vue：3.x
element-plus：2.7.3

重点：
1) tableData放到form对象里
2) form-item的prop要写成tableData.序号.属性

<!--table-表单校验-->
<template>
    <el-form ref="forms" :model="form">
        <el-table :data="form.tableData" style="width: 100vw">
            <el-table-column :label="col.label" v-for="col in cols">
                <template #default="scope">

                    <div v-if="scope.row.isEdit">
                        <el-form-item :prop="`tableData.${scope.$index}.${col.field}`" :rules="rules[col.field]">
                            <el-input v-model="scope.row[col.field]" :placeholder="`请输入${col.label}`" />
                        </el-form-item>
                    </div>

                    <div v-else>{{ scope.row[col.field] }}</div>

                </template>
            </el-table-column>

            <el-table-column fixed="right" label="Operations">
                <template #default="scope">
                    <el-button link type="primary" size="small" @click="edit(scope)">Edit</el-button>
                    <el-button link type="primary" size="small" @click="save(scope)">Save</el-button>
                </template>
            </el-table-column>
        </el-table>


        <el-form-item>
            <el-button type="primary" @click="submitForm(forms)">
                Submit
            </el-button>
            <el-button @click="resetForm(forms)">Reset</el-button>
        </el-form-item>
    </el-form>
</template>

<script lang="ts" setup>
import { FormInstance, FormRules } from 'element-plus';
import { onMounted, reactive } from 'vue';

import { ref } from 'vue'

const forms = ref < FormInstance > ()
const form = ref({ tableData: [] })
const rules = reactive < FormRules > ({
    name: [
        { required: true, message: "请输入姓名", trigger: "blur" },
    ],
    cardId: [
        { required: true, message: "请输入身份证", trigger: "blur" },
        { pattern: /^[1-9]\d{5}(18|19|([23]\d))\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/, message: '请输入正确的身份证号', trigger: 'blur' }
    ],
})

const cols = [
    { field: 'name', label: '姓名' },
    { field: 'city', label: '城市' },
    { field: 'cardId', label: '身份证' },
]

onMounted(() => {

    form.value.tableData = [
        {
            name: 'Tom',
            city: 'Los Angeles',
            cardId: 331022100040284032,
            isEdit: false
        },
        {
            name: 'Tom',
            city: 'Los Angeles',
            cardId: 331022100040284032,
            isEdit: false
        },
    ]
})

const edit = (scope) => {
    console.log(scope, 'scope')
    scope.row.isEdit = true
}

const save = async (scope) => {
    console.log(scope, 'scope')
    // scope.row.isEdit = false
    if (!forms) return
    console.log(form.value, forms, 'form')
    await forms.value.validate(async valid => {
        console.log(valid, 'valid')
    })
}


const submitForm = (formEl: FormInstance | undefined) => {
    if (!formEl) return
    formEl.validate((valid) => {
        if (valid) {
            console.log('submit!',form.value)
        } else {
            console.log('error submit!',form.value,formEl)
        }
    })
}

const resetForm = (formEl: FormInstance | undefined) => {
    if (!formEl) return
    formEl.resetFields()
}
</script>

<style scoped lang="less"></style>