User agent
From MozillaWiki
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The user agent string (AKA UA 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.
For developer guidance about how to use the user agent string, see:
HTTP
See: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent
Browsers with JavaScript
var ua = navigator.userAgent;
History
- on Firefox OS devices:
User-Agent: Mozilla/5.0 (Mobile; rv:18.0) Gecko/18.0 Firefox/18.0