The jQuery.find() method will return the descendant elements of the selected element.
You can try to run the following code to learn how to work with jQuery.find() method,
<!DOCTYPE html> <html> <head> <style> .myclass * { display: block; border: 2px solid red; padding: 2px; margin: 10px; color: red; } </style> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <script> $(document).ready(function(){ $("ol").find("span").css({"background-color": "yellow", "border": "5px solid green"}); }); </script> </head> <body class="myclass">body <div style="width:500px;">div <ol>ol <li>li <span>The descendant element</span> </li> </ol> </div> </body> </html>