<el-form-item label="次数" prop="Number">
<div><span>次数一:</span><el-input-number v-model="FirstNumber" :min="0" :max="100" :precision="0" label="次数一"></el-input-number> 次</div>
<div class=" WeekStyle"><span>次数二:</span><el-input-number v-model="SecondNumber" :min="0" :max="100" :precision="0" label="次数二"></el-input-number> 次</div>
<div><span>次数三:</span><el-input-number v-model="ThirdNumber" :min="0" :max="100" :precision="0" label="次数三"></el-input-number> 次</div>
</el-form-item>
向以上这种情况我应该如何写判断不为空。(必须要写判断的)