vue表格中添加一条数据且可编辑

1.vue中在数据表格中添加一行，可直接在表格中编辑；
最后出来的图片：

直接来代码：

表格代码:

 <el-table
                     height="310"
                     :data="tableData"
                     style="width: 98%;margin-left: 10px">
                     <el-table-column prop="" label="文件字段循序">
                       <template slot-scope="scope">
                         {{scope.$index + 1}}
                       </template>
                     </el-table-column>
                     <el-table-column prop="sysName" label="系统字段名称">
                       <template slot-scope="scope">
                         <el-input size="mini" v-show="scope.row.show" v-model="scope.row.sysName"></el-input>
                         <span v-show="!scope.row.show">{{scope.row.sysName}}</span>
                       </template>
                     </el-table-column>
                     <el-table-column prop="platformName" label="平台字段名称">
                       <template slot-scope="scope">
                         <el-input size="mini" v-show="scope.row.show" v-model="scope.row.platformName"></el-input>
                         <span v-show="!scope.row.show">{{scope.row.platformName}}</span>
                       </template>
                     </el-table-column>
                     <el-table-column prop="platformName" label="类型">
                       <template slot-scope="scope">
                         <el-input size="mini" v-show="scope.row.show" v-model="scope.row.type"></el-input>
                         <span v-show="!scope.row.show">{{scope.row.type}}</span>
                       </template>
                     </el-table-column>
                     <el-table-column prop="platformName" label="长度">
                       <template slot-scope="scope">
                         <el-input size="mini" v-show="scope.row.show" v-model="scope.row.length"></el-input>
                         <span v-show="!scope.row.show">{{scope.row.length}}</span>
                       </template>
                     </el-table-column>
                     <el-table-column prop="context" label="备注">
                       <template slot-scope="scope">
                         <el-input size="mini" v-show="scope.row.show" v-model="scope.row.context"></el-input>
                         <span v-show="!scope.row.show">{{scope.row.context}}</span>
                       </template>
                     </el-table-column>
                     <el-table-column prop="" label="操作">
                       <template slot-scope="scope">
                         <el-dropdown trigger="click">
                           <el-button type="text" size="mini">操作
                             <i class="el-icon-arrow-down el-icon--right"></i>
                           </el-button>
                           <el-dropdown-menu slot="dropdown">
                             <el-dropdown-item>
                               <el-button @click="handleDelete(scope.$index)" class="btn-text-red" type="text" size="mini"
                                          icon="el-icon-delete">删除
                               </el-button>
                             </el-dropdown-item>
                             <el-dropdown-item>
                               <el-button @click="scope.row.show =true" type="text" size="mini" icon="el-icon-edit">编辑</el-button>
                             </el-dropdown-item>
                             <el-dropdown-item>
                               <el-button @click="save1(scope.row)" type="text" size="mini" icon="el-icon-success">保存</el-button>
                             </el-dropdown-item>
                           </el-dropdown-menu>
                         </el-dropdown>
                       </template>
                     </el-table-column>
                   </el-table>

 methods: {
      // 保存
      save1(row) {
            row.show = false
      },
      // 添加点击按钮
      handleAdd() {
        this.tableData.push({
          sysName: '',
          platformName: '',
          context: '',
          show: true
        })
      },
      handleDelete(index) {
          this.tableData.splice(index, 1)
         
      }
      }