locutus/c/ctype/tolower.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.tolower = tolower;
function tolower(c) {
    //      discuss at: https://locutus.io/c/ctype/tolower/
    // parity verified: C 23
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //          note 1: Converts an uppercase letter to lowercase.
    //       example 1: tolower('A')
    //       returns 1: 'a'
    //       example 2: tolower('a')
    //       returns 2: 'a'
    //       example 3: tolower('5')
    //       returns 3: '5'
    c = (c + '').charAt(0);
    return c.toLowerCase();
}