How to check if an Array is Not Empty in TypeScript - Step by Step Examples

How to check if an Array is Not Empty in TypeScript ?

In TypeScript, you can also use the length property of the array to check if it is not empty.

In this example,

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

let numbers: number[] = [1, 2, 3];
let notEmpty: boolean = numbers.length !== 0;
console.log(`Array is not empty: ${notEmpty}`);

Array is not empty: true

In this example,

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

let emptyArray: number[] = [];
let notEmpty: boolean = emptyArray.length !== 0;
console.log(`Array is not empty: ${notEmpty}`);

Array is not empty: false

In this tutorial, we learned How to check if an Array is Not Empty in TypeScript language with well detailed examples.