element el-table resetfields() 不生效

 <el-form label-position="right" label-width="100px" ref="formList" :model="formList">
    <el-col :span=‘8‘>
       <el-form-item label="输入搜索" prop="inputSearch">
           <el-input
              placeholder=‘输入关键字‘
              prefix-icon=‘el-icon-search‘
              v-model=‘formList.inputSearch‘
              style="width: 100%;" clearable>
           </el-input>
         </el-form-item>
     </el-col>
     <el-col :span=‘8‘>
         <el-form-item label="日期" prop="endDate">
             <el-date-picker
                v-model="formList.endDate"
                type="date"
                placeholder="选择日期"
                value-format="yyyy-MM-dd"
                style="width: 100%;"
                :picker-options=‘pickerOptions‘>
             </el-date-picker>
          </el-form-item>
     </el-col>
     <el-col :span=‘8‘>
         <el-form-item label="是否选择" prop="isUpToDate">
              <el-select v-model=‘formList.isUpToDate‘ placeholder=‘是否选择‘ style="width: 100%;">
                  <el-option
                      v-for=‘select in selects‘
                      :key=‘select.value‘
                      :label=‘select.label‘
                      :value=‘select.value‘>
                   </el-option>
               </el-select>
          </el-form-item>
      </el-col>
      <el-col :span=‘8‘>
          <el-form-item>
               <el-button @click="resetForm(‘formList‘)">重置</el-button>
               <el-button @click="queryData">查询</el-button>
          </el-form-item>
      </el-col>
</el-form>

 data () {
      return {
         formList: {
             inputSearch: ‘‘,                   
             endDate: ‘‘,
              isUpToDate: ‘‘                     
         }
      };
   },
 methods: {
    resetForm (formName) {
       this.$refs[formName].resetFields();
   }
}