JSFiddle - React, Tailwind, and code Playground

by CommandLineDesign

JavaScript

function addNumbers(data) {
    data.container.firstNumber++ 
    console.log(data);
    //console.log(data.container);
    data.container.firstNumber++
}

var numberData = {
    container : {
       "firstNumber": 1
    }
};

console.log(numberData);
//console.log(numberData.container);
addNumbers(numberData);