Why is data returned from an ASP.NET page method inside a .d property?

Question

In a jQuery Ajax call to an ASP.NET page method like so:

function getUsers() {
      $.ajax({
          type: "POST",
          url: "http://{localhost}:8078/Default.aspx/GetJson2",
          data: "{}",
          contentType: "application/json",
          dataType: "json",
          success:  function (msg) {
              $("#Result").text(msg.d)
          }
      )};

the data returned from the server is inside a property .d of the msg even though my CLR object has no such property. Why is this?

I've edited the question to reflect what OP said in comments about the intent of the question, but that makes it a duplicate of http://stackoverflow.com/questions/10263916/why-does-web-service-return-data-as-msg-d — Stephen Kennedy, Jun 06 '15 at 12:32

score 2 · Answer 1 · answered May 23 '13 at 11:42

2

It's placing the value of msg.d as text into the element with an id of Result

answered May 23 '13 at 11:42

Joseph

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what is d doing in msg.d. – Karthik Dheeraj May 23 '13 at 12:42
@KarthikDheeraj `msg` is an object, and `d` is a property of `msg`. – Joseph May 23 '13 at 20:59

score 1 · Answer 2 · answered May 23 '13 at 11:44

getUsers is sending an ajax request to http://{localhost}:8078/Default.aspx/GetJson2 and receiving a json string which JQuery is automatically parsing into a javascript object (msg). Then the 'd' property of this object is inserted as text into the DOM element with an id of "Result"

Why is data returned from an ASP.NET page method inside a .d property?

2 Answers2