HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery.removeData official</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 480px; }
    div { margin: 2px; color: #2563eb; }
    span { color: #dc2626; font-weight: 600; }
    button { margin-top: 12px; padding: 8px 14px; }
  </style>
</head>
<body>
  <div>Data target</div>
  <p>value1 before creation: <span></span></p>
  <p>value1 after creation: <span></span></p>
  <p>value1 after removal: <span></span></p>
  <p>value2 after removal: <span></span></p>
  <button type="button" id="run">Run demo</button>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $( "#run" ).on( "click", function () {
      var div = $( "div" )[ 0 ];
      jQuery.removeData( div );
      $( "span" ).eq( 0 ).text( "" + $( "div" ).data( "test1" ) );
      jQuery.data( div, "test1", "VALUE-1" );
      jQuery.data( div, "test2", "VALUE-2" );
      $( "span" ).eq( 1 ).text( "" + jQuery.data( div, "test1" ) );
      jQuery.removeData( div, "test1" );
      $( "span" ).eq( 2 ).text( "" + jQuery.data( div, "test1" ) );
      $( "span" ).eq( 3 ).text( "" + jQuery.data( div, "test2" ) );
    });
  </script>
</body>
</html>

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jQuery.removeData() — official demo (Try It)