How to check if an Array is Empty in TypeScript - Step by Step Examples

How to check if an Array is Empty in TypeScript ?

To check if an array is empty in TypeScript, you can use the length property.

In this example,

We create an array named numbers with some elements.
We check if the array is empty by comparing its length property with 0 and store the result in the variable isEmpty.
Finally, we log whether the array is empty or not.

const numbers: number[] = [1, 2, 3];
const isEmpty: boolean = numbers.length === 0;
console.log(`Array is empty: ${isEmpty}`);

Array is empty: false

In this example,

We create an empty array named emptyArray.
We check if the array is empty by comparing its length property with 0 and store the result in the variable isEmpty.
Finally, we log whether the array is empty or not.

const emptyArray: number[] = [];
const isEmpty: boolean = emptyArray.length === 0;
console.log(`Array is empty: ${isEmpty}`);

Array is empty: true

In this tutorial, we learned How to check if an Array is Empty in TypeScript language with well detailed examples.