app.all(path, [callback...], callback)

This method functions just like the app.VERB() methods, however it matches all HTTP verbs.

This method is extremely useful for mapping “global” logic for specific path prefixes or arbitrary matches. For example if you placed the following route at the top of all other route definitions, it would require that all routes from that point on would require authentication, and automatically load a user. Keep in mind that these callbacks do not have to act as end points, loadUser can perform a task, then next() to continue matching subsequent routes.

app.all('*', requireAuthentication, loadUser);

Or the equivalent:

app.all('*', requireAuthentication);
app.all('*', loadUser);

Another great example of this is white-listed “global” functionality. Here the example is much like before, however only restricting paths prefixed with “/api”:

app.all('/api/*', requireAuthentication);