Json Object Value Based On Other Object Value

I need to find a value based on another object value json = {[{ID:'1',city:'Atlanta'},{ID:'2',city:'New York'}]} and so forth. I need to find the value of a city where ID is x. Is

Solution 1:

You could format it as follows

vardata = {
    id: "city",
    1: "Atlanta",
    2: "New York",
    6: "New Jersy",
    24: "San Diego"
};

At which point, access can be done using the ID and the array access operator

console.log(data[2], data[24]);

yields

New York San Diego

Solution 2:

You could consider using JSONPath, JSONQuery, jLinq, etc... although under-the-hood there's a very good chance they will use loops.

Solution 3:

Why don't you store this like an array

array = ["Atlanta", "New York"];

Calling array[0] will return "Atlanta".

If you have to use json you will need to use loops to do what you want.