vue.js实现轮播图

vue.js实现切换式轮播图

HTML部分

<body>
    <div id="app">
        <div id="banner">
            <div id="imglist">
                <a href="" v-for="(item,index) in Rot_a" :key="index"><img :src="item" alt=""></a>
            </div>
            <ul id="iconlist">
                <li v-for="(item,index) in Rot_a" :key="index"></li>
            </ul>
            <div class="ss">
                <span @click="ss_a(1)">左</span>
                <span @click="ss_a(2)">右</span>
            </div>
        </div>
    </div>
</body>

CSS部分

    <style>
        * {
            padding: 0px;
            margin: 0px;
            list-style: none;
            text-decoration: none;
        }
        
        #banner {
            position: relative;
            width: 1280px;
            height: 600px;
            overflow: hidden;
            border: 2px solid red;
        }
        
        #imglist {
            width: 1280px;
            height: 600px;
        }
        
        #imglist>a {
            width: 1280px;
            height: 600px;
            display: none;
        }
        
        #imglist>a:nth-child(1) {
            display: block;
        }
        
        #imglist>a img {
            display: block;
            width: 100%;
            height: 100%;
        }
        
        #iconlist {
            position: absolute;
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            height: 50px;
            bottom: 0px;
            left: 0px;
        }
        
        #iconlist li {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 30px;
            height: 30px;
            background-color: #fff;
            border-radius: 50%;
            margin: 0px 20px;
            cursor: pointer;
        }
        
        #iconlist li:nth-child(1) {
            background-color: red;
        }
        
        .ss {
            position: absolute;
            top: 50%;
            margin-top: -25px;
            width: 100%;
            display: flex;
            flex-flow: row;
            justify-content: space-between;
        }
        
        .ss span {
            width: 50px;
            height: 50px;
            background-color: pink;
        }
    </style>

JS部分

<script>
    new Vue({
        el: '#app',
        data: function() {
            return {
                Rot_a: [
                    'image/01.jpg',
                    'image/02.jpg',
                    'image/03.jpg',
                    'image/04.jpg',
                ],
                num: 0,
            };
        },
        mounted() {
            this.aa()
        },
        methods: {
            aa() {
                var div = document.getElementById("banner")
                var icons = document.getElementById("iconlist").getElementsByTagName("li")
                that = this
                    // 设置循环变量
                    // 设置定时器
                var timer = setInterval(run, 1500)
                    // 循环函数
                function run() {
                    that.num = that.num + 1
                    if (that.num >= that.Rot_a.length) {
                        that.num = 0
                    }
                    console.log(that.num);

                    that.controlimg(that.num)
                    that.controlicon(that.num)
                }
                // 鼠标悬停事件
                div.onmouseover = function() {
                        // 停止定时器
                        clearInterval(timer);
                    }
                    // 鼠标移走事件
                div.onmouseout = function() {
                        timer = setInterval(run, 1500)
                    }
                    // 给图标绑定事件
                for (var i = 0; i < icons.length; i++) {
                    (function(i) {
                        icons[i].onmouseover = function() {
                            that.controlimg(i)
                            that.controlicon(i)
                                // 循环改变变量
                            that.num = i
                        }
                    })(i)
                }
            },
            ss_a(id) {
                that = this
                let ids = id
                that = this
                if (ids == 1) {
                    that.num = that.num - 1
                    if (that.num <= -1) {
                        that.num = that.Rot_a.length - 1
                    }
                } else {
                    that.num = that.num + 1
                    if (that.num >= that.Rot_a.length) {
                        that.num = 0
                    }
                }
                that.controlimg(that.num)
                that.controlicon(that.num)
            },

            // 定义一个函数 控制图片
            controlimg(n) {
                var imgs = document.getElementById("imglist").getElementsByTagName("a")
                for (var i = 0; i < imgs.length; i++) {
                    imgs[i].style.display = "none"
                }
                // 显示指定图片
                imgs[n].style.display = "block"
            },
            controlicon(n) {
                var icons = document.getElementById("iconlist").getElementsByTagName("li")
                for (var i = 0; i < icons.length; i++) {
                    icons[i].style.backgroundColor = "#fff"
                }
                // 当前的图标变红
                icons[n].style.backgroundColor = "red"
            }
        }
    })
</script>

全部代码

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>轮播图</title>
    <script src="js/jquery-3.4.1.min.js"></script>
    <script src="js/vue.js"></script>
    <style>
        * {
            padding: 0px;
            margin: 0px;
            list-style: none;
            text-decoration: none;
        }
        
        #banner {
            position: relative;
            width: 1280px;
            height: 600px;
            overflow: hidden;
            border: 2px solid red;
        }
        
        #imglist {
            width: 1280px;
            height: 600px;
        }
        
        #imglist>a {
            width: 1280px;
            height: 600px;
            display: none;
        }
        
        #imglist>a:nth-child(1) {
            display: block;
        }
        
        #imglist>a img {
            display: block;
            width: 100%;
            height: 100%;
        }
        
        #iconlist {
            position: absolute;
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            height: 50px;
            bottom: 0px;
            left: 0px;
        }
        
        #iconlist li {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 30px;
            height: 30px;
            background-color: #fff;
            border-radius: 50%;
            margin: 0px 20px;
            cursor: pointer;
        }
        
        #iconlist li:nth-child(1) {
            background-color: red;
        }
        
        .ss {
            position: absolute;
            top: 50%;
            margin-top: -25px;
            width: 100%;
            display: flex;
            flex-flow: row;
            justify-content: space-between;
        }
        
