Vue2.0 组件传值通讯的示例代码

<template>
 <div>
 <div class="judge-modal" @click="cancel"></div>
 <div class="judge">
  <br>
  <div class="text-center font16">评价</div>
  <judge-star v-for="item,index in starList" :key="index" @judge="judge" :name="item.name" :index="index" ></judge-star>
  <br>
  <div class="box container text-left">
  <span class="icon-i"></span> 评价内容
  </div>
  <div class="bgfff container font14">
  <textarea placeholder="请输入您的评价，方便我们改进，谢谢！" type="textarea" class="textarea" rows="6" v-model="judgeTxt"></textarea>
  </div>
  <div class="container">
  <br>
  <div class="btn btn_block text-center" @click="submit">提交</div>
  </div>
 </div>
 </div>
</template>

<script>
 import JudgeStar from './judgeStar.vue'
 export default{
 data(){
  return{
  starList:[
   {name:'服务态度',key:'evaluate.serviceStarLevel'},
   {name:'责任感',key:'evaluate.dutyStarLevel'},
   {name:'准时度',key:'evaluate.onTimeStarLevel'},
  ],
  evaluate:[],
  judgeTxt:''
  }
 },
 components:{
  JudgeStar
 },
 computed:{

 },
 methods:{
  cancel(){
  this.$emit('cancel')
  },
  submit(){
  let data = '';
  this.starList.forEach((val,index)=>{
   data =`${val.key}:${this.evaluate[index]}`
   console.log(data)
  });
  },
  judge(data){
   this.evaluate[data[0]]=data[1];
  }
 }
 }
</script>

<template>
 <div class="flex_cont container">
 <div class="flex_item name">{{name}}</div>
 <div class="flex_item">
  <star-img @choose="choose" v-for="item,index in starArr" :key="index" :chooseIndex="chooseIndex" :index="index"></star-img>
 </div>
 </div>

</template>

<script>
 import StarImg from './starImg.vue'
 export default{
 props:{
  name:String,
  index:''
 },
 data(){
  return{
  chooseIndex:4,
  starArr:Array.from({ length: 5 })
  }
 },
 components:{
  StarImg
 },
 mounted(){
  this.$emit('judge',[this.index,this.chooseIndex+1]);
 },
 methods:{
  choose(data){
  this.chooseIndex = data;
  this.$emit('judge',[this.index,this.chooseIndex+1]);
  }
 }
 }
</script>

<template>
 <i style="margin: 0 3px;" :class="icon" @click="choose"></i>
</template>

<script>
export default{
 props:{
  index:Number, //当前星星的索引
  chooseIndex:Number //选中星星的索引
 },
 data(){
  return{
   icon:'icon-star'
  }
 },
 watch:{
 //大于index表明没有被选中，反之则为选中，
  chooseIndex:function () {
  if(this.chooseIndex>=this.index){
   this.icon = 'icon-star'
  } else {
   this.icon = 'icon-star2'
  }
  },
 },
 methods:{
  choose(){
   /*所选星星最大索引*/
   this.$emit('choose',this.index)
  }
 },
 created(){

 }
}
</script>