locutus/php/strings/str_shuffle.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.str_shuffle = str_shuffle;
function str_shuffle(...providedArgs) {
    //  discuss at: https://locutus.io/php/str_shuffle/
    // original by: Brett Zamir (https://brett-zamir.me)
    //   example 1: var $shuffled = str_shuffle("abcdef")
    //   example 1: var $result = $shuffled.length
    //   returns 1: 6
    if (providedArgs.length === 0) {
        throw new Error('Wrong parameter count for str_shuffle()');
    }
    const [input] = providedArgs;
    if (input === null) {
        return '';
    }
    let str = String(input);
    let newStr = '';
    let rand;
    let i = str.length;
    while (i) {
        rand = Math.floor(Math.random() * i);
        newStr += str.charAt(rand);
        str = str.substring(0, rand) + str.substr(rand + 1);
        i--;
    }
    return newStr;
}