        .ss span {
            width: 50px;
            height: 50px;
            background-color: pink;
        }
    </style>
</head>

<body>
    <div id="app">
        <div id="banner">
            <div id="imglist">
                <a href="" v-for="(item,index) in Rot_a" :key="index"><img :src="item" alt=""></a>
            </div>
            <ul id="iconlist">
                <li v-for="(item,index) in Rot_a" :key="index"></li>
            </ul>
            <div class="ss">
                <span @click="ss_a(1)">左</span>
                <span @click="ss_a(2)">右</span>
            </div>
        </div>
    </div>
</body>
<script>
    new Vue({
        el: '#app',
        data: function() {
            return {
                Rot_a: [
                    'image/01.jpg',
                    'image/02.jpg',
                    'image/03.jpg',
                    'image/04.jpg',
                ],
                num: 0,
            };
        },
        mounted() {
            this.aa()
        },
        methods: {
            aa() {
                var div = document.getElementById("banner")
                var icons = document.getElementById("iconlist").getElementsByTagName("li")
                that = this
                    // 设置循环变量
                    // 设置定时器
                var timer = setInterval(run, 1500)
                    // 循环函数
                function run() {
                    that.num = that.num + 1
                    if (that.num >= that.Rot_a.length) {
                        that.num = 0
                    }
                    console.log(that.num);

                    that.controlimg(that.num)
                    that.controlicon(that.num)
                }
                // 鼠标悬停事件
                div.onmouseover = function() {
                        // 停止定时器
                        clearInterval(timer);
                    }
                    // 鼠标移走事件
                div.onmouseout = function() {
                        timer = setInterval(run, 1500)
                    }
                    // 给图标绑定事件
                for (var i = 0; i < icons.length; i++) {
                    (function(i) {
                        icons[i].onmouseover = function() {
                            that.controlimg(i)
                            that.controlicon(i)
                                // 循环改变变量
                            that.num = i
                        }
                    })(i)
                }
            },
            ss_a(id) {
                that = this
                let ids = id
                that = this
                if (ids == 1) {
                    that.num = that.num - 1
                    if (that.num <= -1) {
                        that.num = that.Rot_a.length - 1
                    }
                } else {
                    that.num = that.num + 1
                    if (that.num >= that.Rot_a.length) {
                        that.num = 0
                    }
                }
                that.controlimg(that.num)
                that.controlicon(that.num)
            },

            // 定义一个函数 控制图片
            controlimg(n) {
                var imgs = document.getElementById("imglist").getElementsByTagName("a")
                for (var i = 0; i < imgs.length; i++) {
                    imgs[i].style.display = "none"
                }
                // 显示指定图片
                imgs[n].style.display = "block"
            },
            controlicon(n) {
                var icons = document.getElementById("iconlist").getElementsByTagName("li")
                for (var i = 0; i < icons.length; i++) {
                    icons[i].style.backgroundColor = "#fff"
                }
                // 当前的图标变红
                icons[n].style.backgroundColor = "red"
            }
        }
    })
</script>

</html>

        
  < 
  style 
  > 
 
  * { 
 
  padding:  
  0px; 
 
  margin:  
  0px; 
 
  list-style:  
  none; 
 
  text-decoration:  
  none; 
 
           } 
 
  #banner { 
 
  position:  
  relative; 
 
  width:  
  1280px; 
 
  height:  
  600px; 
 
  overflow:  
  hidden; 
 
  border:  
  2px  
  solid  
  red; 
 
           } 
 
  #imglist { 
 
  width:  
  1280px; 
 
  height:  
  600px; 
 
           } 
 
  #imglist> 
  a { 
 
  width:  
  1280px; 
 
  height:  
  600px; 
 
  display:  
  none; 
 
           } 
 
  #imglist> 
  a:nth-child( 
  1) { 
 
  display:  
  block; 
 
           } 
 
  #imglist> 
  a  
  img { 
 
  display:  
  block; 
 
  width:  
  100%; 
 
  height:  
  100%; 
 
           } 
 
  #iconlist { 
 
  position:  
  absolute; 
 
  display:  
  flex; 
 
  justify-content:  
  center; 
 
  align-items:  
  center; 
 
  width:  
  100%; 
 
  height:  
  50px; 
 
  bottom:  
  0px; 
 
  left:  
  0px; 
 
           } 
 
  #iconlist  
  li { 
 
  display:  
  flex; 
 
  justify-content:  
  center; 
 
  align-items:  
  center; 
 
  width:  
  30px; 
 
  height:  
  30px; 
 
  background-color:  
  #fff; 
 
  border-radius:  
  50%; 
 
  margin:  
  0px  
  20px; 
 
  cursor:  
  pointer; 
 
           } 
 
  #iconlist  
  li:nth-child( 
  1) { 
 
  background-color:  
  red; 
 
           } 
 
  .ss { 
 
  position:  
  absolute; 
 
  top:  
  50%; 
 
  margin-top:  
  -25px; 
 
  width:  
  100%; 
 
  display:  
  flex; 
 
  flex-flow:  
  row; 
 
  justify-content:  
  space-between; 
 
           } 
 
  .ss  
  span { 
 
  width:  
  50px; 
 
  height:  
  50px; 
 
  background-color:  
  pink; 
 
           } 
 
  </ 
  style 
  >

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