How is it possible to create chainable route handlers for a route path in Express.js?(1 Point)Using app.router()Using app.routing()Using app.route()Using app.routes()

In Express.js, it is possible to create chainable route handlers for a route path using app.route(). Here is a step-by-step guide on how to do it:

1. First, you need to define your route path using app.route(). For example, if you want to create a route for a blog post, you can do it like this: app.route('/blog').

2. Next, you can chain your route handlers using .get(), .post(), .put(), and .delete(). These methods correspond to HTTP methods. For example, if you want to handle GET and POST requests for your blog post, you can do it like this:

app.route('/blog')
  .get(function (req, res) {
    // handle GET request
  })
  .post(function (req, res) {
    // handle POST request
  });

3. Inside each route handler, you can access the request object (req), the response object (res), and the next middleware function in the application’s request-response cycle (next).

4. Finally, you can send a response to the client using res.send() or res.json().

Remember that the order of middleware loading is important: middleware functions that are loaded first are also executed first. If app.route() is called from a middleware sub-stack, the route’s middleware sub-stack will be terminated.