How to Join Arrays in TypeScript - Step by Step Examples

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How to Join Arrays in TypeScript ?

Answer

To join arrays in TypeScript, you can use the concat method or the spread operator (...).

✐ Examples

1 Joining Arrays using concat Method

In this example,

We create two arrays, arr1 and arr2.
We then use the concat method to concatenate arr1 and arr2 into a new array result.
The result array contains elements from both arr1 and arr2.

TypeScript Program

const arr1: number[] = [1, 2, 3];
const arr2: number[] = [4, 5, 6];
const result: number[] = arr1.concat(arr2);
console.log('Joined Array:', result);

Output

Joined Array: [ 1, 2, 3, 4, 5, 6 ]

2 Joining Arrays using Spread Operator

In this example,

We create two arrays, arr1 and arr2.
We then use the spread operator (...) to spread elements of arr1 and arr2 into a new array result.
The result array contains elements from both arr1 and arr2.

TypeScript Program

const arr1: number[] = [1, 2, 3];
const arr2: number[] = [4, 5, 6];
const result: number[] = [...arr1, ...arr2];
console.log('Joined Array:', result);

Output

Joined Array: [ 1, 2, 3, 4, 5, 6 ]

Summary

In this tutorial, we learned How to Join Arrays in TypeScript language with well detailed examples.

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