How to Iterate over a Two Dimensional Array in JavaScript - Step by Step Examples

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How to Iterate over a Two Dimensional Array in JavaScript ?

Answer

To iterate over a Two Dimensional Array in JavaScript, you can use nested loops.

✐ Examples

1 Iterating over a 2D Array of Integers

In this example,

We declare and initialize a 2D array of integers named matrix.
We use nested loops to iterate over the rows and columns of the array.
Inside the inner loop, we access and print each element of the array.

JavaScript Program

const matrix = [[0, 1, 2], [1, 2, 3], [2, 3, 4]];
for (let i = 0; i < matrix.length; i++) {
    for (let j = 0; j < matrix[i].length; j++) {
        console.log(matrix[i][j]);
    }
}

Output

2 Iterating over a 2D Array of Strings

In this example,

We declare and initialize a 2D array of strings named matrix.
We use nested loops to iterate over the rows and columns of the array.
Inside the inner loop, we access and print each element of the array.

JavaScript Program

const matrix = [['Hello', 'World'], ['JavaScript', 'TypeScript']];
for (let i = 0; i < matrix.length; i++) {
    for (let j = 0; j < matrix[i].length; j++) {
        console.log(matrix[i][j]);
    }
}

Output

Hello
World
JavaScript
TypeScript

Summary

In this tutorial, we learned How to Iterate over a Two Dimensional Array in JavaScript language with well detailed examples.

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How to Iterate over a Two Dimensional Array in JavaScript - Step by Step Examples

How to Iterate over a Two Dimensional Array in JavaScript ?

Answer

✐ Examples

1 Iterating over a 2D Array of Integers

JavaScript Program

Output

2 Iterating over a 2D Array of Strings

JavaScript Program

Output

Summary

More JavaScript Arrays Tutorials