Vue自定义事件 

<!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div id="app">
    <todo>
        <todo-title slot="todo-title" :title="title"></todo-title>
        <todo-items slot="todo-items" v-for="(item,index) in todoItems"
                    :item="item" :index="index" v-on:remove="removeItems(index)"></todo-items>
    </todo>
    <!--    <p>列表书籍</p>-->
    <!--    <ul>-->
    <!--        <li>Java</li>-->
    <!--        <li>Linux</li>-->
    <!--        <li>Python</li>-->
    <!--    </ul>-->
</div>
<!--1.导入Vue.js-->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
    //slot:插槽
    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','index'],
        //template只支持一个根节点
        //只能绑定当前组件方法
        template: '<li>{{index}}---{{item}}<button @click="remove">删除</button></li> ',
        methods: {
            remove: function (index) {
                this.$emit('remove',index);

            }
        }
    });
    var vm = new Vue({
        el:"#app",
        data: {
            title: "asdaf",
            todoItems: ['wty','asd','zzz']
        },
        methods: {
            removeItems: function(index) {
                console.log("删除了"+this.todoItems[index]+"OK");
                this.todoItems.splice(index,1);//一次删除一个元素
            }
        }
    })
</script>
</body>
</html>

 

posted @ 2022-08-12 21:13  doremi429  阅读(19)  评论(0)    收藏  举报