vue组件传值之父传子

<template>
  <div>
    <v-header :title="title" :run="run"></v-header>
    <h2>我是home组件</h2>
  </div>

</template>


<script>
import Header from ‘./Header‘
export default {
  data() {
    return {
      msg: "msg",
      title:"hello"
    };
  },
  components:{
    ‘v-header‘:Header
  },
  methods: {
    run(val) {
      alert(val);
    }
  },

  
};
</script>

<template>
  <div>

    <h1>我是header组件--{{title}}</h1>
    <button @click="run(123123)">调父组件函数</button>
  </div>

</template>


<script>
export default {
  data() {
    return {
    };
  },
  props:[‘title‘,‘run‘]
  
};
</script>