vue2点击左侧的树节点（el-tree）定位到对应右侧树形表格(el-table)的位置，树形表格懒加载

表格代码

    <el-table ref="singleTable" :data="detailsList" highlight-current-row="" row-key="detailId" @row-click="clickTableRow" //左键单击@row-contextmenu="rightClick" //右键单击@cell-dblclick="doubleClick" //双击单元格:cell-style="columnbackgroundStyle" //高亮可编辑单元格><el-table-column type="index" width="80" label="序号" align="center" fixed=""> </el-table-column><el-table-column property="code" label="编码" width="160" fixed=""></el-table-column><el-table-column property="name" label="名称" width="120" align="center" :key="index"><template slot-scope="scope"><span><el-input v-if="scope.row[scope.column.property + 'Show']" clearable="" v-model="scope.row.name" @keyup.enter.native="onBlur(scope.row, scope.column)" @blur="onBlur(scope.row, scope.column)"></el-input><span v-else="">{{ scope.row.name }}</span></span></template></el-table-column></el-table>

操作菜单代码

<div id="menu" class="menu"><ul class="ul1 list-paddingleft-2"><li class="li1" ref="menu1" @mouseover="showChild" @mouseout="hideChild"><span>新增下级</span><i class="el-icon-arrow-right" :style="cssStyle.iconfont"></i><ul ref="childMenu1" class="ul2 list-paddingleft-2"><li class="li2" @click="chooseList()"><span>选择下级</span></li><li class="li2" @click="addList()"><span>补充下级</span></li></ul></li><li class="li1" @click="delMenu()"><span>删除</span></li></ul>
</div>

js代码

// 左键单击事件
clickTableRow(row, column, event) {var menu = document.querySelector("#menu");menu.style.display = "none";
},// 右键单击
rightClick(row, column, event) {this.currentRow = row //存储当前选中的行var menu = document.querySelector("#menu"); //展示操作菜单event.preventDefault();// 页面只读的时候不展示if (this.isRead) {menu.style.display = "none";return}// 根据事件对象中鼠标点击的位置，进行定位menu.style.left = event.clientX + "px";menu.style.top = event.clientY + "px";// 改变自定义菜单的隐藏与显示menu.style.display = "block";this.setCurrent(row);
},
setCurrent(row) {this.$refs.singleTable.setCurrentRow(row);
},
// 展示菜单子级
showChild() {this.$refs.menu1.style.backgroundColor = '#ecf5ff'this.$refs.childMenu1.style.display = 'block'
},
// 隐藏菜单子级
hideChild() {this.$refs.menu1.style.backgroundColor = '#fff'this.$refs.childMenu1.style.display = 'none'
},
// 双击单元格
doubleClickTop(row, column) {// 页面只读时不触发if (this.isRead) {return}// 避免点击过快导致多个输入框处于焦点状态this.$set(row,column.property + 'Show',false)this.$set(row,column.property + 'Show',true)
},
// 输入框鼠标失焦或者键盘回车时触发
onBlur(row, column) {this.$set(row,column.property + 'Show',false)// 请求后台更改数据this.getDetailsList(row)
},
// 根据输入的公式计算出结果（引入main.js工具库）
calculate() {try {this.result = this.mathjs.evaluate(输入框绑定的值);} catch (error) {this.result = '无效的表达式';}
},
// 高亮可编辑单元格
columnbackgroundStyle({ row, column, rowIndex, columnIndex }){if (this.isRead) {return}var columnList=['name']if (columnList.indexOf(column.property)>-1) {return 'background:rgb(249 239 72 / 16%);'}
},

样式部分

.menu:{position: absolute;display: none;box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12), 0 0 6px rgba(0, 0, 0, 0.04);background: #ffffff;cursor: pointer;color: #606266;width: 200px;border: 1px solid #e4e7ed;font-size: 13px;z-index:999
}
.ul1:{list-style: none;margin: 0px;padding: 0px;
}
.li1:{padding: 0px 10px;height: 30px;line-height: 30px;position: relative;box-sizing: border-box;text-indent: 8px;
}
.ul2:{display: none;position: absolute;left: 200px;top: 0px;width: 200px;border: 1px solid #e4e7ed;box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12), 0 0 6px rgba(0, 0, 0, 0.04);background-color: #fff;
}
.li2:{background-color: #fff;
}