## DEV Community

Lakshya Tyagi

Posted on • Updated on

# JavaScript Code Daily Challenge #3

This is a series of JavaScript Code Daily Challenge. Each day I show a few solutions written in JavaScript. The questions are from coding practice/contest sites such as HackerRank, LeetCode, Codeforces, Atcoder and etc.

Arithmetic Operators
https://www.hackerrank.com/challenges/js10-arithmetic-operators/problem

``````'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', inputStdin => {
inputString += inputStdin;
});

process.stdin.on('end', _ => {
inputString = inputString.trim().split('\n').map(string => {
return string.trim();
});

main();
});

return inputString[currentLine++];
}
``````

Complete both the functions in comment

``````/**
*   Calculate the area of a rectangle.
*
*   length: The length of the rectangle.
*   width: The width of the rectangle.
*
*   Return a number denoting the rectangle's area.
**/
function getArea(length, width) {
let area;

return area;
}
``````
``````/**
*   Calculate the perimeter of a rectangle.
*
*   length: The length of the rectangle.
*   width: The width of the rectangle.
*
*   Return a number denoting the perimeter of a rectangle.
**/
function getPerimeter(length, width) {
let perimeter;

return perimeter;
}
``````
``````function main() {

console.log(getArea(length, width));
console.log(getPerimeter(length, width));
}
``````

Lakshya Tyagi
``````function getArea(length, width) {
let area;
``````function getPerimeter(length, width) {