Vue 组件传值几种常用方法【总结】

this.$router.push({path:'/B',query:{id:1}})

this.$route.query.id

<template>
  <div>
    <ul>
      <li v-for='(item,index) in nameList' :key='index'>{{item.name}}</li>
    </ul>
  </div>
</template>
<script>
export default {
  props:['nameList']
}
</script>

<template>
  <div>
    <div>这是父组件</div>
    <child :name-list='names'></child>  
  </div>
</template>
<script>
import child from './child.vue'
export default {
  components:{
    child
  },
  data(){
    return{
      names:[
        {name:'柯南'},
        {name:'小兰'},
        {name:'工藤新一'}
      ]
    }
  }
}
</script>

<template>
  <div>
    <ul>
      <li v-for='(item,index) in nameList' :key='index'>{{item.name}}</li>
    </ul>
    <Button @click='toParent'>点击我</Button>
  </div>
</template>
<script>
export default {
  props:['nameList'],
  methods:{
    toParent(){
      this.$emit('emitData',123)
    }
  }
}
</script>

<template>
  <div>
    <div>这是父组件</div>
    <child :name-list='names' @emitData='getData'></child>  
  </div>
</template>
<script>
import child from './child.vue'
export default {
  components:{
    child
  },
  data(){
    return{
      names:[
        {name:'柯南'},
        {name:'小兰'},
        {name:'工藤新一'}
      ]
    }
  },
  methods:{
    getData(data){
      console.log(data); //123
    }
  }
}
</script>