element-ui表格带复选框使用方法及默认选中方法

// 初始查询
    public loadData() {
        // 提交获取返回数据
        let that: any = this;
        AuditApi.getAuditItemList({status: 1}).then( (responseJSON: any) => {
            this.auditItemList = responseJSON;
            that.$nextTick(()=> {
                that.toggleSelection(that.auditItemList);
            });
        });
    }

public toggleSelection(rows: any) {
        let that: any = this;
        if (rows) {
            rows.forEach((item: any) => {
                //设置该表格选框选中
                that.$refs.table.toggleRowSelection(item);
            });
        } else {
            that.$refs.table.clearSelection();
        }
    }