JSFiddle - React, Tailwind, and code Playground

by Jay Lim

HTML

<div class="card">
  <div class="header">
    <h2>null과 undefined는 다른가?!</h2>
  </div>
  <div class="content">
    <span onclick="findOut()">alert(null == undefined);</span>
  </div>
</div>

CSS

.card {width: 180px; height: 100px; background: white; padding: 10px; margin: 15px; border: 1px #ededed solid}
.card .header h2 {font-size: 14px; margin-bottom: 20px;}
.card .content {font-size: 12px; text-align: center}
.card .content span {padding: 6px 8px; background: #333; color: white; border-radius: 5px;}
.card .content span:hover {cursor: pointer;}

JavaScript

findOut = function() {
	alert(null == undefined);
}