Student Activity

Student Activity (30-min)

Step-by-Step Procedure

1. Write and Use a Custom Module to Calculate the Factorial of a Number (15 min):

   • Step 1: Create a file named factorial.js and add:

     javascript코드 복사const factorial = (n) => (n <= 1 ? 1 : n * factorial(n - 1));
     module.exports = factorial;

   • Step 2: Create another file named app.js:

     javascript코드 복사const factorial = require('./factorial');
     console.log('Factorial of 5:', factorial(5));

   • Step 3: Run the application:

     bash코드 복사node app.js

   • Expected Output:

     mathematica코드 복사Factorial of 5: 120

2. Install a Third-Party Package like chalk and Use It to Color the Output (15 min):

   • Step 1: Install chalk:

     bash코드 복사npm install chalk

   • Step 2: Modify app.js:

     javascript코드 복사const factorial = require('./factorial');
     const chalk = require('chalk');
     
     console.log(chalk.green('Factorial of 5:'), chalk.blue(factorial(5)));

   • Step 3: Run the application:

     bash코드 복사node app.js

   • Expected Output: The output will display "Factorial of 5:" in green and the result in blue.