灭绝老师的作业—敲代码加上倒计时做法 - 我的作业

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实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>灭绝师太老师第一堂课的作业1</title>
    <script  src="js/jq_3.3.1_mi.js"></script>
</head>
<style>
    .header{width:1000px; height:100px; background-color: brown; text-align: center;color: cornsilk;margin: 0 auto;}
    h1{line-height: 100px;}
    .banner{width:1080px; bor der: 3px solid red;margin: 0 auto;}
    .banner .box{ height: 250px;  width:250px; background-color: crimson; border-radius:250px; margin: 0 auto;}
    .banner h2{ line-height:250px; text-align:center; color: darkgray;font-size:20px;}
     button{font-size: 25px; text-align: center; width:180px; margin:10px; margin-left: 100px;color: darkgreen; background-color: ghostwhite;
}
    .qingkong{margin-left:950PX;}
    textarea{resize:none; border-radius:17px; outline:none;}
    p{  text-align:center; font-size:20px; color: brown; 
       font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
       }   
</style>
<body>
<div class="header">
    <h1>灭绝老师布置的作业一</h1>
</div>
<div class="banner">
    <div class="box">
        <h2>拿着我练习一下</h2>
    </div>
        <button id="btn">消失吧</button>
        <button class="btn">出来吧</button>
        <button id="bta">改变吧</button>    
</div>
<p>灭绝老师真的了不起</p>
 <button class="qingkong">把所有页面清空把</button>
<form>
    <label for="liuyan"> <h1>请留言吧</h1></label>
    <br>
   <textarea id="liuyan" cols="300" rows="20"></textarea>
</form>

</body>
<script>

    $('#btn').click(function(){
        $('.box').css('display','none')
    })

    $('.btn').click(function(){
        $('.box').show(1500);
    })
   /* $(':button').click(function(){
        $('.box').css('background-color','#015245');
    })
*/
    $('#bta').click(function(){
        $('.box').css('background-color','#015245');
    })

    $('p').mouseover(function(){
        $(this).css('background-color','#012535')
    })
    $('p').mouseleave(function(){
        $(this).css('background-color','#FFF')
    })

    $('.qingkong').click(function(){
        $('*').hide();
    })

    $('textarea').focus(function(){
        $(this).css("border","1px solid red");
    })
    $('textarea').blur(function(){
        $(this).css("border","1px solid #000");
    })
    



</script>
</html>

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实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>灭绝老师作业2-写时钟</title>
    <style>
    .jia{height:500px; width:1902px; background-color: blanchedalmond; margin: 0 auto;}
    h1,h2{ text-align: center;  li ne-height:500px; color: brown; text-shadow:0.5px 1px #333; font-weight:bold;}
    h1{padding-top: 230px;}
    </style>
    
    <script  src="js/jq_3.3.1_mi.js"></script>
</head>


<body>
    <div class="jia">
            <div>
                   <h1>2019年农历春节倒计时：</h1> <h2></h2>
            </div>
    </div>
    
</body>
<script>
   $(function(){
        function shi(){
            var d= Date.parse("Feb 05,2019");
            var date= new Date();
            var dd=date.getTime();
            var rd =  Math.floor((d - dd)/1000);
            var days = Math.floor(rd /86400);
            var hours = Math.floor(rd % 86400 / 3600);
            var minus = Math.floor(rd % 3600 / 60);
            var secos = Math.floor(rd % 60);
            $('h2').text(days+"天"+hours+"小时"+minus+"分钟"+secos+"秒");
        }  
        setInterval(shi,1000);     
   })
</script>
</html>

运行实例 »

点击 "运行实例" 按钮查看在线实例

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1 comments

红色熊猫 2019-01-23 10:20:49

你好这个运行实例是怎么弄的?

1 floor

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