插槽

<div id="app">
    <todo>
    <!--:为v-bind:的简写-->
        <todo-title slot="todo-title" :title="title"></todo-title>
        <todo-items slot="todo-items" v-for="item in todoItems" :item="item"></todo-items>
    </todo>
</div>

<script src="https://cdn.jsdelivr.net/npm/vue@2.6.11/dist/vue.min.js"></script>
<script>
    Vue.component("todo", {
        template: '<div>' +
            '<slot name="todo-title"></slot>' +
            '<ul>' +
            '<slot name="todo-items"></slot>' +
            '</ul>' +
            '</div>'
    })

    Vue.component("todo-title", {
        props: ['title'],
        template: '<div>{{title}}</div>'
    })

    Vue.component("todo-items", {
        props: ['item'],
        template: '<div>{{item}}</div>'
    })

    var vm = new Vue({
        el: "#app",
        data: {
            title: "fruits",
            todoItems: ["苹果", "香蕉", "桃子"]
        }
    });
</script>

原文：https://www.cnblogs.com/pinked/p/12315615.html