el-dialog 关闭重新打开时恢复初始状态
<el-dialog :visible.sync="dialogVisible" v-if="dialogVisible"></el-dialog>
elementUI el-form rules多种验证
https://blog.youkuaiyun.com/weixin_34256508/article/details/105537221
el-select 绑定值为对象类型
<el-select :value="selectedItem" @change="listChange" value-key="id">
<el-option v-for="item in list" :label="item.name" :value="item" :key="item.id"></el-option>
</el-select>
el-select隐藏下拉框
this.$refs.select123.blur()
组件封装:
table+pagination
input加上字数限制时,显示已输入的字数
封装组件时:组件内使用的数据,