روز 5 در JS: درک Math.Random & Math.floor ، آرایه ، خاصیت طول ..

 Math.random() is a built-in function that returns a floating-point number between 0 (inclusive) and 1 (exclusive). This means the result is always >= 0 and < 1.

const randomNumber = Math.random();
console.log(randomNumber); // e.g., 0.34784310291847

const randomUpTo10 = Math.random() * 10; // 0 <= result < 10

Math.floor(4.9);    // 4
Math.floor(4.1);    // 4
Math.floor(4.0);    // 4
Math.floor(-4.1);   // -5
Math.floor(-4.9);   // -5

const fruits = ["apple", "banana", "cherry"];
const numbers = [1, 2, 3, 4, 5];

array.length 

array.length = number