Skip welcome & menu and move to editor
Welcome to JS Bin
Load cached copy from
 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <h1>Asymetric transition</h1>
  <button>Trigger</button>
  <div class="target closed"></div>
</body>
</html>
 
.target {
  width: 200px;
  height: 200px;
  background: green;
}
.target.open {
  opacity: 1;
  transition: opacity 1s;
}
.target.closed {
  opacity: 0;
}
 
document.querySelector('button').addEventListener('click', (evt) => {
  document.querySelector('.target').classList.toggle('open');
  document.querySelector('.target').classList.toggle('closed');
});
Output 300px

You can jump to the latest bin by adding /latest to your URL

Dismiss x
public
Bin info
andruudpro
0viewers