vue 插槽slot的使用

官网:https://cn.vuejs.org/v2/guide/components-slots.html

理解this.$emit自定义事件分发

案例

功能:使用嵌套插槽,并在子插槽中调用主页面函数,对元素进行删除

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>插槽</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" @remove="removeItems(index)" :key="index"></todo-items>
        </todo>
    </div>
<!--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"],
        //只能绑定当前组件的方法
        template:' <li>{{item}}  <input type="button" value="删除" @click="remove"></li>',
        methods:{
            remove:function (index) {
                //this.$emit 自定义事件分发
                this.$emit('remove',index);
            }
        }
    });
    var app= new Vue({
        el:"#app",
        data:{
            title:"标题",
            todoItems:["芒果","雪莉","香蕉"]
        },
        methods:{
            removeItems: function (index) {
                this.todoItems.splice(index,1);//一次删除一个元素
            }
        }
    });
</script>
</body>
</html>
slot插槽的使用

 

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转载自www.cnblogs.com/technicist/p/13371957.html