使用es6的class方法实现tab切换

最新推荐文章于 2023-04-11 21:15:41 发布

HAI6545

最新推荐文章于 2023-04-11 21:15:41 发布

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分类专栏： JavaScript案例文章标签： javascript css html

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<style>
.tab{
    width: 600px;
    height: 300px;
    border:1px solid #000;
    margin: 50px auto;
}
.tab ul, .tab ol{
    list-style-type: none;
    padding: 0;
    margin: 0;
}
.tab ul{
    height: 50px;
    background-color: #eee;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}
.tab ul li{
    width: 100px;
    height: 30px;
    background-color: #abcdef;
    text-align: center;
    line-height: 30px;
}
.tab ul li.active{
    background-color: #f00;
    color: #fff;
}
.tab ol{
    width: 600px;
    height: 250px;
}
.tab ol li a img{
    width: 600px;
    height: 250px;
}
.tab ol li{
    display:none;
}
.tab ol li.active{
    display:block;
}
.tab{
    cursor: pointer;
}
</style>
<body>
<div class="tab">
    <ul>
        <li class="active">向日葵</li>
        <li>郁金香</li>
        <li>红玫瑰</li>
    </ul>
    <ol>
        <li class="active">
            <a href="./images/1.jfif">
                <img src="./images/1.jfif" alt="">
            </a>
        </li>
        <li>
            <a href="./images/2.webp">
                <img src="./images/2.webp" alt="">
            </a>
        </li>
        <li>
            <a href="./images/3.jfif">
                <img src="./images/3.jfif" alt="">
            </a>
        </li>
    </ol>
</div>
</body>
<script>
class Tab{
    constructor(classname){
        // 添加属性
        this.container = document.querySelector('.'+classname);
        this.ulis = this.container.querySelectorAll('ul li')
        this.olis = this.container.querySelectorAll('ol li')
    }
    // 定义方法 - 绑定事件
    init(){
        for(var i=0;i<this.ulis.length;i++){
            this.ulis[i].onclick = this.click(i)
        }
    }
    click(index){
        return () => this.tab(index)
    }
    tab(index){
        for(var i=0;i<this.ulis.length;i++){
            this.ulis[i].className = ''
            this.olis[i].className = ''
        }
        this.ulis[index].className = 'active'
        this.olis[index].className = 'active'
    }
}

var tab = new Tab('tab')
tab.init()
</script>
</html>