:animated selector

Select all elements that are in the progress of an animation at the time the selector is run.

Note: If you use a custom jQuery build without the effects module, the :animated selector will throw an error.

Because :animated is a jQuery extension and not part of the CSS specification, queries using :animated cannot take advantage of the performance boost provided by the native DOM querySelectorAll() method. To achieve the best performance when using :animated to select elements, first select the elements using a pure CSS selector, then use .filter(":animated").

jQuery( ":animated" )

version added: 1.2

Examples:

Change the color of any div that is animated.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>animated demo</title>
  <style>
  div {
    background: yellow;
    border: 1px solid #AAA;
    width: 80px;
    height: 80px;
    margin: 0 5px;
    float: left;
  }
  div.colored {
    background: green;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<button id="run">Run</button>
 
<div></div>
<div id="mover"></div>
<div></div>
 
<script>
$( "#run" ).click(function() {
  $( "div:animated" ).toggleClass( "colored" );
});
 
function animateIt() {
  $( "#mover" ).slideToggle( "slow", animateIt );
}
 
animateIt();
</script>
 
</body>
</html>

Links:

http://api.jquery.com/animated-selector

doc_jQuery

2016-03-27 13:47:55

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