This string is a specific component used in , specifically within the Accept-Language header. It communicates a user's preference for Thai (Thailand) with a weighted "quality" (q-factor) of 0.9 . 1. Technical Decomposition
When a web browser sends a request, it might include a header like: Accept-Language: en-US, th-TH;q=0.9
: Developers use these strings to match user OS settings with available translation files. 0.9,th-TH
The server analyzes this list to determine which version of a page to serve:
: Used by clients to request specific data formats or localized error messages from RESTful APIs. Summary Table: Component Meanings th Language Code ISO 639-1 code for Thai TH Region Code ISO 3166-1 alpha-2 code for Thailand 0.9 90% weight ; high priority but not the absolute first choice This string is a specific component used in
: If neither is found, the server provides its own default language. 3. Contextual Variance
The string breaks down into two distinct parts defined by the HTTP/1.1 specification : Technical Decomposition When a web browser sends a
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