JSFiddle - React, Tailwind, and code Playground

JavaScript

var json_original = {one:'one', two:'two'}

var json_new = json_original;

console.log(json_original);
console.log(json_new);

json_original.one = 'two';
json_original.two = 'one';

console.log(json_original);
console.log(json_new);