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Think of the PUT method like editing a saved contact in your phone.
When you update the name or number, the old data is replaced with new data.
That’s exactly what PUT does in web development.
Definition:
The PUT HTTP method is used to update an existing resource completely on the server.
Action | Method |
| Create new data | POST |
| Read data | GET |
| Update full data | PUT |
| Delete data | DELETE |
| const express = require('express'); const app = express(); app.use(express.json()); let users = [ { id: 1, name: "Taniya", age: 20 } ]; // PUT method app.put('/users/:id', (req, res) => { const id = parseInt(req.params.id); const { name, age } = req.body; const user = users.find(u => u.id === id); if (!user) { return res.status(404).send("User not found"); } // Replacing entire data user.name = name; user.age = age; res.send({ message: "User updated successfully", updatedUser: user }); }); app.listen(3000); |
| PUT /users/1 Content-Type: application/json { "name": "Taniya Sharma", "age": 21 } |
| 200 OK User updated successfully |
| PUT /users/1 (same data multiple times) → Result remains same |
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Introduction to PUT Method
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