Request size limits in Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set a JSON body size limit of 1mb in Express.

Express

app.use(express.json({ limit: '[1]' }));

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

A1mbs

B1mb

C1000kb

Done_mb

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect units like '1mbs' or 'one_mb'.

Passing a number without quotes.

The limit option accepts a string like '1mb' to set the max request body size.

2fill in blank

medium

Complete the code to set a URL-encoded body size limit of 500kb in Express.

Express

app.use(express.urlencoded({ extended: true, limit: '[1]' }));

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

A500kb

B500mb

C0.5mb

D500

Attempts:

3 left

💡 Hint

Common Mistakes

Using '500' without units causes no size limit.

Using '500mb' is too large for this example.

The limit option for express.urlencoded sets the max size. '500kb' means 500 kilobytes.

3fill in blank

hard

Fix the error in this code that tries to limit JSON body size to 2mb.

Express

app.use(express.json({ limit: [1] }));

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

A'2mb'

B2

C"2mb"

D2mb

Attempts:

3 left

💡 Hint

Common Mistakes

Passing 2mb without quotes causes a syntax error.

Passing a number like 2 means 2 bytes, which is too small.

The limit value must be a string with quotes, like '2mb'. Without quotes, it causes an error.

4fill in blank

hard

Fill both blanks to limit JSON and URL-encoded bodies to 1mb in Express.

Express

app.use(express.json({ limit: '[1]' }));
app.use(express.urlencoded({ extended: true, limit: '[2]' }));

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

A1mb

B1000kb

C1kb

D10mb

Attempts:

3 left

💡 Hint

Common Mistakes

Using '1kb' is too small for typical requests.

Using '10mb' is larger than requested.

Both express.json and express.urlencoded accept size limits as strings. '1mb' and '1000kb' are equivalent.

5fill in blank

hard

Fill all three blanks to create an Express app limiting JSON to 2mb, URL-encoded to 1mb, and text bodies to 500kb.

Express

app.use(express.json({ limit: '[1]' }));
app.use(express.urlencoded({ extended: true, limit: '[2]' }));
app.use(express.text({ limit: '[3]' }));

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

A2mb

B1mb

C500kb

D5mb

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the size limits for each parser.

Using numbers without quotes.

Each middleware sets a size limit string: JSON to '2mb', URL-encoded to '1mb', and text to '500kb'.