app.enable(name) Sets the Boolean setting name to true, where name is one of the properties from the

req.fresh Indicates whether the request is “fresh.” It is the opposite of req.stale. It is true

res.redirect([status,] path) Redirects to the URL derived from the specified path, with specified status, a positive

router.use([path], [function, ...] function) Uses the specified middleware function or functions, with optional mount path path

app.all(path, callback [, callback ...]) This method is like the standard

res.get(field) Returns the HTTP response header specified by field. The match is case-insensitive.

res.format(object) Performs content-negotiation on the Accept HTTP header on the request object, when present. It uses

app.delete(path, callback [, callback ...]) Routes HTTP DELETE requests to the specified path with the specified callback functions. For more

res.append(field [, value]) res.append() is supported by Express v4.11.0+

app.use([path,] function [, function...]) Mounts the specified middleware function or functions at the specified path. If path