How to make a property in a javascript object a variables value

Question

I am curious if it is possible to assign a variables value to be a properties name in a Javascript object. For example, If I want to make objects where the key is a timestamp.

const timestamp = Date.now().toString();
const myObject = {
    timestamp: {
        data: "data value",
        data2: 2,
        . . .
        }
};

and output being something like

1686151152733: { data: "data value", data2: 2, ... }

Answer 1

Just use the bracket notation, also known as a Computed Property Name

const timestamp = Date.now().toString();
const myObject = {
    [timestamp]: {
        data: "data value",
        data2: 2,
    }
};

console.log(myObject);

Answer 2

If you want to dynamically assign your timestamp as an object key, you'll need to use the dynamic access to access a key. (access a property dynamically with brackets)

you'd be able to do like this:

const timestamp = Date.now().toString();
const myObject = {
    [timestamp]: {
        data: "data value",
        data2: 2,
        // ...
    }
};

Answer 3

I apologize if I didn't fully understand your question. Here is a code snippet that might be helpful.

const timestamp = Date.now().toString();
const myObject = {
    [timestamp]: {
        data: "data value",
        data2: 2,
        },
        
        
};



for (var key in myObject) {
  console.log(key, myObject[key]);
}

Answer 4

Yes, you need to do it like this:

const myObject = {
    [timestamp]: {
        data: "data value",
        data2: 2,
        . . .
        }
};