locutus/esm/ruby/String/downcase.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

export function downcase(str) {
    // parity verified: Ruby 3.3
    //      discuss at: https://locutus.io/ruby/String/downcase/
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //          note 1: Returns a copy of str with all uppercase letters replaced with lowercase.
    //       example 1: downcase('hELLo')
    //       returns 1: 'hello'
    return (str + '').toLowerCase();
}