简单的组件间传值 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Hello World</title>
    <script src="./vue.js"></script>
</head>
<body>
<div id="root">
    <input type="text" v-model="todoValue">
    <button @click="handleBtnClick">提交</button>
    <ul>
        <todo-item v-bind:content="item"
                   v-bind:index="index"
                   v-for="(item,index) in list"
                    @delete="handleItemDelete">
        </todo-item>
    </ul>
</div>
<script>
    var TodoItem = {
        props: ['content','index'],
        template: "<li @click='handleItemClick'>{{content}}</li>",
        methods:{
            handleItemClick:function () {
                this.$emit('delete',this.index);  //点击子组件向父组件触发事件

            }
        }
    };


    var app = new Vue({
        el: '#root',
        components:{
            TodoItem:TodoItem    //注册局部组件
        },
        data: {
            list: [],
            todoValue: ''
        },
        methods: {
            handleBtnClick: function () {
                this.list.push(this.todoValue);
                this.todoValue = ''
            },
            handleItemDelete:function (index) {
                this.list.splice(index,1)  //实现点哪删哪

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

<!--
逻辑解析
    父组件向子组件传值  用到v-bind   注意子组件需要接受传递过来的值props[]
    子组件向父组件传值  this.$emit 触发事件  相对的父组件在监听该事件
    v-bind:content   简写 :content
    v-on:delete  简写@delete
-->

 

posted @ 2018-11-13 11:00  alexbiu  阅读(171)  评论(0)    收藏  举报