Return multiple values in JavaScript?

I am trying to return two values in JavaScript. Is this possible?

var newCodes = function() {  
    var dCodes = fg.codecsCodes.rs;
    var dCodes2 = fg.codecsCodes2.rs;
    return dCodes, dCodes2;
};

No, but you could return an array containing your values:

function getValues() {
    return [getFirstValue(), getSecondValue()]
}

Then you can access them like so:

const [first, second] = getValues()

This is called destructuring assignment and is supported by every major JS environment. It's equivalent to the following:

const values = getValues()
const first = values[0]
const second = values[1]

You can also return an object if you want to assign a name to each value:

function getValues() {
    return {
        first: getFirstValue(),
        second: getSecondValue(),
    }
}

And to access them:

const {first, second} = getValues()

Which is the same as:

const values = getValues()
const first = values.first
const second = values.second

It is highly recommended to return an object instead of an array unless the values make sense as a simple tuple, e.g. a coordinate pair [x, y]. With an array, it's easy to forget which value is which, it's harder to add more values later, and it's marginally more difficult to correctly type with TypeScript or JSDoc.

Stack Overflow Q#2917175, score: 1900