普通表单必填验证

1.增加lay-verify="required"即可

<textarea lay-verify="required" required id="abnormalDescription"
          placeholder="请输入"
          class="layui-textarea"></textarea>

select下拉必填

正常使用

1.增加lay-verify=“required”

2. 增加请输入性别，给select给定一个默认值

    <div class="layui-form-item">
        <label class="layui-form-label">性别</label>
        <div class="layui-input-inline">
            <select name="sex" lay-verify="required">
                <option value="">请输入性别</option>
                <option value="0">男</option>
                <option value="1">女</option>
            </select>
        </div>
    </div>

Vue版本

在打开页面的时候，给fltAbnormalEvent.importance设置值为”“即可，默认值应该是undefined，不是layui所期待的"" 字符串所以不生效

<div class="layui-input-block">
    <select  lay-verify="required" required id="importance" v-model="fltAbnormalEvent.importance" class="layui-input-block"
    >
        <option value=""></option>
        <option value="1">重要</option>
        <option value="2">普通</option>
    </select>
</div>

Xmselect必填

增加layVerify: ‘required’,
layVerType: ‘tips’，即可

this.sendToCompany = xmSelect.render({
    el: '#sendToCompany',
    layVerify: 'required',
    layVerType: 'tips',
    data: []
})

#参考文章
https://blog.csdn.net/weixin_44415787/article/details/118608388
Xmselect使用说明
https://maplemei.gitee.io/xm-select/?lalalalalala=1#/senior/form