python : HTML+CSS (定时器轮寻)

时间：2021-05-21 08:50:27

定时器轮寻

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

<div id="a"> 北京欢迎您，为你开天辟地</div>

<script>

    function func() {

//z 根据Id获取标签的内容

        var tag = document.getElementById('a');

        var content = tag.innerText;

        //获得标签内部的内容

        var f = content.charAt(0);

        var l = content.substring(1, content.length);

        var new_content = l+f;

        tag.innerText = new_content;

    }

    //设置定时器

    setInterval('func()', 500);

</script>

</body>

</html>

定时器轮寻

弹出框

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"

        "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

     <meta charset="UTF-8">

    <!--定义一下我是什么语言-->

    <title>Title</title>

</head>

<body>

<input  type="text"/>

<input id="user" type="button" value="点我" onclick="dianji()"/>

<script >

    function dianji() {

      var i=document.getElementById('user')

        alert(i.value)

    }

</script>

</body>

</html>

弹出框

跑马灯

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"

        "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

    <title>Title</title>

</head>

<body>

<h1 id ='res'>有没有那么一首歌，会让我突然想起你</h1>

<script>

    function f1() {

        var i=document.getElementById('res');

        var content=i.innerText;

        var f=content.charAt(0);

        var d=content.substring(1,content.length);

       var  new_content=d+f;

        i.innerText=new_content;

    }

    setInterval('f1()',500)

</script>

</body>

</html>

跑马灯

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