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:

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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.

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:

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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:

xxxxxxxxxx

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);