description

# toLowerCase abstract method

String toLowerCase()

Converts all characters in this string to lower case.

If the string is already in all lower case, this method returns `this`.

    'ALPHABET'.toLowerCase(); // 'alphabet'
    'abc'.toLowerCase(); // 'abc'

This function uses the language independent Unicode mapping and thus only works in some languages.

## Implementation

    // TODO(floitsch): document better. (See EcmaScript for description).
    String toLowerCase();