node.js - Detecting AJAX requests on NodeJS with Express

Question

I'm using NodeJS with Express. How can I tell the difference between an ordinary browser request and an AJAX request? I know I could check the request headers but does Node/Exprsss expose this information?

Answer 1

Most frameworks set the X-Requested-With header to XMLHttpRequest, for which Express has a test:

app.get('/path', function(req, res) {
  var isAjaxRequest = req.xhr;
  ...
});