element ui 动态合并单元格_Vue动态控制default-expand-all展开/关闭

element-ui 动态控制树形菜单 default-expand-all 实现展开/关闭功能

伪代码如下：

            //业务代码          

js如下：

handleOpen() {      //展开      this.refreshTree = false;      this.isExpand = true;      this.$nextTick(() => {        this.refreshTree = true;      });    },    handleClose() {      //收起      this.refreshTree = false;      this.isExpand = false;      this.$nextTick(() => {        this.refreshTree = true;      });    },

合并

展开