Squared concatenation of a Number in JavaScript

We are required to write a JavaScript function that takes in a number and returns a new number in which all the digits of the original number are squared and concatenated.

For example: If the number is −

99

Then the output should be −

8181

because 9^2 is 81 and 1^2 is 1.

Therefore, let’s write the code for this function −

Example

The code for this will be −

const num = 9119; const squared = num => {    const numStr = String(num);    let res = '';    for(let i = 0; i < numStr.length; i++){       const square = Math.pow(+numStr[i], 2);       res += square;    };    return res; }; console.log(squared(num));

Output

The output in the console will be −

811181