标签页代码如下：

// 注意：el-form中的数据绑定不可以用v-model，要使用:model
<el-form ref="ruleFormRef" :rules="rules" :model="userTemp" label-width="80px"><el-row :gutter="20"><el-col :span="12"><el-form-item label="账号" prop="username"><el-input v-model="userTemp.username"/></el-form-item></el-col><el-col :span="12"><el-form-item label="姓名" prop="name"><el-input v-model="userTemp.name"/></el-form-item></el-col></el-row>
</el-form>
<el-button type="primary" @click="confirmAdd(ruleFormRef)">确定</el-button>

语法糖代码如下：

<script setup lang="ts">
import {ElMessage, ElMessageBox, FormRules, FormInstance} from "element-plus"const userTemp = ref({username: '',name: '',
})
// 自定义检验规则
const usernameCheck = (rule, value, callback) => {if (value === undefined) {callback(new Error('账号不能为空'))} else {if (value === '') {callback(new Error('账号不能为空'))} else {if (value !== '') {let reg = /^[A-Za-z0-9]+$/if (!reg.test(value)) {callback(new Error('账号只能是字母或数字'))}}callback()}}
}
const rules = ref<FormRules<typeof userTemp>>({username: [{required: true, validator: usernameCheck, trigger: 'blur'}],name: [{required: true, message: '姓名不能为空', trigger: 'blur'}]
})
// 该名称要和标签中ref的名称一样
const ruleFormRef = ref(null)const confirmAdd = (formEl: FormInstance | undefined) => {if (!formEl) returnformEl.validate((valid) => {if (valid) {// 验证成功进入这里console.log('验证成功')} else {console.log('error submit!')return false}})
}
// 重置验证规则，调用resetForm(ruleFormRef.value)
const resetForm = (formEl: FormInstance | undefined) => {if (!formEl) returnformEl.resetFields()
}
</script>