Function isValidLocale

isValidLocale(locale): boolean
JMap.Language.isValidLocale

returns true is the passed locale is supported by JMap Server NG, false otherwise
Parameters
- locale: JLOCALES
  the locale to be tested
Returns boolean
Example
```
console.log(JMap.Language.isValidLocale("fr"))
// true
console.log(JMap.Language.isValidLocale("ch"))
// false
```