JSFiddle - React, Tailwind, and code Playground

HTML

<button title="myTitle">test button</button>

JavaScript

window.onload = myPageIsReady;

function getMyTitle() {
    alert(this.title)
};

function myPageIsReady() {
    var myList = document.getElementsByTagName("button");
    for (var i = 0; i < myList.length; i++) {
        myList[i].onclick = getMyTitle;
    };
};