分为下面几个步骤：
（1） 自定义 el-table 的表头（即添加 “新增” 按钮）：
<el-table :data="propTableData.col.filter(data => handleAdd || data.name.toLowerCase().includes(handleAdd.toLowerCase()))" highlight-current-row border> </el-table>
<template slot="header" slot-scope="scope"> <el-button v-model="handleAdd" size="mini" type="success" round plain @click="handleAdd(scope.$index, scope.row)">{{ $t('common.add') }}</el-button> </template>
表头自定义了一个“添加”按钮，点击 el-table 动态添加一行。
（2） el-table 动态添加一行：
let row = { code: '', maxValue: '', minValue: '', name: '', valueType: 'String', id: '', typeId: '', warning: false, isSet: true } this.propTableData.col.push(row)
vue 数据变化驱动 dom 进行更新，给 table 绑定的数据 propTableData.col 添加一个元素，则表格会添加一行。
propTableData.sel 保存当前行数据：
this.propTableData.sel = row
（3） el-table 动态删除一行：
子组件中触发父组件的 delete 事件：
this.$emit('delete', row.id)
（4）当前行状态判断，即是否处于编辑状态，控制表格每一行的按钮元素的移除与插入：
<template slot-scope="scope"> <el-button size="mini" type="primary" round plain v-if="!scope.row.isSet" @click="valChange(scope.row,scope.$index,true)">{{ $t('common.edit') }}</el-button> <el-button size="mini" type="primary" round plain v-else @click="valChange(scope.row,scope.$index,true)">{{ $t('common.save') }}</el-button> <el-button size="mini" type="danger" round plain v-if="!scope.row.isSet" @click="handleDelete(scope.$index, scope.row)">{{ $t('common.delete') }}</el-button> <el-button size="mini" type="danger" round plain v-else @click="valChange(scope.row,scope.$index,false)">{{ $t('common.cancel') }}</el-button> </template>
上面代码中，通过 v-if=“scope.row.isSet” 来判断当前行是否处于编辑状态。
如果当前行处于编辑状态，则按钮为“保存”和“取消”，此时可对当前行进行保存和取消操作，且不能新增，除非先保存当前行；
如果当前行处于非编辑状态，则按钮为“编辑”和“删除”状态，此时可对当前行进行编辑和删除操作。
这样，就可以实现 el-table 行内编辑的需求。
完整版代码如下：
<template> <el-dialog :visible.sync="isShow" :before-close="beforeClose" :close-on-click-modal="false" :title="$t('basicData.device.propDlg.dlgTitle')" @open="open"> <el-table :data="propTableData.col.filter(data => handleAdd || data.name.toLowerCase().includes(handleAdd.toLowerCase()))" highlight-current-row border> <el-table-column label="No." type="index"></el-table-column> <el-table-column :label="$t('basicData.device.propDlg.code')"> <template slot-scope="scope"> <span v-if="scope.row.isSet"> <el-input size="mini" v-model="scope.row.code"></el-input> </span> <span v-else>{{ scope.row.code }}</span> </template> </el-table-column> <el-table-column :label="$t('basicData.device.propDlg.name')"> <template slot-scope="scope"> <span v-if="scope.row.isSet"> <el-input size="mini" v-model="scope.row.name"></el-input> </span> <span v-else>{{ scope.row.name }}</span> </template> </el-table-column> <el-table-column :label="$t('basicData.device.propDlg.minValue')"> <template slot-scope="scope"> <span v-if="scope.row.isSet"> <el-input size="mini" v-model="scope.row.minValue"></el-input> </span> <span v-else>{{ scope.row.minValue }}</span> </template> </el-table-column> <el-table-column :label="$t('basicData.device.propDlg.maxValue')"> <template slot-scope="scope"> <span v-if="scope.row.isSet"> <el-input size="mini" v-model="scope.row.maxValue"></el-input> </span> <span v-else>{{ scope.row.maxValue }}</span> </template> </el-table-column> <el-table-column :label="$t('basicData.device.propDlg.valueType')"> <template slot-scope="scope"> <span v-if="scope.row.isSet"> <el-select size="mini" v-model="scope.row.valueType" :placeholder="$t('common.pleSelect')"> <el-option v-for="item in valTypeOptions" :key="item.value" :label="item.label" :value="item.value"></el-option> </el-select> </span> <span v-else>{{ scope.row.valueType }}</span> </template> </el-table-column> <el-table-column :label="$t('basicData.device.propDlg.warning')"> <template slot-scope="scope"> <span v-if="scope.row.isSet"> <el-select v-model="scope.row.warning" size="mini"> <el-option v-for="item in warnOptions" :key="item.value" :label="item.label" :value="item.value"></el-option> </el-select> </span> <span v-else>{{ scope.row.warning===true?'