How to Get Array Length in TypeScript - Step by Step Examples

How to Get Array Length in TypeScript ?

To get the length of an array in TypeScript, you can use the length property of the array.

In this example,

We create an integer array named numbers with some values.
We then get the length of the array using length property of the array object numbers, and store the returned value in length variable.
Array.length property returns the length of this array.
Finally, we shall print the value in length to standard output.

let numbers: number[] = [1, 2, 3, 4, 5];
let length: number = numbers.length;
console.log(`Length of array is: ${length}`);

Length of array is: 5

In this example,

We create a string array named colors with some values.
We then get the length of the array using length property of the array object colors, and store the returned value in length variable.
Array.length property returns the length of this array.
Finally, we shall print the value in length to standard output.

let colors: string[] = ['red', 'green', 'blue'];
let length: number = colors.length;
console.log(`Length of array is: ${length}`);

Length of array is: 3

In this tutorial, we learned How to Get Array Length in TypeScript language with well detailed examples.