<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.calendar{
width:300px;
height:400px;
background-color: blue;
margin: 0 auto;
position: relative;
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.active{color:red;}
.calendar li{
padding-right :30px;;
list-style: none;
cursor: pointer;
float: left;}
.text{
width:300px;
height:100px;
background-color: brown;
float: left;
text-align: center;
}
</style>
<script>
window.onload=function()
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var arr=[
'快过年了,新年快乐',
'快睡觉了,晚安',
'快开学了',
'块',
'吃饭',
'timi',
'play',
'sleep',
'happy',
'open',
'exciting',
'go'
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Otext.innerHTML='<h2>'+(this.index+1)+'月活动</h2><p>'+arr[this.index]+'</p>';
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</head>
<body>
<div id="tab" class="calendar">
<ul>
<li class="active"><h2>1</h2><p>JAN</p></li>
<li><h2>2</h2><p>FER</p></li>
<li><h2>3</h2><p>MAR</p></li>
<li><h2>4</h2><p>APR</p></li>
<li><h2>5</h2><p>MAY</p></li>
<li><h2>6</h2><p>JUN</p></li>
<li><h2>7</h2><p>JUL</p></li>
<li><h2>8</h2><p>AUG</p></li>
<li><h2>9</h2><p>SEP</p></li>
<li><h2>10</h2><p>OCT</p></li>
<li><h2>11</h2><p>NOV</p></li>
<li><h2>12</h2><p>DEC</p></li>
</ul>
<div class="text">
<h2>一月活动</h2>
<p>快过年了,新年快乐</p>
</div>
</div>
</body>
</html>