表单-焦点聚焦改变样式 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
        /* input:focus,textarea:focus{
            border: 1px solid #f00;
            background: #fcc
        } */
        .focus{
            border: 1px solid #f00;
            background: #fcc
        }
    </style>
</head>
<body>
    <form action="#" method="POST" id="regForm">
        <fieldset>
            <legend>个人基本信息</legend>
            <div>
                <label for="username">名称：</label>
                <input type="text" id="username">
            </div>
            <div>
                <label for="pass">密码：</label>
                <input type="password" id="pass">
            </div>
            <div>
                <label for="msg">详细信息：</label>
                <textarea id="msg"></textarea>
            </div>
        </fieldset>
    </form>
</body>
<script type="text/javascript" src="js/jquery-3.2.1.js"></script>
<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
    $(document).ready(function(){
        $(":input").focus(function(){
            $(this).addClass('focus');
        }).blur(function(){
            $(this).removeClass('focus')
        })
    })
</script>
</html>

 

posted @ 2017-08-23 17:09  Jinsuo  阅读(755)  评论(0)    收藏  举报