Live Demo: jQuery find() Method to Return All Descendant Elements.

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<!doctype html>
<html lang="en">
<head>
<title>jQuery find() Method to Return All Descendant Elements.</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(document).ready(function(){ 
    $('.myallbtn').click(function(){
        $("ul").find("*").css({"color":"orange","border":"1px solid red","padding":"5px","margin":"10px"});
    });
});
</script>
</head>
<body>
<h2>jQuery find() Method to Return All Descendant Elements.</h2>
<ul>
    <li><span>First</span> li element</li>
    <li>Second li element.</li>
    <li><span>Last</span> li element.</li>
</ul>
<button type="button" class="myallbtn">Click to Find All</button>
</body>
</html>              
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