jQuery Ajax获取自定义

Using one of the many options defined at http://api.jquery.com/jQuery.ajax/ (or anywhere else) can I map the incoming data to a specific data type rather than the default generic object that is usually returned?

My usual method is to "convert" the generated object by grabbing each property and placing it into the constructor for the new object that I really want to use. Then, I just forget about the old object. I would imagine that there is a much more efficient way to do this.

I came up with/found a few ideas such as simply adding methods to each of the returned objects. It works well, but I just have to know if there is an even more efficient method.

So you're saying that you have code like the following:

function Pirate(name, hasParrot)
{
  this.name = name;
  this.hasParrot = hasParrot;
}

and the server is sending this JSON data:

{
  name: "Blackbeard",
  hasParrot: true
}

which jQuery is converting to a plain object, right? If that's the case, you can use a custom datatype to parse the server's data directly into a Pirate object, like so:

// First define the converter:
jQuery.ajaxSetup({
  converters: {
    "json pirate": function(obj) {
      if(!obj.name || typeof obj.hasParrot === "undefined")
      {
        throw "Not a valid Pirate object!";
      }
      else
      {
        return new Pirate(obj.name, obj.hasParrot);
      }
    }
  }
}
// Then use it!
$.ajax("http://example.com/getPirate", {
  data: {id: 20},
  dataType: "pirate",
  success: function(pirate){
    console.log(pirate instanceof Pirate); // Should be true
  }
});

Edit: If you really want to skip the step of converting to JSON, you could could replace "json pirate" above with "text pirate" and write your own parser for the raw text returned by the ajax call.