element-ui 表格可編輯添加刪除

<template>
  <div id="Cold_all">
    <div class="Cold_Left">
      <el-row>
        <div class="font_style"> 1.輸入計算基本數據</div>
        <el-col :span="24">
         
          <el-table
            size="mini"
            :data="master_user.data"
            border
            style="width: 100%;margin:auto"
            highlight-current-row
          >
            <el-table-column type="index"></el-table-column>
            <el-table-column
              v-for="(item,index) in master_user.columns"
              :label="item.label"
              :prop="item.prop"
              :width="item.width"
              :key="index"
            >
              <template slot-scope="scope">
                <span v-if="scope.row.isSet">
                  <el-input size="mini" placeholder="請輸入內容" v-model="master_user.sel[item.prop]"></el-input>
                </span>
                <span v-else>{{scope.row[item.prop]}}</span>
              </template>
            </el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <span
                  class="Insert_Cold"
                  style="cursor: pointer;"
                  @click.stop="saveRow(scope.row,scope.$index)"
                >保存</span>
                <span
                  class="Edit_Cold"
                  style="cursor: pointer;"
                  @click="editRow(scope.row,scope.$index)"
                >編輯</span>
                <span
                  class="Delete_Cold"
                  style="cursor: pointer;"
                  @click="deleteRow(scope.$index,master_user.data)"
                >刪除</span>
              </template>
            </el-table-column>
          </el-table>
        </el-col>
        <el-col :span="24">
          <div class="el-table-add-row" style="width: 99.2%;" @click="add()">
            <span>+ 添加</span>
          </div>
        </el-col>
      </el-row>
    </div>
  </div>
</template>

<script>
export default {
  name: "",
  data() {
    return {
      master_user: {
        sel: null, //選中行
        columns: [
          
          {
            prop: "OutdoorTDB",
            label: "室外計算溫度(℃)",

          },
          {
            prop: "IndoorTDB",
            label: "室內計算溫度(℃)"
          },
          {
            prop: "TdbStartTime",
            label: "運行開始時間"
          },
          {
            prop: "TdbEndTime",
            label: "運行結束時間"
          }
        ],
        data: []
      }
}
<script>

methods: {
    //基本輸入列表
    add() {
      for (let i of this.master_user.data) {
        if (i.isSet) return this.$message.error("請先保存當前編輯項");
      }
      let j = {
        index: "",
        OutdoorTDB: "",
        IndoorTDB: "",
        TdbStartTime: "",
        TdbEndTime: "",
        isSet: true
      };
      this.master_user.data.push(j);
      this.master_user.sel = JSON.parse(JSON.stringify(j));
    },
    saveRow(row, index) {
      //保存
      let data = JSON.parse(JSON.stringify(this.master_user.sel));
      for (let k in data) {
        row[k] = data[k];
      }
      row.isSet = false;
    },
    editRow(row) {
      //編輯
      for (let i of this.master_user.data) {
        if (i.isSet) return this.$message.error("請先保存當前編輯項");
      }
      this.master_user.sel = row;
      row.isSet = true;
    },
    deleteRow(index, rows) {
      //刪除
      rows.splice(index, 1);
    },
components: {}
}