Write a JavaScript Program to Create Two Dimensional Array

write-a-javascript-program-to-create-two-dimensional-array

In JavaScript, you can create a two-dimensional array using nested arrays.

A two-dimensional array is an array of arrays, where each element in the parent array represents a row, and each child array represents the columns of that row.

To create a two-dimensional array in JavaScript, you can follow these steps:

Step 1: Declare an array variable and assign it to an empty array.

let twoDimArray = [];

Step 2: Create a loop to add rows to the array. You can use a for loop or a while loop, depending on your preference.

for (let i = 0; i < numRows; i++) {
twoDimArray.push([]);
}

In this example, numRows is the number of rows you want to create. We’re using the push() method to add an empty array to the twoDimArray for each row.

Step 3: Create another loop to add columns to each row.

for (let i = 0; i < numRows; i++) {
for (let j = 0; j < numCols; j++) {
twoDimArray[i].push(0);
}
}

In this example, numCols is the number of columns you want to create.

We’re using the push() method again to add a 0 to each row’s child array for each column.

And that’s it! You now have a two-dimensional array in JavaScript.

Here’s the complete program:

let twoDimArray = [];

for (let i = 0; i < numRows; i++) {
twoDimArray.push([]);

for (let j = 0; j < numCols; j++) {
twoDimArray[i].push(0);
}
}

You can replace numRows and numCols with the number of rows and columns you want to create, respectively.

Overall, creating a two-dimensional array in JavaScript is a straightforward process that involves creating nested arrays to represent rows and columns.

With this knowledge, you can create complex data structures and manipulate them in a variety of ways using JavaScript.

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