jQuery addClass example

Change class name on click in jQuery

by bryiantan

HTML

<div class="button">
  <button type="button" class="btn" id="btn" onclick="incrementer()">0</button>
</div>

JavaScript

var buttonTarget = document.getElementsByClassName("btn")[0];
var counter = 1;

function incrementer(){
document.getElementById("btn").innerHTML = counter.toString();
  //buttonTarget.innerHTML  = counter.toString();
  counter++;
  return counter;
}