js 列表选择

Posted 2020-11-02 happygx

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

    }

}