SyntaxError {stack: "SyntaxError: Unexpected token :↵    at eval (nativ…st:3000/javascripts/jquery-1.10.1.min.js:6:18626)", message: "Unexpected token :"}

app.post('/api/sav', function(req, res, next) {
  var result = {"status": "success"};
    res.send(JSON.stringify(result))  // this works

    //res.type('json');  // this has no effect
    //res.type('application/json');  // this has no effect
    //res.send(result); // this fails but should work, no?
    //res.json(result); // this fails but should work, no?
});

$.ajax({
     type: "POST",
     url: '/api/sav',
     data: content,
     success: function(data, textStatus, jqXhr) {
       console.log(data);
     },
     error: function(jqXHR, textStatus,errorThrown ) {
        console.log(textStatus);
        console.log(errorThrown);
     },
     dataType: 'json'
 });