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19:19, 24 September 2013 '''User Agent''' string is a string which is visible in the HTTP headers of an HTTP client and in the navigator.userAgent object JavaScript for JS enabled client.
== HTTP ==
For example on Firefox OS devices.
User-Agent: Mozilla/5.0 (Mobile; rv:18.0) Gecko/18.0 Firefox/18.0
== Browsers with JavaScript ==
var ua = navigator.userAgent;
== Around this topic ==
* [[UA/override|User Agent Override]]
[[Category:Web Compatibility|HTTP]]