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前端之tab切換案例

Tab欄切換

1. tab欄-案例1

  • tab欄分析

  • li裡面的分析

  • js實現隱藏與顯示

    排他思想:

    1. 所有元素全部清除樣式(幹掉其他人)
    2. 給當前元素設定樣式 (留下我自己)
    3. 注意順序不能顛倒,首先幹掉其他人,再設定自己

    我的思路:

程式碼實現:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <
title
>
Document</title> <style> * { margin: 0; padding: 0; } li { list-style: none; } a { text-decoration: none; color: #666; } .vertical-tab {
width: 980px; margin: 100px auto; } .vertical-tab .nav { width: 200px; list-style: none; } .vertical-tab .nav-tabs1 { float: left; border-right: 3px solid #e7e7e7; } .vertical-tab .nav-tabs2
{ float: right; border-left: 3px solid #e7e7e7; } .vertical-tab li a { display: block; padding: 10px 20px; text-align: center; text-transform: uppercase; letter-spacing: 1px; font-size: 18px; font-weight: 700; } .vertical-tab .active { color: #198df8; } .vertical-tab .tabs { width: 500px; float: left; } .vertical-tab .tab-content { padding: 10px 20px; text-transform: uppercase; letter-spacing: 1px; } .vertical-tab .tab-content h3 { color: #333; margin: 0 0 10px 0; } .vertical-tab .tab-content p { font-size: 12px; } .vertical-tab .hidden { display: none; }
</style> </head> <body> <div class="vertical-tab"> <ul class="nav nav-tabs1"> <li><a href="javascript:;" class="active" index="1">section 1</a></li> <li><a href="javascript:;" index='2'>section 2</a></li> <li><a href="javascript:;" index="3">section 3</a></li> </ul> <div class="tab-content tabs"> <div class="tab-content1"> <h3>section 1</h3> <p>content 1</p> </div> <div class="tab-content1 hidden"> <h3>section 2</h3> <p>content 2</p> </div> <div class="tab-content1 hidden"> <h3>section 3</h3> <p>content 3</p> </div> <div class="tab-content1 hidden"> <h3>section 4</h3> <p>content 4</p> </div> <div class="tab-content1 hidden"> <h3>section 5</h3> <p>content 5</p> </div> <div class="tab-content1 hidden"> <h3>section 6</h3> <p>content 6</p> </div> </div> <ul class="nav nav-tabs2"> <li><a href="javascript:;" index="4">section 4</a></li> <li><a href="javascript:;" index="5">section 5</a></li> <li><a href="javascript:;" index="6">section 6</a></li> </ul> </div> <script> var as = document.querySelectorAll("a") var item = document.querySelectorAll(".tab-content1") console.log(as) // console.log(lis) for (var i = 0; i < as.length; i++) { as[i].addEventListener('click', function() { // 幹掉其他人 for (var j = 0; j < as.length; j++) { as[j].className = '' } // 留下自己 this.className = "active" // 顯示內容 var index = this.getAttribute('index') console.log(index) // 幹掉其他人 for (var i = 0; i < item.length; i++) { item[i].style.display = "none" } // 留下自己 item[index - 1].style.display = "block" }) } </script> </body> </html>
  • vue實現

    vue實現起來相對簡單,只需要靈活運用v-if和v-for

    具體程式碼:

    <!DOCTYPE html>
    <html lang="en">
    
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Document</title>
        <style>
            * {
                margin: 0;
                padding: 0;
            }
            
            .vertical-tab {
                width: 920px;
                margin: 100px auto;
            }
            
            .vertical-tab .nav {
                list-style: none;
                width: 200px;
            }
            
            .vertical-tab .nav-tabs1 {
                border-right: 3px solid #e7e7e7;
            }
            
            .vertical-tab .nav-tabs2 {
                border-left: 3px solid #e7e7e7;
            }
            
            .vertical-tab .nav a {
                display: block;
                font-size: 18px;
                font-weight: 700;
                text-align: center;
                letter-spacing: 1px;
                text-transform: uppercase;
                padding: 10px 20px;
                margin: 0 0 1px 0;
                text-decoration: none;
            }
            
            .vertical-tab .tab-content {
                color: #555;
                background-color: #fff;
                font-size: 15px;
                letter-spacing: 1px;
                line-height: 23px;
                padding: 10px 15px 10px 25px;
                display: table-cell;
                position: relative;
            }
            
            .vertical-tab .nav-tabs1 {
                float: left;
            }
            
            .vertical-tab .tabs {
                width: 500px;
                box-sizing: border-box;
                float: left;
            }
            
            .vertical-tab .tab-content h3 {
                font-weight: 600;
                text-transform: uppercase;
                margin: 0 0 5px 0;
            }
            
            .vertical-tab .nav-tabs2 {
                float: right;
            }
            
            .tab-content {
                position: relative;
            }
            
            .tab-content .tab-pane {
                position: absolute;
                top: 10px;
                left: 20px;
            }
            
            .nav li.active a {
                color: #198df8;
                background: #fff;
                border: none;
            }
            
            .fade {
                opacity: 0;
                transition: all .3s linear;
            }
            
            .fade.active {
                opacity: 1;
            }
        </style>
    </head>
    
    <body>
        <div class="vertical-tab" id="app">
            <!-- Nav tabs -->
            <ul class="nav nav-tabs1">
                <li v-on:click='change(index,0)' :class='currentIndex==index?"active":""' v-if="index < list.length/2" v-for="(item, index) in list"><a href="#"> {{item.title}} </a></li>
            </ul>
            <!-- Tab panes -->
            <div class="tab-content tabs">
                <div class="tab-pane  fade" :class='currentIndex==index?"active":""' :key='item.id' v-for='(item, index) in list'>
                    <h3>{{item.title}}</h3>
                    <p>{{item.content}}</p>
                </div>
    
            </div>
            <!-- Nav tabs -->
            <ul class="nav nav-tabs2">
                <li v-on:click='change(index,1)' :class='currentIndex==index?"active":""' v-if="index >= list.length/2" v-for="(item, index) in list"><a href="#"> {{item.title}} </a></li>
            </ul>
        </div>
        <script type="text/javascript" src="js/vue.js"></script>
        <script>
            new Vue({
                el: "#app",
                data: {
                    currentIndex: 0, // 選項卡當前的索引
                    list: [{
                        id: 1,
                        title: 'Section 1',
                        content: 'content1'
                    }, {
                        id: 2,
                        title: 'Section 2',
                        content: 'content2'
                    }, {
                        id: 3,
                        title: 'Section 3',
                        content: 'content3'
                    }, {
                        id: 4,
                        title: 'Section 4',
                        content: 'content4'
                    }, {
                        id: 5,
                        title: 'Section 5',
                        content: 'content5'
                    }, {
                        id: 6,
                        title: 'Section 6',
                        content: 'content6'
                    }]
                },
                methods: {
                    change(index, flag) {
                        if (flag) {
                            console.log(index)
                            this.currentIndex = index;
                        } else {
                            this.currentIndex = index;
                        }
    
                    }
                }
    
            })
        </script>
    </body>