Is Ajax in WordPress

Question

Is there anyway to detect if the current server operation is currently an AJAX request in WordPress?

For example:

is_ajax()

Answer 1

To see if the current request is an AJAX request sent from a js library ( like jQuery ), you could try something like this:

if( ! empty( $_SERVER[ 'HTTP_X_REQUESTED_WITH' ] ) &&
      strtolower( $_SERVER[ 'HTTP_X_REQUESTED_WITH' ]) == 'xmlhttprequest' ) {
    //This is an ajax request.
}