(编辑:jimmy 日期: 2024/12/24 浏览:2)
本文实例为大家分享了JavaScript实现多层颜色选项卡嵌套的具体代码,供大家参考,具体内容如下
这是学JavaScript时候的一个作业,如果没有思路还是挺有难度的,但是思路正确的话一步一步来就很简单做出来了。
实现效果
HTML部分代码
<div class="box" id="box"> <ul id="leftBox"> <li class="active">a</li> <li>b</li> <li>c</li> <li>d</li> </ul> <div id="rightBox"> <div id="rightBox1" class="active"> <a href="#" >a1</a> <ul class="tabUl"> <li class="hover">a1</li> <li>a2</li> <li>a3</li> <li>a4</li> </ul> </div> <div id="rightBox2"> <a href="#" >b1</a> <ul class="tabUl"> <li class="hover">b1</li> <li>b2</li> <li>b3</li> <li>b4</li> </ul> </div> <div id="rightBox3"> <a href="#" >c1</a> <ul class="tabUl"> <li class="hover">c1</li> <li>c2</li> <li>c3</li> <li>c4</li> <li>c5</li> <li>c6</li> </ul> </div> <div id="rightBox4"> <a href="#" >d1</a> <ul class="tabUl"> <li class="hover">d1</li> <li>d2</li> <li>d3</li> <li>d4</li> </ul> </div> </div> </div>
css部分代码
<style> * { margin: 0px; padding: 0px; list-style: none; text-decoration: none; } .box { width: 800px; border: 1px solid #000000; margin: 20px auto; background: blue; } .box:after { content: ""; display: block; clear: both; } #leftBox { float: left } #rightBox { float: left; } #leftBox li { width: 200px; height: 89px; background: red; margin-bottom: 2px; color: #fff; font: 50px/89px "黑体"; text-align: center; } #rightBox div { display: none; } #rightBox .active { display: block; } #rightBox a { display: block; width: 600px; height: 325px; background: #0F0; font-size: 100px; color: #000; text-align: center; text-decoration: none; line-height: 360px; } .tabUl { display: table; width: 100%; } .tabUl li { display: table-cell; background: #909; color: #fff; font-size: 20px; text-align: center; height: 40px; line-height: 40px; border-right: 2px solid #03C; cursor: pointer; } .tabUl li.hover { background: #fff; color: #000; } #leftBox .active { background: yellow; color: #000; } </style>
JavaScript实现代码
思路:鼠标移入左边的每个li后,都会改变他的颜色,所以只需要改变class名,同时右边也会显示对于的div,有对应的话一般都会用到自定义索引值和this…
<script> /* 点击左边的li后,所点击li加上class名,其它清除所有,然后右边对应索引值的div也加上class=active,所以要用到this */ //获取元素 var lUl = document.getElementById('leftBox') var rUl = document.getElementById('rightBox') var lLi = lUl.getElementsByTagName('li') var oDiv = rUl.getElementsByTagName('div') //改变左边样式 for (var i = 0; i < lLi.length; i++) { //自定义索引 lLi[i].index = i lLi[i].onmouseenter = function () { //清空所有classname for (var j = 0; j < lLi.length; j++) { lLi[j].className = '' oDiv[j].className = '' } //给相应的li添加上classname this.className = 'active' oDiv[this.index].className = 'active' } } //右边 for (var k = 0; k < oDiv.length; k++) { fn(oDiv[k]) } function fn(parent) { //获取用到的元素 var rLi = parent.getElementsByTagName('li') var oa = parent.getElementsByTagName('a')[0] for (var i = 0; i < rLi.length; i++) { rLi[i].onmouseenter = function(){ for (j = 0; j < lLi.length; j++) { rLi[j].className = '' } this.className = 'hover' //把li标签中的文字传到a标签中 oa.innerHTML = this.innerHTML } } } </script>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。