1.trigger属性用于设置何时触发 Popover，支持四种触发方式：hover，click，focus 和 manual。对于触发 Popover 的元素，有两种写法：使用 slot="reference" 的具名插槽，或使用自定义指令v-popover指向 Popover 的索引ref。

<template>
    <div class="listcontent">
      <el-row v-for="(item,index) in datalist" :key="index">
        <el-popover
          placement="right"
          trigger="hover"
        >
            <div class="popup" >
                <h3>{{item.industryName}}</h3>
                <el-row v-for="(zxSysIndustryChildren,cindex) in item.zxSysIndustryChildren" :key="cindex" style="width:600px;"> 
                    <el-col :span="6" style="color:#000000;font-size:13px">
                        {{zxSysIndustryChildren.occupationName}}
                    </el-col>
                    <el-col :span="18" style="border-bottom: 1px solid #F4F4F4;" >
                        <el-radio-group v-model="radio" v-for="(zxSysPositionChildren,tindex) in zxSysIndustryChildren.zxSysPositionChildren" :key="tindex">
                            <el-radio-button>{{zxSysPositionChildren.positionName}}</el-radio-button>
                        </el-radio-group>
                    </el-col>
                </el-row>
            </div>
            <el-button type="primary" plain slot="reference" style="text-align:left;">
                <b>{{item.industryName}}</b>
                <span class="textname" v-for="(zxSysPositionArrayHot,cindex) in item.zxSysPositionArrayHot" :key="cindex">{{zxSysPositionArrayHot.positionName}}</span>
            </el-button>
        </el-popover>
      </el-row>
      <div class="checkmore">
          <el-button type="text" plain>
            显示全部职位
          </el-button>
      </div>
    </div>
</template>

<script>
  export default {
      data() {
        return {
            radio:'',
            datalist:[],
            datalist1:[],
            companynum:7,
        };
      },
      mounted() {
        this.queryZxSysIndustryTree();
      },
      methods: {
        loadmoreCompany(){
          if(this.datalist1.length>=this.companynum){
            this.datalist = this.datalist1.slice(0,this.companynum);
          }
        },
        handleSelect(key, keyPath) {
          this.queryZxSysIndustryTree();
        },
        queryZxSysIndustryTree(){
          //三级联查
          this.$busapi.zxSysIndustry.zxSysIndustryTree().then((res) => {
                        if (res.code == "0000") {
                          this.datalist1 = res.data
                          this.datalist = res.data.slice(0,this.companynum);
                       } else {
                          this.$message({message: '错误原因：' + res.msg, type: 'error'})
                      }
           }).catch((res) => {
              this.$message({message: res.msg, type: 'error'});
          });
        },
      }

    };
</script>

<style rel="stylesheet/scss" lang="scss" scoped="scoped">
        .listcontent{
            ::v-deep.el-popover__reference-wrapper{
                color: red;
                border-radius: 5px;
                .el-button--primary.is-plain{
                    width: 100%;
                    height: 48px;
                    color: #515151;
                    border-radius: 0px;
                    border: 0rem;
                    background-color: #fff;
                    b{
                        font-size: 16px;
                        color: #000000;
                    }
                    span.textname{
                        font-size: 14px;
                        display: inline-block;
                        margin-left: 20px;
                    }
                }
                .el-button--primary.is-plain:active, .el-button.is-plain:focus, .el-button.is-plain:hover{
                    color: #fff;
                    background-color: $frontNormalColor;
                    b{
                        color: #fff;
                    }
                }
                
            }
            
            .checkmore{
                background-color: #fff;
                border-bottom-left-radius: 8px;
                border-bottom-right-radius: 8px;
                border-top: 1px solid #E4E4E4;
                .el-button{
                    margin-left: 20px;
                    height: 48px;
                    font-size: 16px;
                }
            }
            
        }
    .el-popover{
        color: red;
        h3{
            // margin-bottom: 15px;
        }
        .popup{
            line-height: 2.4375rem;
			::v-deep.el-radio-button__inner{
				border: 0px;
				padding: 12px 16px;
			}
      ::v-deep.el-radio-button:first-child .el-radio-button__inner{
        border-radius: 0px;
      }
      ::v-deep.el-radio-button:last-child .el-radio-button__inner{
        border-radius: 0px;
      }
        }
		
    }
    
</style>