June 24, 2009

2 Browser Detection JavaScript

Browser Detection JavaScript
Browser Detection

Almost everything in this tutorial works on all Javascript-enabled browsers. However, there are some things that just don't work on certain browsers - specially on older browsers.

So, sometimes it can be very useful to detect the visitor' s browser type and version, and then serve up the appropriate information.

The Navigator Object

The Javascript Navigator object contains all information about the visitor' s browser. We are going to look at two properties of the Navigator object:

. appName - holds the name of the browser

. appVersion - holds, among other things, the version of the browser


<script type="text/javascript">
var browser=navigator.appName
var b_version=navigator.appVersion
var version=parseFloat (b_version)
document.write ("Browser name: "+ browser)
document.write ("<br />")
document.write ("Browser version: "+ version)


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