JSFiddle - React, Tailwind, and code Playground

JavaScript

var a = {
    get aa() {
        return 'aa';
    }
}, arr = [];

Object.defineProperty(
    a,
    'bb',
    {
        get: function() {
            return 'bb';
        },
    enumerable: true
    }
);

for(p in a) {
    arr.push(p + ': ' + a[p]);
}
alert(arr.join("\n"));