Vue 父子组件通信传值（子组件中使用父组件中的数据）

1. 父传子 props

父组件中的数据传递给子组件

官方文档：通过-Prop-向子组件传递数据

props: ['movies'],
props: {
    movies: Array
},
props: {
    movies: {
        type: Array,
        default: [],
        required: true
    }
},

props 的驼峰标识

<cpn :c-info="userinfo"></cpn>
props: {
    cInfo: {
        type: Object,
        default: { name: 'liang' }
    }
}

2. 使用示例

<div id="app">
    <parent :article="art"></parent>
</div>
<script>
    var child = {
        template: `<p>{{ author }}</p>`,
        props: ['author']
    }
    var par = {
        template: `<div>
            {{ article.title }}    
            <child :author="article.author"></child>
            </div>
        `,
        props: ['article'],
        components: {
            child: child
        }
    }
    let vm = new Vue({
        el: '#app',
        data: {
            art: {
                title: 'liang',
                content: 'itqaq.com',
                author: '辰风沐阳'
            }
        },
        components: {
            parent: par
        }
    })
</script>

3. 实战文章列表

<div id="app">
    <art-list :article="arts"></art-list>
</div>
<script>
    var artis = {
        template: `
        <ul>
            <li v-for="art in article">
                <h1>{{ art.title }}</h1>
                <img :src="art.img" style="width:200px;">
                <p>{{ art.content }}</p>
            </li>
        </ul>
        `,props: ['article']
    }
    let vm = new Vue({
        el: '#app',
        data: {
            arts: [
                {
                    title: '01',
                    img: 'img/01vue.jpg',
                    content: '01content',
                },
                {
                    title: '02',
                    img: 'img/01vue.jpg',
                    content: '02content'
                },
            ]
        },
        components: {
            'art-list': artis
        }
    })
</script>