DeflateAwning/Debugging_Browser_Locale_Issues.md

Last active December 5, 2025 20:56

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Debugging_Browser_Locale_Issues.md

Debugging Browser Locale Issues

Helpful JS Validations

// Diagnose
Intl.DateTimeFormat().resolvedOptions() // Lists the locale used to format dates.
new Date().toLocaleString() // Main date format things are returned as.

// These are normally correct. They show what languages are requested.
navigator.languages
navigator.language

// Sanity checks:
new Date().toLocaleDateString("en-CA")

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