jQuery随机切换图片的小例子

时间:2020-05-13 人气:1

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <style type="text/css">
    img
    {
       width:200px; height:200px;
        }
    </style>
    <script src="jquery-1.9.1.js" type="text/javascript"></script>
    <script type="text/javascript">
        $(function () {
            $('#btn1').click(function () {
                var num = Math.floor(Math.random() * 8 + 1);
             $('img').attr('src','picture/'+num+'.jpg')
            })
        })
    </script>
</head>
<body>
<img src="picture/1.jpg" id="img1" />
<input id="btn1" type="button" value="变换" />
</body>
</html>

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