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如何通過(guò)JavaScript、css、H5實(shí)現(xiàn)簡(jiǎn)單的tab欄切換和復(fù)用功能

 更新時(shí)間：2022年11月28日 10:15:51   作者：小余努力搬磚  
tab切換在項(xiàng)目中也算是常用技術(shù),一般實(shí)現(xiàn)tab切換都用js或者jq實(shí)現(xiàn),下面這篇文章主要給大家介紹了關(guān)于如何通過(guò)JavaScript、css、H5實(shí)現(xiàn)簡(jiǎn)單的tab欄切換和復(fù)用功能的相關(guān)資料,需要的朋友可以參考下

一、效果展示

二、實(shí)現(xiàn)的大致原理

1.我們先通過(guò)css 和h5布局得到最基本的tab欄樣式（有代碼參考）

2.在獲得樣式，給我們所需要點(diǎn)擊的目標(biāo)設(shè)置監(jiān)聽(tīng)事件，在獲取節(jié)點(diǎn)，設(shè)置一個(gè)自定義的節(jié)點(diǎn)屬性index,通過(guò)它在獲取點(diǎn)擊出現(xiàn)樣式的節(jié)點(diǎn)，在經(jīng)過(guò)尋找元素，設(shè)置全取消，點(diǎn)擊相應(yīng)的節(jié)點(diǎn)出現(xiàn)的效果。這里獲取節(jié)點(diǎn)方式，都是通過(guò)點(diǎn)擊元素獲取父元素，在獲得子元素，同級(jí)獲得兄弟元素，在獲取兄弟元素的子元素（籠統(tǒng)的解釋?zhuān)?xì)節(jié)部分看代碼段的解釋?zhuān)?/strong>

三、H5的布局

沒(méi)有特殊的地方，都是基本的寫(xiě)法，只要給定一定的選擇器就可以了

    <div class="tab">
        <div class="nav">
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  class="hover">公司新聞</a>
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >公司動(dòng)態(tài)</a>
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >行業(yè)新聞</a>
        </div>
        <div class="nav_con"> 
            <div>內(nèi)容</div>
            <div>動(dòng)態(tài)</div>
            <div>行業(yè)</div>
        </div>
    </div>
 
    <div class="tab">
        <div class="nav">
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  class="hover">大學(xué)</a>
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >中學(xué)</a>
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >小學(xué)</a>
        </div>
        <div class="nav_con">
            <div>大學(xué)內(nèi)容</div>
            <div>中學(xué)內(nèi)容</div>
            <div>小學(xué)內(nèi)容</div>
        </div>
    </div>

四、CSS樣式

為了得到視屏中的樣式，需要設(shè)置最基本的效果，通過(guò)浮動(dòng)，是元素在同一行，浮動(dòng)會(huì)脫離文檔流，可以給a標(biāo)簽設(shè)置寬高，可以設(shè)置一些外邊距，使得好看一些。注意設(shè)置出現(xiàn)內(nèi)容的消失，我們默認(rèn)只出現(xiàn)第一個(gè)。

        a{
            text-decoration: none;
            width: 180px;
            height: 30px;
            line-height: 30px;
            text-align: center;
            color: #666;
            float: left;
            margin-right: 15px;
        }
        .nav a{
            background-color: beige;
        }
        .nav a.hover{
            background-color: blue;
        }
        .nav_con div:first-child~div{
            display: none;
        }
        .nav::after{
            content: '';
            display: block;
            clear: both;
        }
    .nav_con{
        margin-bottom: 50px;
    }

五、JS代碼內(nèi)容

按照順序來(lái)，流程如下

獲取元素

通過(guò)委派給父親添加監(jiān)聽(tīng)事件

先獲得當(dāng)前的父節(jié)點(diǎn)，在通過(guò)父節(jié)點(diǎn)獲得所有的子節(jié)點(diǎn)

