ps:App.vue 父组件

  Hello.vue 子组件
 

App.vue  :

<template>
    <div id="app">
        <input type="button" name="" id="" @click="parentCall" value="父调子" />
        <hello ref="chil" />//hello组件
    </div>
</template>

<script>
    import hello from './components/Hello'
    export default {
        name: 'app',
        'components': {
            hello
        },
        methods: {
          parentCall () {
            this.$refs.chil.chilFn('我是父元素传过来的')
          }
        }
    }
</script>

/*Hello.vue  :*/

<template>
    <div class="hello"></div>
</template>

<script>
    export default {
        name: 'hello',
        'methods': {
         chilFn (msg) {
         alert(msg)
        }
        }
    }
</script>                            

 

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