Building GET Endpoints for API

GET endpoints are used to retrieve data from the server.

They return data without changing anything.

const users = [
  { id: 1, name: 'John' },
  { id: 2, name: 'Anna' }
];

app.get('/users', (req, res) => {
  res.json(users);
});

This endpoint returns all users.

You can also return a single item using a route parameter:

app.get('/users/:id', (req, res) => {
  const id = Number(req.params.id);

  const user = users.find(u => u.id === id);

  res.json(user);
});

Examples:

• '/users': returns all users;
• '/users/1': returns user with id 1.

GET endpoints are the most common way to read data in an API.