<template>
  <div>
      <p>父组件传入子组件的值：{{name}}</p>
    <fieldset>
      <legend>子组件</legend>
      <child :val.sync="name">
      </child>
    </fieldset>
  </div>
</template>

<script>
import child from ‘./child‘;
export default {
    components:{child},
    data: function () {
        return {
            name:‘hello‘
        }
     },
    methods: {
        
    }
}
</script>

<style>

</style>

<template>
  <div style="margin-top: 300px;margin-left: 500px;">
    <label class="child">
        输入框：
       <input :value=val @input="$emit(‘update:val‘,$event.target.value)"/>
    </label>
  </div>
</template>

<script>
export default {
    name:‘child‘,
    props:{
        val:String
    },
    data()  {
        return {
        }
    },
    methods: {
    }
}
</script>

<style>

</style>