<!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>
</head>

<body>
    <div id="app">

        <cpn></cpn>
        <cpn>
            <template slot-scope="slot">
                <span v-for="item in slot.data">{{item}}-</span>
                <span>{{slot.data.join('-')}}</span>
            </template>

        </cpn>
        <cpn>
            <template slot-scope="slot">
                    <span v-for="item in slot.data">{{item}}*</span>
                </template>

        </cpn>
    </div>
    <template id="cpn">
        <div>
            <slot :data="pLanguage">
         <ul>
             <li v-for="item in pLanguage">{{item}}</li>
         </ul>
        </slot>
        </div>
    </template>
    <script src="./js/vue.js"></script>
    <script>
        /*  const cpn = Vue.extend({
                                                                                                                                                    template: `#cpn`
                                                                                                                                                }) */
        const app = new Vue({
            el: '#app',
            data() {
                return {
                    message: 'geyao'
                }
            },
            components: {
                cpn: {
                    template: '#cpn',
                    data() {
                        return {
                            pLanguage: ['JavaScript', 'C++', 'C#']
                        }
                    },

                }
            }
        })
    </script>
</body>

</html>

运行结果