and has been exposed to the folowing sectors: Utilities, Telecommunications, Insurance, Media, Investment Banking, Leisure, Legal, CRM, Pharmaceuticals, Interactive Gaming, Mobile Communications, Online Services.

Paul is the COO and co-founder of kwiboo ( and is also the creator of GeekZilla.

Add Comment


Your comment has been received and will be shown once it passes moderation.