JSFiddle - React, Tailwind, and code Playground

HTML

<button id="btn-0">Button 1!</button>
<button id="btn-1">Button 2!</button>
<button id="btn-2">Button 3!</button>

JavaScript

var prizes = ['A Unicorn!', 'A Hug!', 'Fresh Laundry!'];
for (var btnNum = 0; btnNum < prizes.length; btnNum++) {
  (function(btnNum) {
    document.getElementById('btn-' + btnNum).onclick = function() {
      alert(prizes[btnNum]);
    };
  })(btnNum);
}