JSFiddle - React, Tailwind, and code Playground

JavaScript

function firstCallme(iWantToBePassed) {
    callbackFun(iWantToBePassed);
}

function callbackFun(dataFromPostFun) {
    alert(dataFromPostFun);
}

$(function() {
    var hel = "Hello";
    firstCallme(hel);
});