Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.Challenge: FileSystem | Console Applications
Backend Development with Node.js and Express.js
course content

Course Content

Backend Development with Node.js and Express.js

Backend Development with Node.js and Express.js

1. Introduction
Backend Role in WebWhat is Node.js?Key Advantages of Node.js Installing Node.jsCreating Your First Node.js AppChallenge: First Node App"Introduction" Section Sum Up
2. Console Applications
OverviewWhat are Console Applications?Introduction to the FileSystemChallenge: FileSystemCommand Line Interface (CLI) AppsCommander ModuleReadline ModuleConsole App: Guessing GameWorking with DirectoriesConsole App: DirInspect Pro"Console Apps" Section Sum Up
3. Express.js Framework
OverviewRole of Express.js in Web DevelopmentHTTP RequestsSetting up an Express AppCreating RoutesTesting with PostmanMiddlewareBuilt-in MiddlewareCustom Middleware"Express.js Framework" Section Sum Up
4. Developing REST API
OverviewREST API Main ConceptsProject StructureSetting Up the Entry PointImplementing the "GET ALL POSTS" RouteImplementing the "GET POST BY ID" RouteImplementing the "CREATE POST" RouteImplementing the "UPDATE POST BY ID" RouteImplementing the "DELETE POST BY ID" RouteStarting and Testing the APIConclusion and Next Steps

bookChallenge: FileSystem

🏆 Challenge

🎯 Goal

Master the art of task management automation! Your mission is to develop an application that gathers tasks from one source, extracts their content, and integrates them into another file. Your solution should also handle any potential errors along the way.

📋 Task

Imagine you have two files: tasks.txt, which contains a list of existing tasks, and new-task.txt, which includes a single task that must be added to the tasks.txt file.

Follow these steps to complete the challenge and create the real deal on your machine:

  1. Prepare Your Workspace: Start by creating a new folder on your machine and open it using your favorite code editor.
  2. Setup Tasks: Create the tasks.txt file and populate it with the following tasks or use the provided tasks.txt file:
    • Teach a goldfish 🐠 to play chess ♟️;
    • Build a sandcastle 🏰 in your living room 🛋️;
    • Create a song 🎶 using only sounds from nature 🌿.
  3. Define New Task: Create the new-task.txt file and insert the following task or use the provided new-task.txt file:
    • Invent a new dance move and perform it in public. 💃🕺.
  4. Main Script: Craft the app.js file, which will serve as the heart of your application.
    • Import fs Module: Begin by importing the fs module to enable file handling within your application;
    • Read Content: Utilize the readFile function from the fs module to extract the content from the new-task.txt file. Be sure to implement .then() and .catch() to manage both success and error scenarios;
    • Append Content: Inside the .then() block, once the content is successfully read, employ the appendFile function to add the content to the tasks.txt file. Don't forget to append a newline character (\n) after the content.
  5. Run the Magic: Save your app.js file and execute it using Node.js in the terminal with the command node app.

If you prefer to use the code editor below, keep in mind that it does not recognize your files and will not show your progress.


              
123456789

            
const fs = require("fs").___;

fs.___("new-task.txt", "utf-8")
  .then(___ => {
    return fs.___("tasks.txt", ___ + ___);
  })
  .___((error) => {
    console.log("Error:", error);
  });
copy

Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 2. Chapter 4
some-alt