TypeScript - generate array with 10 random numbers

In this article, we would like to show you how to generate an array with 10 random numbers in TypeScript.

Quick solution:

const array: number[] = Array(10) // array size is 10
  .fill(undefined)
  .map(() => 50 * Math.random()); // numbers from 0-50 (exclusive)

console.log(array);

Note:

Use Math.floor() to get integers instead of float numbers. You can find practical examples in the sections below.

1. Using Array.fill() with map() method

In this example we take the following steps:

1. Create an array with size 10,
2. Use fill() method to fill the array with specified values,
3. use map() method to call Math.random() to generate a random value for each element in the array (from 0-50 exclusive).

Practical example:

const array: number[] = Array(10) // array size is 10
  .fill(undefined)
  .map(() => 50 * Math.random()); // numbers from 0-50 (exclusive)

console.log(array);

If you want to receive integers instead of float numbers use Math.floor() method:

Practical example:

const array: number[] = Array(10) // array size is 10
  .fill(undefined)
  .map(() => Math.floor(50 * Math.random())); // numbers from 0-50 (exclusive)

console.log(array);