find all ids for siblings of a given class jquery code example

Example 1: jquery siblings

$( "li.third-item" ).siblings().css( "background-color", "red" );

Example 2: siblings jquery

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>siblings demo</title>
  <script src="https://code.jquery.com/jquery-3.4.1.js"></script>
</head>
<body>
 
<div><span>Hello</span></div>
<p class="selected">Hello Again</p>
<p>And Again</p>
 
<script>
$( "p" ).siblings( ".selected" ).css( "background", "yellow" );
</script>
 
</body>
</html>