<!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>
    <link rel="stylesheet" href="style.css">
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
    <div id="app">
        <div class="LBT" @click="to" v-html="imgs[i]">
        </div>
    </div>
    <script>
        var app = new Vue({
            el: "#app",
            data: {
                imgs: [
                    ‘<img src="/img/1.jpg"  class="img1">‘, ‘<img src="/img/2.jpg"  class="img1">‘, ‘<img src="/img/3.jpg"  class="img1">‘, ‘<img src="/img/4.jpg"  class="img1">‘, ‘<img src="/img/5.jpg"  class="img1">‘
                ],
                i: 0,
            },
            methods: {
                to() {
                    setInterval(function () {
                        app.i = app.i + 1;
                        if (app.i > 4) {
                            app.i = 0;
                        }
                        console.log(app.i);
                    }, 3000);
                }
            }
        })
    </script>
</body>
</html>