<Select
                  v-model="deptId"
                  filterable
                  :only-filter-with-text="true"// //用来控制是否启用自定义的originValidateOption函数。true代表启用
                  clearable
                >
                  <Option
                    v-for="item in deptList"
                    :value="item.conCode"
                    :key="item.conCode"
                    >{{ item.conName }}</Option
                  >
                </Select>

iView.Select.props.onlyFilterWithText = {
  type: Boolean,
  default: false
};
iView.Select.methods.originValidateOption = iView.Select.methods.validateOption;
iView.Select.methods.validateOption = function ({children, elm, propsData}) {
    if (this.onlyFilterWithText) {
      const textContent = (elm && elm.textContent) || (children || []).reduce((str, node) => {
          const nodeText = node.elm ? node.elm.textContent : node.text;
          return `${str} ${nodeText}`;
      }, '') || '';
      const query = this.query.toLowerCase().trim();
      return textContent.toLowerCase().includes(query);
    } else {
      return this.originValidateOption({children, elm, propsData});
    }
};
//因为iview内部的validateOption函数不仅会匹配conName，还会匹配conCode。只要其中有一项匹配，那么这条数据就会被选中。我们现在重写iview的validateOption函数，让它只匹配conName
Vue.use(iView, {
  i18n: (key, value) => i18n.t(key, value)
})