Question

So when the Ajax call returns a JSON reply, I do :

oData = JSON.parse(sReply);

where

var oData = new cData();

function cData() {
    this.Email = "";
    this.Name = "";
    this.test = function () {
        alert("lol");
    }
}

The problem is, the JSON string only contains the email and the name variables, so when the oData = JSON.parse(sReply) happens, the function test gets overwritten and when I try to call the function it does not exist. Is there a way to avoid this? I may have many functions in there and other variables which I don’t want to transmit through JSON.

Answer 1

oData = JSON.parse(sReply); – This creates a JavaScript object. It doesn’t matter if oData was previously a cData object…you just re-assigned it.

You should be able to take your JSON response and manually assign its properties to an existing cData object:

var oData = new cData();
var response = JSON.parse(sReply);
oData.Email = response.Email;
oData.Name = response.Name;

Or you could loop through the properties:

for (var i in response)
    oData[i] = response[i];