Day 4:Create a Rectangle Object.js

'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();    
});

function readLine() 
{
    return inputString[currentLine++];
}

/*
 * Complete the Rectangle function
 */
function Rectangle(a, b) 
{
   let rectangle = new Object();
    rectangle.length = a;
    rectangle.width = b;
    rectangle.perimeter = 2 * a + 2 * b;
    rectangle.area = a * b;

    return rectangle;
}


function main() 
{
    const a = +(readLine());
    const b = +(readLine());
    
    const rec = new Rectangle(a, b);
    
    console.log(rec.length);
    console.log(rec.width);
    console.log(rec.perimeter);
    console.log(rec.area);
}