req.xhr

A flag indicating whether the current request (req) appears to be an AJAX request (i.e. it was issued with its "X-Requested-With" header set to "XMLHttpRequest").

Usage

req.xhr;

Example

if (req.xhr) {
  // Yup, it's AJAX alright.
}

Notes

• Whenever possible, you should prefer the req.wantsJSON flag. Avoid writing custom content negotiation logic into your app, as it makes your code more brittle and verbose.