Revised answerJoin Stack Overflow to learn, share knowledge, and build your career. There will only be a difference in the few cases such rolowercase Turkish tolowercase js the rules for that language conflict tolowercase js the regular Unicode case mappings. Also note that the toLowerCase and toLocaleLowerCase functions are implemented to work generically on any value type. Therefore you can invoke these functions even on non- String objects. Doing so will imply automatic tolowercase js to a string value prior to changing the case of each character in the tolpwercase string value.
Join Stack Overflow to learn, share knowledge, and build your career. There will only be a difference in the few cases such as Turkish where the rules for that language conflict with the regular Unicode case mappings.
Also note that the toLowerCase and toLocaleLowerCase functions are implemented to work generically on any value type. Therefore you can invoke these functions even on non- String objects.
Doing so will imply automatic conversion to a string value prior to changing the case of each character in the resulting string value. For example, you can apply toLowerCase directly on a date like this:. The second form is generally preferred for its simplicity and readability. On earlier versions of IE, the first had the benefit that it could work with a null value.
The fix is straight forward though - just force the darn thing into a String!:. These methods are used to cover a string or alphabet from lower case to upper case or vice versa.
It throws a TypeError exception when I try it. That bit used to hold true on earlier versions of IE where it was tested at the time the answer was originally posted. I've updated the answer to reflect your feedback.
So, you can do something like: VisioN k 19 The browsers respond to navigator. But there is no way to get user's Accept-Lang setting in the browser as far as I could find.
Only Chrome gives me trouble although I have configured every browser as tr-TR locale preferred. For most languages, this will return the same as I think it's valid for Turkish, it doesn't differ it's configured as en or tr. Farewell Stack Exchange 1. Accept-Language reflects the user's chosen preferences for what languages they want to receive in web pages and this setting is unfortuately inaccessible to JS.
Both of these values are unrelated to the system locale, which is the bit that decides what toLocaleLowerCase will do; that's an OS-level setting out of scope of the browser's prefs. I thought Accept-Language and navigator. You can configure the default language in order via browsers' settings screens, but so you can't configure what navigator.