Node.js Synchronous vs Asynchronous File Operations Example

 Experiment #2

In this experiment, we explore how Node.js handles synchronous and asynchronous file operations using the built-in fs module. We compare fs.readFileSync() and fs.readFile() to understand the difference in execution order and blocking behavior.

Title:

Develop a Node.js Program for Demonstrating Synchronous and Asynchronous Operations.

Aim:

The objective of the project is to create a basic Node.js program that compares between synchronous and asynchronous file operations with the help of the File System (fs) module.

Software Installations Required for Project Completion:

• Windows 10/11
• Node.js
• NPM
• Visual Studio Code

Source Code:

Step 1: Create a Project Folder

Create a folder named:

NodeDemo

Step 2: Create a File Named test.txt

Hello Node.js

Step 3: Create a File Named Source.js

const fs = require("fs");

console.log(fs.readFileSync("test.txt", "utf8"));
fs.readFile("test.txt", "utf8", (err, data) => console.log(data));
console.log("Done");

Step 4: Run the Program

node Source.js

Output

Hello Node.js
Done
Hello Node.js

Terminal Output

C:\NodeDemo> node Source.js
Hello Node.js
Done
Hello Node.js

Result:

Thus, the Node.js program was executed successfully and the difference between synchronous and asynchronous file operations was demonstrated.