Is it possible to define an object containing objects?

Question

I have this object:

var a = {
 \"1\":{\"topicId\":1,
      \"subTopicId\":1,
      \"topicName\":\"x\",
      \"subTopicName\":\"x\"},
 \"2\":{\"topicId\":1,
            


        

Answer 1

Whoops, overlooked the typescript label.. see alternate answer for way to do it by parsing JSON (which could have been output by server, reading from config file, etc.). Here is how to do it in pure javascript:

Use an array property inside your object.

Then set each array element to an instance of the IData object.

var a = { Topics: [] }; // define container with empty Topics array

// add some topics
a.Topics[1] = { topicId: 1, subTopicId: 1, topicName: "x", subTopicName: "x" };
a.Topics[2] = { topicId: 1, subTopicId: 2, topicName: "x", subTopicName: "x" };
a.Topics[62] = { topicId: 10, subTopicId: 62, topicName: "x", subTopicName: "x" };

Then access the objects like this:

alert(a.Topics[1].topicName + " - " + a.Topics[1].subTopicName);