<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../js/jquery-3.5.1.js"></script>
    <script>
        $(function () {
            //属性操作
            //获取属性，$().attr("属性名");
           $("#btn1").click(function () {
               alert($("img").attr("src"));
           });

           $("#btn2").click(function () {
               alert($("img").attr("alt"));
           });
        });
    </script>
</head>
<body>
    <img src="img/jquery.png" alt="jquery"><br>
    <input type="button" id="btn1" value="获取src属性">
    <input type="button" id="btn2" value="获取alt属性">
</body>
</html>