Handle query parameters

Example based on Getting started with NodeJS for frontend developers - Part 2.

Add the following to base example, before .listen.

Note use of .query.

  • index.js 
      app.get('/foo', (req, resp) => {
    const { name } = req.query;
    resp.send(`Hello, ${name || world}!`);
  })

Test on:

Handle URL parameters

Add the following to base example, before .listen.

Note use of .params.

app.get('/foo/:name', (req, resp) => {
    const { name } = req.params;
    resp.send(`Hello, ${name || world}!`);
})

Test on:

Handle POST request

  • index.js 
      app.use(express.json());
  app.use(express.urlencoded());

  app.post('/foo', (req, res) => {
    res.status(201)
      .send({
        message: "Created a foo using data",
        data: req.body,
      });
  });

Handle other status codes

  • index.js 
      app.get('/admin', (_req, res) => {
      res.sendStatus(401);
  });