How to return success from ajax post in Node.js
By returning JSON when you're expecting JSON
res.end('{"success" : "Updated Successfully", "status" : 200}');and then
$.ajax({ .... datatype: "json", // expecting JSON to be returned success: function (result) { console.log(result); if(result.status == 200){ self.isEditMode(!self.isEditMode()); } }, error: function(result){ console.log(result); }});In Node you could always use JSON.stringify to get valid JSON as well
var response = { status : 200, success : 'Updated Successfully'}res.end(JSON.stringify(response));Express also supports doing
res.json({success : "Updated Successfully", status : 200});where it will convert the object to JSON and pass the appropriate headers for you automatically.