| React.js | Node.js | Express.js | |
|---|---|---|---|
| Definition | A JavaScript library | A runtime environment | A web application framework |
| Type | Library | Runtime environment | Framework |
| Usage | Front-end development | Server-side development | Server-side development and API creation |
| Purpose | Building user interfaces | Running JavaScript on the server | Building web applications and APIs |
| Language | JavaScript | JavaScript | JavaScript |
| Component-Based | Yes | No | No |
| Server-Side Rendering | No | Yes | Yes (with additional setup) |
| Common Use Cases | Building web applications with dynamic UIs | Building scalable server-side applications | Creating RESTful APIs and handling HTTP requests |
| Dependencies | Typically used with Node.js for server communication | Used to run JavaScript code on the server | A framework built on top of Node.js, used for building web applications and APIs |
| Routing | React Router is commonly used for client-side routing | Express.js provides server-side routing capabilities | Express.js is used for server-side routing |
| Package Manager | npm or yarn | npm | npm |
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