JSFiddle - React, Tailwind, and code Playground

JavaScript

function Test(){
    var hello = "org";   
    
    this.getHello = function(){
        return hello;
    }
    
    this.setHello = function(value){
        return hello = value;
    }
}

var test = new Test();

console.log(test.getHello());
test.setHello('new org');
console.log(test.getHello());