Learning Node.js Development

Error handling in the JSON request

To show the error handling request with JSON, we're going to call app.get. This app.get is going to let us register another handler for a get HTTP request. In our case the route we're looking for inside of quotes is going to be /bad. When someone makes a request for this page, what we want to do is going to be specified in the callback. The callback will take our two arguments, req and res. We'll use an arrow function (=>), which I've used for all of the handlers so far:

app.get('/bad', (req, res) => {  });app.listen(3000);

Inside the arrow function (=>), we'll send back some JSON by calling res.send. But instead of passing in a string, or some string HTML, we'll pass in an object:

app.get('/bad', (req, res) ...