table选中某条数据删除功能

deleteData() {

                if (!this.selection.length) this.$Message.warning("请选择要删除的行！");

                let _arr = [];

                this.tableData.forEach((ele, index) => {

                    if (this.selection.indexOf(index) < 0) _arr.push(ele);

                });

                this.tableData = _arr;

                this.selection = [];

            }