JSFiddle - React, Tailwind, and code Playground

JavaScript

var exampleObj = {
  arr:["exampleOne","exampleTwo"],
get:function (exNbr){
if (exNbr > 0)
    return this.arr[exNbr-1];
return null;
}};

console.log(`My result = ${exampleObj.get(0)}`); //null
console.log(`My result = ${exampleObj.get(1)}`); //exampleOne
console.log(`My result = ${exampleObj.get(2)}`); //exampleTwo
console.log(`My result = ${exampleObj.get(3)}`); //undefined