DELETE route handling in Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a DELETE route for '/items/:id'.

Express

app.[1]('/items/:id', (req, res) => {
  res.send('Delete item ' + req.params.id);
});

Drag options to blanks, or click blank then click option'

Adelete

Bget

Cput

Dpost

Attempts:

3 left

💡 Hint

Common Mistakes

Using app.get instead of app.delete

Using app.post or app.put for delete routes

The DELETE method is used to handle delete requests in Express. Use app.delete to define a DELETE route.

2fill in blank

medium

Complete the code to extract the 'id' parameter from the DELETE route.

Express

app.delete('/items/:id', (req, res) => {
  const itemId = req.[1].id;
  res.send('Deleting item ' + itemId);
});

Drag options to blanks, or click blank then click option'

Abody

Bquery

Cheaders

Dparams

Attempts:

3 left

💡 Hint

Common Mistakes

Using req.body to get route parameters

Using req.query for route parameters

Route parameters like ':id' are accessed via req.params in Express.

3fill in blank

hard

Fix the error in the DELETE route to send a 204 status code with no content.

Express

app.delete('/users/:userId', (req, res) => {
  // Delete user logic here
  res.[1](204).send();
});

Drag options to blanks, or click blank then click option'

AsendStatus

Bstatus

Cjson

Dend

Attempts:

3 left

💡 Hint

Common Mistakes

Using res.sendStatus(204) which ends the response and cannot be chained with .send()

Using res.json() which sends a JSON body

To send a status code with no content, use res.status(204).send(). The sendStatus method sends the status and ends the response (with empty body for 204).

4fill in blank

hard

Fill both blanks to create a DELETE route that checks if the item exists and sends appropriate status.

Express

app.delete('/products/:id', (req, res) => {
  const id = req.[1].id;
  if (!database.has(id)) {
    return res.[2](404).send('Not found');
  }
  database.delete(id);
  res.status(204).send();
});

Drag options to blanks, or click blank then click option'

Aparams

Bbody

Cstatus

DsendStatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using req.body instead of req.params for id

Using res.sendStatus(404) which sends default message without custom text

Use req.params to get the id from the URL. Use res.status(404).send() to send a 404 Not Found status with a message.

5fill in blank

hard

Fill all three blanks to create a DELETE route that validates the id, deletes the item, and sends a JSON response.

Express

app.delete('/tasks/:taskId', (req, res) => {
  const id = req.[1].taskId;
  if (!isValidId(id)) {
    return res.[2](400).json({ error: 'Invalid ID' });
  }
  deleteTask(id);
  res.[3](200).json({ message: 'Task deleted' });
});

Drag options to blanks, or click blank then click option'

Aparams

Bstatus

Dbody

Attempts:

3 left

💡 Hint

Common Mistakes

Using req.body instead of req.params for taskId

Using res.send instead of res.json for JSON response

Using res.sendStatus which sends default text instead of JSON

Use req.params to get the taskId. Use res.status(400).json() to send a 400 error with JSON. Use res.status(200).json() to send success message in JSON.