req.query for query strings in Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to access the query string parameter named 'name'.

Express

app.get('/hello', (req, res) => {
  const userName = req.[1].name;
  res.send(`Hello, ${userName}!`);
});

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

Aquery

Bbody

Cparams

Dheaders

Attempts:

3 left

💡 Hint

Common Mistakes

Using req.params instead of req.query

Trying to get query parameters from req.body

In Express, req.query holds the query string parameters from the URL.

2fill in blank

medium

Complete the code to send back the 'age' query parameter as a number.

Express

app.get('/age', (req, res) => {
  const age = Number(req.[1].age);
  res.send(`You are ${age} years old.`);
});

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

Abody

Bparams

Ccookies

Dquery

Attempts:

3 left

💡 Hint

Common Mistakes

Not converting the query string to a number

Using req.params instead of req.query

Query parameters are accessed via req.query. They are strings by default, so convert to number if needed.

3fill in blank

hard

Fix the error in accessing the 'search' query parameter.

Express

app.get('/search', (req, res) => {
  const term = req.[1].search;
  res.send(`Searching for: ${term}`);
});

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

Aquery

Bparams

Cbody

Dsession

Attempts:

3 left

💡 Hint

Common Mistakes

Using req.params or req.body instead of req.query

Trying to access query parameters from req.session

The search parameter is part of the query string, so it must be accessed via req.query.

4fill in blank

hard

Fill both blanks to create a response showing 'category' and 'page' from query strings.

Express

app.get('/items', (req, res) => {
  const category = req.[1].category;
  const page = Number(req.[2].page);
  res.send(`Category: ${category}, Page: ${page}`);
});

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

Aquery

Bparams

Cbody

Dcookies

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing req.params and req.query

Not converting page to a number

Both category and page come from query strings, so use req.query for both.

5fill in blank

hard

Fill all three blanks to create a filtered list using 'type', 'sort', and 'limit' query parameters.

Express

app.get('/filter', (req, res) => {
  const type = req.[1].type;
  const sort = req.[2].sort;
  const limit = Number(req.[3].limit);
  res.send(`Filter: type=${type}, sort=${sort}, limit=${limit}`);
});

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

Aparams

Bquery

Cbody

Dcookies

Attempts:

3 left

💡 Hint

Common Mistakes

Using different request properties for each parameter

Forgetting to convert 'limit' to a number

All these values come from the query string, so use req.query for each.