JSFiddle - React, Tailwind, and code Playground

by Joseph Chiang

HTML

<input id="username" value="Tellis">

JavaScript

var greeting = function (username) {
    return "Hello! " +  username;
};

var input = document.getElementById("username");

input.onblur = function () {
    var value = input.value;
    var msg = greeting(value);
    alert(msg);
};