Positive and Negative Number Checker in NodeJS

I wrote this simple program using NodeJS to ask the user to give a number and then the program will check and determine if the given number is a positive or negative number.

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Sample Program Output

Program Listing

// num.js

/* Positive and Negative Number Checker in NodeJS    */

/* March 22,2020  Thursday   4:57 PM  */

// Bacolod City,Negros Occidental Philippines

/* Written By: Mr. Jake R. Pomperada   */

var readline = require('readline');

var rl = readline.createInterface({

    input: process.stdin,

    output: process.stdout

});

console.log('\n');

console.log('Positive and Negative Number in NodeJS\n');

console.log('Author : Jake R. Pomperada');

console.log('\n');

rl.question('Enter first value : ', function (x) {

    var a = parseInt(x);

    if (isNaN(a))      {

        console.log('\n');

        console.log("The given value is not a number. Try Again.");

      } else if (a>=0) {

        console.log('\n');

        console.log('The given number ',a, ' is a Positive Number.');

      }

      else {

        console.log('\n');

        console.log('The given number ',a, ' is a Negative Number.');

      }

      console.log('\n');

      console.log('End of Program');

      rl.close();

    

});