Hi, I got a question regarding JSON as datasource- I understand that eval on a JSON String creates the appropriate objects in JS. But I would like to use JSON to supply data to already defined prototpye objects. I try to give an example. I e.g. got: address.prototype = { firstname: null; lastname: null; email: null; //imagine a lot more properties here getfirstname: function () { return this.firstname; }, checkadress: function() {//some code here;} } Imagine address has a lot of properties and methods. Now I want to use JSON to create a new address-object and initialize the properties with the data supplied in the JSON Object. How can I do this without having to write a lot of code? What would the JSON Object have to look like? Best, Hendrik