Примеры для jQuery.data()

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Store then retrieve a value from the div element.

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery.data demo</title>
  <style>
  div {
    color: blue;
  }
  span {
    color: red;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<div>
  The values stored were
  <span></span>
  and
  <span></span>
</div>
 
<script>
var div = $( "div" )[ 0 ];
jQuery.data( div, "test", {
  first: 16,
  last: "pizza!"
});
$( "span:first" ).text( jQuery.data( div, "test" ).first );
$( "span:last" ).text( jQuery.data( div, "test" ).last );
</script>
 
</body>
</html>

Демонстрация:

Get the data named "blah" stored at for an element.

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery.data demo</title>
  <style>
  div {
    margin: 5px;
    background: yellow;
  }
  button {
    margin: 5px;
    font-size: 14px;
  }
  p {
    margin: 5px;
    color: blue;
  }
  span {
    color: red;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<div>A div</div>
<button>Get "blah" from the div</button>
<button>Set "blah" to "hello"</button>
<button>Set "blah" to 86</button>
<button>Remove "blah" from the div</button>
<p>The "blah" value of this div is <span>?</span></p>
 
<script>
$( "button" ).click( function() {
  var value,
    div = $( "div" )[ 0 ];
  switch ( $( "button" ).index( this ) ) {
  case 0 :
    value = jQuery.data( div, "blah" );
    break;
  case 1 :
    jQuery.data( div, "blah", "hello" );
    value = "Stored!";
    break;
  case 2 :
    jQuery.data( div, "blah", 86 );
    value = "Stored!";
    break;
  case 3 :
    jQuery.removeData( div, "blah" );
    value = "Removed!";
    break;
  }
  $( "span" ).text( "" + value );
});
</script>
 
</body>
</html>

Демонстрация: