locutus/esm/php/math/rand.js

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

export function rand(...providedArgs) {
    //      discuss at: https://locutus.io/php/rand/
    // parity verified: PHP 8.3
    //     original by: Leslie Hoare
    //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
    //          note 1: See the commented out code below for a version which
    //          note 1: will work with our experimental (though probably unnecessary)
    //          note 1: srand() function)
    //       example 1: rand(1, 1)
    //       returns 1: 1
    const [min, max] = providedArgs;
    let minValue;
    let maxValue;
    if (providedArgs.length === 0) {
        minValue = 0;
        maxValue = 2147483647;
    }
    else if (providedArgs.length === 1) {
        throw new Error('Warning: rand() expects exactly 2 parameters, 1 given');
    }
    else {
        minValue = Number(min);
        maxValue = Number(max);
    }
    return Math.floor(Math.random() * (maxValue - minValue + 1)) + minValue;
}