Dynamically generate span tags based on the number of li tags, and clicking the span tag will also display the corresponding li content
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="css/ 3.css">
</head>
<body>
<ul id="box">
<li>item0</li>
< ;li>item1</li>
<li>item2</li>
<li>item3</li>
</ul>
<div id="spans ">
</div>
</body>
<script src="js/js3.js"></script>
</ html>
