Why error handling differs from REST in GraphQL - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to query a GraphQL API for a user's name.

GraphQL

query { user(id: [1]) { name } }

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

AuserId

B"123"

C123

D'123'

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted numbers for string IDs

Using single quotes instead of double quotes

The user ID must be a string in quotes in GraphQL queries.

2fill in blank

medium

Complete the code to handle errors in a GraphQL response.

GraphQL

if (response.[1]) { console.error(response.errors); }

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

Aerrors

Bdata

Cstatus

Dmessage

Attempts:

3 left

💡 Hint

Common Mistakes

Checking 'data' instead of 'errors'

Checking HTTP status codes only

GraphQL responses include an 'errors' field when errors occur.

3fill in blank

hard

Fix the error in the GraphQL query to fetch a user's email.

GraphQL

query { user(id: [1]) { email } }

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

A'123'

B123

C"123"

DuserId

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted numbers

Using single quotes instead of double quotes

The ID must be a string in double quotes for the query to work correctly.

4fill in blank

hard

Fill both blanks to check if a GraphQL response has errors and log them.

GraphQL

if (response.[1] && response.[2].length > 0) { console.log('Errors found'); }

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

Aerrors

Bdata

Cstatus

Dmessage

Attempts:

3 left

💡 Hint

Common Mistakes

Checking 'data' or 'status' instead of 'errors'

GraphQL errors are in the 'errors' array; check if it exists and has items.

5fill in blank

hard

Fill all three blanks to extract data, check errors, and handle them in GraphQL response.

GraphQL

const [1] = response.[2];
if (response.[3]) { console.error('GraphQL errors:', response.errors); }

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

Adata

Cerrors

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Checking 'status' instead of 'errors'

Not extracting 'data' properly

Extract 'data' from response, check 'errors' field to handle errors.