是':'否' }}</span> </template> </el-table-column> <el-table-column> <template slot="header" slot-scope="scope"> <el-button v-model="handleAdd" size="mini" type="success" round plain @click="handleAdd(scope.$index, scope.row)">{{ $t('common.add') }}</el-button> </template> <template slot-scope="scope"> <el-button size="mini" type="primary" round plain v-if="!scope.row.isSet" @click="valChange(scope.row,scope.$index,true)">{{ $t('common.edit') }}</el-button> <el-button size="mini" type="primary" round plain v-else @click="valChange(scope.row,scope.$index,true)">{{ $t('common.save') }}</el-button> <el-button size="mini" type="danger" round plain v-if="!scope.row.isSet" @click="handleDelete(scope.$index, scope.row)">{{ $t('common.delete') }}</el-button> <el-button size="mini" type="danger" round plain v-else @click="valChange(scope.row,scope.$index,false)">{{ $t('common.cancel') }}</el-button> </template> </el-table-column> </el-table> </el-dialog> </template> <script> import { open } from 'fs' import '@/styles/uiot.scss' const defaultProp = { code: '', maxValue: '', minValue: '', name: '', valueType: 'String', id: '', typeId: '', warning: false } export default { props: { isShow: Boolean, oneRow: { type: Array, default: function() { return defaultProp } } }, data() { return { propTableData: { sel: null, // 选中行 col: [] }, warnOptions: [ { value: true, label: '是' }, { value: false, label: '否' } ], valTypeOptions: [ { value: 'String', label: 'String' }, { value: 'Int', label: 'Int' }, { value: 'Double', label: 'Double' }, { value: 'Boolean', label: 'Boolean' }, { value: 'Date', label: 'Date' } ] } }, created() {}, methods: { open() { this.propTableData.col = this.oneRow this.propTableData.col.map(i => { i.isSet = false }) console.log('open', this.propTableData.col) }, // 添加 handleAdd() { for (let i of this.propTableData.col) { if (i.isSet) { return this.Message( this.$t('basicData.device.propDlg.pleSave'), 'warning' ) } } let row = { code: '', maxValue: '', minValue: '', name: '', valueType: 'String', id: '', typeId: '', warning: false, isSet: true } this.propTableData.col.push(row) this.propTableData.sel = row }, //修改 valChange(row, index, qx) { console.log('edit', this.propTableData) //点击修改，判断是否已经保存所有操作 for (let i of this.propTableData.col) { console.log('i.isSet', i.isSet, i.id, row.id) if (i.isSet && i.id != row.id) { this.Message(this.$t('basicData.device.propDlg.pleSave'), 'warning') return false } } //是否是取消操作 if (!qx) { console.log('qx', this.propTableData.sel.id) if (!this.propTableData.sel.id) { this.propTableData.col.splice(index, 1) } return (row.isSet = !row.isSet) } //提交数据 if (row.isSet) { console.log('this.propTableData.sel', this.propTableData.sel) const v = this.propTableData.sel // 必填项判断 if (v.code == '' || v.name == '') { this.Message(this.$t('common.pleEnter'), 'warning') } else { this.$emit('confirm', this.propTableData.sel) row.isSet = false } } else { this.propTableData.sel = row row.isSet = true } }, // 删除 handleDelete(index, row) { this.$emit('delete', row.id) }, beforeClose() { this.$emit('cancel') }, Message(msg, type) { this.$message({ type: type ? type : 'info', message: msg }) } } } </script> <style lang="scss"> </style>