首选定义数组，然后进行操作时遍历数组获取选中值

function getSelect(userId) {            //var userId = userCheckBox.value;            //标记删除还是添加            var isAdd = true;            //如果已经存在,那么删除            for (var i = 0; i < this.UserIdArray.length; i++) {                //集合中是否存在用户id                if (this.UserIdArray[i] == userId) {                    //删除集合中的用户id                    this.UserIdArray = this.UserIdArray.splice(0, i).concat(this.UserIdArray.splice(i + 1, this.UserIdArray.length));                    //标记是删除                    isAdd = false;                    break;                }            }            //如果是添加,那么添加到数组            if (isAdd) {                this.UserIdArray.push(userId);            }

操作方法

function Delete(){     if (this.UserIdArray.length < 1) {                alert("请选择要删除的数据！");                return false;            }            else if (confirm("你确定要删除选中的数据吗？")) {                var str = "";                for (var i = 0; i < this.UserIdArray.length; i++) {                    str += this.UserIdArray[i];                    if (i + 1 != this.UserIdArray.length) {                        str += ",";                    }                }                //str 即为选中值    }}