JSFiddle - React, Tailwind, and code Playground

by Dmitri Ganenco

JavaScript

const arr1 = {action:'test',id:500,pickid: 43786573};
const arr2 = {action:'test',id:500,pickid: 43786573,previous: 'value1'};

const res = Object.assign({}, arr1, arr2);

console.log(res);