方法一

props: {
      value: {
        type: String,
        default: () => {
          return ''
        }
      }
    },
computed: {
      radioList() {
        var list = this.value
        return list.filter(item => item.type == 'radio')
      },
    },

methods: {
      change(val) {
        this.$emit('event', param);
      },
}

方法二

model: {
    prop: 'modelVal',//指向props的参数名
    event: 'change'//事件名称
},
props: {
      modelVal: '',
},
computed: {
    imageUrl() {
    return this.modelVal;
    }
},
methods: {
      change(val) {
        this.$emit('change', res.rspBody.relativelyPath);
      },
}