使用一组键 Javascript 访问 JSON 对象

Question

I need to access into myObject using a generic function.

Data:

myObject = {
    "name": "Caroline",
    "number": 32,
    "country": {
        "province": {
            "city": {
                "NY": 67989876,
                "Boston": 454346,
            }
        }
    }
}

myArray = ["country", "province", "city"]

The solution would be:

myObject["country"]["province"]["city"]

I want rewrite after myObject, then the solution can not be a copy

myObject["country"]["province"]["city"] = "New datas"

Answer 1

var data = myObject;
for (var i in myArray) {
    data = data[myArray[i]];
}

alert(data);

Fiddle https://jsfiddle.net/g2uyb8rn/

Shorter version by @JeremyThille is:

var data = myObject;
for (let i of myArray) data = data[i];

alert(data);