rand.js

const date = new Date();
const seed = date.getFullYear() * 10000 + (date.getMonth() + 1) * 100 + date.getDate();

let nums = [...new Array(50).keys()]; // [0, 1, 2, 3, ..., 29];

const rand = (() => {
    let next = seed;
    return () => (next = (1103515245 * next + 12345) % 10000000) % 3;
})();

console.log(nums.sort((a, b) => rand() - 1));