How do I handle query parameters in Express.js?

How do I handle query parameters in Express.js?

In Express.js, you can access query parameters using the req.query object. For example, if your URL is /search?term=node, you can get the term with req.query.term.

Can you give me an example of how to use it in a route?

Sure! Here's a simple example:

app.get('/search', (req, res) => {
    const term = req.query.term;
    res.send(`You searched for: ${term}`);
});

What if I have multiple query parameters?

You can access multiple query parameters in the same way. For example, if your URL is /search?term=node&sort=asc, you can get both with req.query.term and req.query.sort.

Is there a way to validate these query parameters?

Yes, you can use middleware like express-validator to validate query parameters before processing them.