設(shè)置排他思想

給每一個(gè)子節(jié)點(diǎn)加上一個(gè)自定義屬性 index

獲取當(dāng)前被點(diǎn)擊的nav a上面的屬性index

獲取當(dāng)前元素的父級(jí)元素，在獲得父級(jí)的兄弟，在找到子元素

當(dāng)前nav_con 顯示內(nèi)容

當(dāng)前節(jié)點(diǎn)獲得hover樣式

 let navNodes = document.querySelectorAll('.nav');
         for(let i=0;i<navNodes.length;i++){
        //通過(guò)委派給父親添加監(jiān)聽(tīng)事件
    navNodes[i].addEventListener('click',function(e){
        //先獲得當(dāng)前的父節(jié)點(diǎn)，在通過(guò)父節(jié)點(diǎn)獲得所有的子節(jié)點(diǎn)
 let navs = e.target.parentNode.children;
        //設(shè)置排他思想
    for(let j=0;j<navs.length;j++){
    navs[j].className='';
        //給每一個(gè)子節(jié)點(diǎn)加上一個(gè)自定義屬性 index
    navs[j].setAttribute("index",j)
}
        //獲取當(dāng)前被點(diǎn)擊的nav a上面的屬性index
 let thisIndex = e.target.getAttribute("index");
        //獲取當(dāng)前元素的父級(jí)元素，在獲得父級(jí)的兄弟，在找到子元素
 let nav_cons = e.target.parentNode.nextElementSibling.children;
        for(let j=0;j<nav_cons.length;j++){
        nav_cons[j].style.display = "none";
}
        //當(dāng)前nav_con 顯示內(nèi)容
        nav_cons[thisIndex].style.display="block"
 
       //當(dāng)前節(jié)點(diǎn)獲得hover樣式
        e.target.className = "hover"
})
}

六、完整代碼

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        a{
            text-decoration: none;
            width: 180px;
            height: 30px;
            line-height: 30px;
            text-align: center;
            color: #666;
            float: left;
            margin-right: 15px;
        }
        .nav a{
            background-color: beige;
        }
        .nav a.hover{
            background-color: blue;
        }
 
        .nav_con div:first-child~div{
            display: none;
        }
        .nav::after{
            content: '';
            display: block;
            clear: both;
        }
    .nav_con{
        margin-bottom: 50px;
    }
    </style>
</head>
<body>
    <div class="tab">
        <div class="nav">
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  class="hover">公司新聞</a>
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >公司動(dòng)態(tài)</a>
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >行業(yè)新聞</a>
        </div>
        <div class="nav_con"> 
            <div>內(nèi)容</div>
            <div>動(dòng)態(tài)</div>
            <div>行業(yè)</div>
        </div>
    </div>
 
    <div class="tab">
        <div class="nav">
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  class="hover">大學(xué)</a>
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >中學(xué)</a>
            <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >小學(xué)</a>
        </div>
        <div class="nav_con">
            <div>大學(xué)內(nèi)容</div>
            <div>中學(xué)內(nèi)容</div>
            <div>小學(xué)內(nèi)容</div>
        </div>
    </div>
 
 
 
    <script>
        let navNodes = document.querySelectorAll('.nav');
         for(let i=0;i<navNodes.length;i++){
        //通過(guò)委派給父親添加監(jiān)聽(tīng)事件
            navNodes[i].addEventListener('click',function(e){
                //先獲得當(dāng)前的父節(jié)點(diǎn)，在通過(guò)父節(jié)點(diǎn)獲得所有的子節(jié)點(diǎn)
                let navs = e.target.parentNode.children;
                for(let j=0;j<navs.length;j++){
                    navs[j].className='';
                    //給每一個(gè)子節(jié)點(diǎn)加上一個(gè)自定義屬性 index
                    navs[j].setAttribute("index",j)
                }
                //獲取當(dāng)前被點(diǎn)擊的nav a上面的屬性index
                let thisIndex = e.target.getAttribute("index");
                //獲取當(dāng)前元素的父級(jí)元素，在獲得父級(jí)的兄弟，在找到子元素
                let nav_cons = e.target.parentNode.nextElementSibling.children;
                for(let j=0;j<nav_cons.length;j++){
                    nav_cons[j].style.display = "none";
                }
                //當(dāng)前nav_con 顯示內(nèi)容
                nav_cons[thisIndex].style.display="block"
 
                //當(dāng)前節(jié)點(diǎn)獲得hover樣式
                e.target.className = "hover"
            })
         }
 
 
 
    </script>
</body>
</html>

總結(jié)

到此這篇關(guān)于如何通過(guò)JavaScript、css、H5實(shí)現(xiàn)簡(jiǎn)單的tab欄切換和復(fù)用功能的文章就介紹到這了,更多相關(guān)JS css H5實(shí)現(xiàn)tab欄切換和復(fù)用內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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