Node.js
- Getting started with Node.js
- Awesome Book
- Awesome Community
- Awesome Course
- Awesome Tutorial
- Awesome YouTube
- Arduino communication with nodeJs
- async.js
- Async/Await
- Asynchronous programming
- Autoreload on changes
- Avoid callback hell
- Bluebird Promises
- Callback to Promise
- Cassandra Integration
- CLI
- Client-server communication
- Cluster Module
- Connect to Mongodb
- Creating a Node.js Library that Supports Both Promises and Error-First Callbacks
- Creating API's with Node.js
- csv parser in node js
- Database (MongoDB with Mongoose)
- Debugging Node.js application
- Deliver HTML or any other sort of file
- Dependency Injection
- Deploying Node.js application without downtime.
- Deploying Node.js applications in production
- ECMAScript 2015 (ES6) with Node.js
- Environment
- Event Emitters
- Eventloop
- Exception handling
- Executing files or commands with Child Processes
- Exporting and Consuming Modules
- Exporting and Importing Module in node.js
- File upload
- Filesystem I/O
- Asynchronously Read from Files
- Avoiding race conditions when creating or using an existing directory
- Changing contents of a text file
- Check Permissions of a File or Directory
- Checking if a file or a directory exists
- Cloning a file using streams
- Copying files by piping streams
- Deleting a file using unlink or unlinkSync
- Determining the line count of a text file
- Listing Directory Contents with readdir or readdirSync
- Reading a file into a Buffer using streams
- Reading a file line by line
- Reading from a file synchronously
- Writing to a file using writeFile or writeFileSync
- Getting started with Nodes profiling
- Good coding style
- Graceful Shutdown
- grunt
- Hack
- Handling POST request in Node.js
- How modules are loaded
- http
- Installing Node.js
- Interacting with Console
- Keep a node application constantly running
- Koa Framework v2
- Lodash
- Loopback - REST Based connector
- metalsmith
- Mongodb integration
- MongoDB Integration for Node.js/Express.js
- Mongoose Library
- MSSQL Intergration
- Multithreading
- Mysql Connection Pool
- MySQL integration
- N-API
- Node JS Localization
- Node server without framework
- Node.js (express.js) with angular.js Sample code
- Node.JS and MongoDB.
- Node.js Architecture & Inner Workings
- Node.js code for STDIN and STDOUT without using any library
- Node.js Design Fundamental
- Node.js Error Management
- Node.js Performance
- Node.js v6 New Features and Improvement
- Node.js with CORS
- Node.JS with ES6
- Node.js with Oracle
- NodeJS Beginner Guide
- NodeJS Frameworks
- Nodejs History
- NodeJs Routing
- NodeJS with Redis
- npm
- nvm - Node Version Manager
- OAuth 2.0
- package.json
- Parsing command line arguments
- Passport integration
- passport.js
- Performance challenges
- PostgreSQL integration
- Project Structure
- Push notifications
- Readline
- Remote Debugging in Node.JS
- Require()
- Restful API Design: Best Practices
- Route-Controller-Service structure for ExpressJS
- Routing ajax requests with Express.JS
- Running node.js as a service
- Securing Node.js applications
- Send Web Notification
- Sending a file stream to client
- Sequelize.js
- Simple REST based CRUD API
- Socket.io communication
- Synchronous vs Asynchronous programming in nodejs
- TCP Sockets
- Template frameworks
- Uninstalling Node.js
- Unit testing frameworks
- Use Cases of Node.js
- Using Browserfiy to resolve 'required' error with browsers
- Using IISNode to host Node.js Web Apps in IIS
- Using Streams
- Using WebSocket's with Node.JS
- Web Apps With Express
- Windows authentication under node.js
- Yarn Package Manager
Node.js Filesystem I/O Reading from a file synchronously
Example
For any file operations, you will need the filesystem module:
const fs = require('fs');
Reading a String
fs.readFileSync behaves similarly to fs.readFile, but does not take a callback as it completes synchronously and therefore blocks the main thread. Most node.js developers prefer the asynchronous variants which will cause virtually no delay in the program execution.
If an encoding option is specified, a string will be returned, otherwise a Buffer will be returned.
// Read a string from another file synchronously
let content;
try {
content = fs.readFileSync('sync.txt', { encoding: 'utf8' });
} catch(err) {
// An error occurred
console.error(err);
}
