Method chaining on response in Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to send a JSON response with status 200.

Express

res.status(200).[1]({ message: 'Success' });

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

Ajson

Bend

Csend

Dwrite

Attempts:

3 left

💡 Hint

Common Mistakes

Using send instead of json causes the response to be sent as plain text.

Using end does not send JSON data.

The json method sends a JSON response and allows chaining after setting status.

2fill in blank

medium

Complete the code to set a header and send a plain text response.

Express

res.set('Content-Type', 'text/plain').[1]('Hello World');

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Ajson

Bend

Cwrite

Dsend

Attempts:

3 left

💡 Hint

Common Mistakes

Using json sends JSON format, not plain text.

Using end does not allow chaining after setting headers.

The send method sends the response body and supports chaining after setting headers.

3fill in blank

hard

Fix the error in chaining to set status and send a response.

Express

res.[1](404).send('Not Found');

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Astatus

BsendStatus

CsetStatus

DwriteStatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using sendStatus ends the response and chaining send after causes error.

Using setStatus or writeStatus are not valid Express methods.

The correct method to set status for chaining is status. sendStatus sends the response immediately and does not allow chaining.

4fill in blank

hard

Fill both blanks to set a cookie and send a JSON response.

Express

res.[1]('token', 'abc123').[2]({ success: true });

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Acookie

Bjson

Csend

DsetHeader

Attempts:

3 left

💡 Hint

Common Mistakes

Using setHeader instead of cookie does not set cookies properly.

Using send instead of json sends plain text, not JSON.

The cookie method sets a cookie and allows chaining. The json method sends a JSON response.

5fill in blank

hard

Fill all three blanks to set status, header, and send a plain text response.

Express

res.[1](201).[2]('X-Custom', '123').[3]('Created');

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

Astatus

Bset

Csend

Djson

Attempts:

3 left

💡 Hint

Common Mistakes

Using json instead of send sends JSON, not plain text.

Using setHeader instead of set is not the Express method.

Use status to set HTTP status, set to set headers, and send to send the response body as plain text.