Test 'input' event
HTML
<input id="my-text-box"></input>
<input id="my-text-box2"></input>
<div id="messages" style="white-space:pre;"></div>JavaScript
var input = document.querySelector('#my-text-box');
var input2 = document.querySelector('#my-text-box2');
var messages = document.querySelector('#messages');
document.addEventListener('input', function(target){
console.log(target)
});