Question

I have a struct in JavaScript

    settings = {
        "type-1": {
            "setting-1": true,
            "setting-2": 2
         }
        "type-2": {
            "setting-3": "value",
         }
    };

I can modify the items:

settings["type-1"]["setting-1"] = false;

But how can I add a new item in this struct?

Trying

settings["type-new"]["setting-100"] = "new one";

But settings[“type-new”] is undefined. So how to add a new one?

Answer 1

You need to set settings[“type-new”] to an object first.

settings["type-new"] = {};
settings["type-new"]["setting-100"] = "new one";