How to Count the Number of Squares in a Grid of Size m*n Using JavaScript?

To count the number of squares in a grid of size m x n using JavaScript, you can use the formula (m * (m + 1) * n * (n + 1)) / 4. The formula calculates the total number of squares in a grid of size m x n by multiplying m by m + 1 and n by n + 1 and dividing the result by 4. Here’s an example:

function countSquares(m, n) {
  return (m * (m + 1) * n * (n + 1)) / 4;
}

const m = 3;
const n = 4;
const count = countSquares(m, n);
console.log(`The number of squares in a ${m} x ${n} grid is: ${count}.`);

In the example above, the countSquares function takes m and n as arguments. The formula is used to calculate the total number of squares in a grid of size m x n. The result is logged to the console.