JSFiddle - React, Tailwind, and code Playground

JavaScript

var obj = {};

var symbol1 = Symbol("1");
Object.defineProperty(obj, symbol1, {
    value: "a",
});
Object.defineProperty(obj, Symbol("2"), {
    value: "b",
});
Object.defineProperty(obj, Symbol("1"), {
    value: "c",
});
obj.x = 3;

document.body.addEventListener('click', function(){
    console.log(objzzz);
});

document.body.innerHTML = 'click';