JSFiddle - React, Tailwind, and code Playground

by brecht

HTML

<div id="register">
  <h1>報名系統</h1>
  <div>目前有<strong>0</strong>人報名</div>
  <button>我要報名</button>
</div>

JavaScript

var counter = $('#register div strong');

$('#register button').click(function(){
     var counterValue = counter.text();
    counter.text(++counterValue);
});