当两个输入都是整数时，此实现可以正常工作。

function randomRange(myMin, myMax) {
  return Math.floor(
    Math.random() * (Math.ceil(myMax) - Math.floor(myMin) + 1) + myMin
  );
}

为了获得最佳性能，您只需使用：

var r = (Math.random() * (maximum - minimum + 1) ) << 0

我制作了这个函数，它考虑了min、max、exclude（要排除的整数列表）和seed（如果您需要种子随机生成器）等选项。

get_random_int = function(args={})
{
    let def_args =
    {
        min: 0,
        max: 1,
        exclude: false,
        seed: Math.random
    }

    args = Object.assign(def_args, args)

    let num = Math.floor(args.seed() * (args.max - args.min + 1) + args.min)

    if(args.exclude)
    {
        let diff = args.max - args.min
        let n = num

        for(let i=0; i<diff*2; i++)
        {
            if(args.exclude.includes(n))
            {
                if(n + 1 <= args.max)
                {
                    n += 1
                }

                else
                {
                    n = args.min
                }
            }

            else
            {
                num = n
                break
            }
        }
    }

    return num
}

它可以像这样使用：

let n = get_random_int
(
    {
        min: 0,
        max: some_list.length - 1,
        exclude: [3, 6, 5],
        seed: my_seed_function
    }
)

或者更简单地说：

let n = get_random_int
(
    {
        min: 0,
        max: some_list.length - 1
    }
)

然后您可以执行以下操作：

let item = some_list[n]

主旨：https://gist.github.com/madprops/757deb000bdec25776d5036dae58ee6e

下面是JavaScript中Random类的Microsoft.NET实现-

var Random = (function () {
    function Random(Seed) {
        if (!Seed) {
            Seed = this.milliseconds();
        }
        this.SeedArray = [];
        for (var i = 0; i < 56; i++)
            this.SeedArray.push(0);
        var num = (Seed == -2147483648) ? 2147483647 : Math.abs(Seed);
        var num2 = 161803398 - num;
        this.SeedArray[55] = num2;
        var num3 = 1;
        for (var i_1 = 1; i_1 < 55; i_1++) {
            var num4 = 21 * i_1 % 55;
            this.SeedArray[num4] = num3;
            num3 = num2 - num3;
            if (num3 < 0) {
                num3 += 2147483647;
            }
            num2 = this.SeedArray[num4];
        }
        for (var j = 1; j < 5; j++) {
            for (var k = 1; k < 56; k++) {
                this.SeedArray[k] -= this.SeedArray[1 + (k + 30) % 55];
                if (this.SeedArray[k] < 0) {
                    this.SeedArray[k] += 2147483647;
                }
            }
        }
        this.inext = 0;
        this.inextp = 21;
        Seed = 1;
    }

    Random.prototype.milliseconds = function () {
        var str = new Date().valueOf().toString();
        return parseInt(str.substr(str.length - 6));
    };

    Random.prototype.InternalSample = function () {
        var num = this.inext;
        var num2 = this.inextp;
        if (++num >= 56) {
            num = 1;
        }
        if (++num2 >= 56) {
            num2 = 1;
        }
        var num3 = this.SeedArray[num] - this.SeedArray[num2];
        if (num3 == 2147483647) {
            num3--;
        }
        if (num3 < 0) {
            num3 += 2147483647;
        }
        this.SeedArray[num] = num3;
        this.inext = num;
        this.inextp = num2;
        return num3;
    };

    Random.prototype.Sample = function () {
        return this.InternalSample() * 4.6566128752457969E-10;
    };

    Random.prototype.GetSampleForLargeRange = function () {
        var num = this.InternalSample();
        var flag = this.InternalSample() % 2 == 0;
        if (flag) {
            num = -num;
        }
        var num2 = num;
        num2 += 2147483646.0;
        return num2 / 4294967293.0;
    };

    Random.prototype.Next = function (minValue, maxValue) {
        if (!minValue && !maxValue)
            return this.InternalSample();
        var num = maxValue - minValue;
        if (num <= 2147483647) {
            return parseInt((this.Sample() * num + minValue).toFixed(0));
        }
        return this.GetSampleForLargeRange() * num + minValue;
    };

    Random.prototype.NextDouble = function () {
        return this.Sample();
    };

    Random.prototype.NextBytes = function (buffer) {
        for (var i = 0; i < buffer.length; i++) {
            buffer[i] = this.InternalSample() % 256;
        }
    };
    return Random;
}());

Use:

var r = new Random();
var nextInt = r.Next(1, 100); // Returns an integer between range
var nextDbl = r.NextDouble(); // Returns a random decimal

使用以下代码，您可以在给定范围内生成一个随机数数组，而无需重复。

function genRandomNumber(how_many_numbers, min, max) {

    // Parameters
    //
    //   how_many_numbers: How many numbers you want to
    //                     generate. For example, it is 5.
    //
    //   min (inclusive):  Minimum/low value of a range. It
    //                     must be any positive integer, but
    //                     less than max. I.e., 4.
    //
    //   max (inclusive):  Maximum value of a range. it must
    //                     be any positive integer. I.e., 50
    //
    //   Return type: array

    var random_number = [];
    for (var i = 0; i < how_many_numbers; i++) {
        var gen_num = parseInt((Math.random() * (max-min+1)) + min);
        do {
            var is_exist = random_number.indexOf(gen_num);
            if (is_exist >= 0) {
                gen_num = parseInt((Math.random() * (max-min+1)) + min);
            }
            else {
                random_number.push(gen_num);
                is_exist = -2;
            }
        }
        while (is_exist > -1);
    }
    document.getElementById('box').innerHTML = random_number;
}

您可以使用此代码段，

let randomNumber = function(first, second) {
    let number = Math.floor(Math.random()*Math.floor(second));
    while(number < first) {

        number = Math.floor(Math.random()*Math.floor(second));
    }
    return number;
}