Why does ExpressJS not match all paths on root app.get('/'-CodePudding

The following express routing matches GET / but not GET /anything/else.

app.get('/', (req, res, next) => {
  res.send('I only answer to /');
});

Is Express Routing not prefix-based or "deep"?

I know this works but it seems wrong:

app.get('*', (req, res, next) => {
  res.send('I answer to any path');
});

CodePudding user response：

app.get must match the full path and stores it in req.path, whereas app.use matches a prefix and sets req.path to the path after the prefix. You could write

app.use('/', (req, res, next) => {
  if (req.method === "GET")
    res.send('I answer to all GET requests');
  else
    next();
});

GET /anything/else would be matched by app.use('/anything', ...), but then req.path = '/else'.

CodePudding user response：

One possible fix although it's not as elegant would be:

app.get('/:paramname', () => {
  res.send('I answer to any path')
});

If im not mistaken you could chain the parameters so it will answer to /hello/world too. But you would have to try that... Have a nice day