Question

I can use get for individual properties, like this:

function MyObjectConstructor() {
    this._internalValueOne = 'foo';
    this._internalValueTwo = 'bar';
}

MyObjectConstructor.prototype = {
    get usefulValueOne() {
        return this._internalValueOne + 'baz';
    },
    get usefulValueTwo() {
        return this._internalValueTwo + 'baz';
    }
}

var myObject = new MyObjectConstructor();

Now myObject.usefulValueOne gives 'foobaz' and myObject.usefulValueTwo gives 'barbaz'. Can I somehow use get to make sure that myObject (and any other object based on MyObjectConstructor) also returns an object like {usefulValueOne: 'foobaz', usefulValueTwo: 'barbaz'}? Or is there some other preferred way to do this?

Naturally I also wonder the same thing for set.

Answer 1

you can use this:

function MyObjectConstructor() {
    this._internalValueOne = 'foo';
    this._internalValueTwo = 'bar';
}

MyObjectConstructor.prototype = {
    get usefulValueOne() {
        return this._internalValueOne + 'baz';
    },
    get usefulValueTwo() {
        return this._internalValueTwo + 'baz';
    },
    get showProt(){
        var B = {};
        for (var i in this){
            if (i.hasOwnProperty && (i !== 'showProt')){
                B[i] = this[i];
           }
        }
        return B;
    }
}
var myObject = new MyObjectConstructor();

now myObject.showProp will show you an object with all properties (including privates, you should remove them)