单击复选框时获得复选框列表的选中/未选中状态 [英] get the checked/unchecked state of checkboxlist when clicking a checkbox

问题描述

海，

我有一个ASP复选框列表，其中包含从数据库绑定的项目.它具有以下方式的项目.

PO_1
PO_2
DNPR_1
DNPR_2
DNPR_3

选中任何带有"DNPR"的复选框时，所有其他复选框都应取消选中并禁用.

我必须使用javascript来实现.

为此，我想在单击复选框列表中的复选框时获取选中/未选中状态以及选中/未选中复选框的ID.

我尝试使用onclick javascript事件来实现此目的.但是即使我选中了一个复选框，onclick事件中的checked = false也是如此.

在哪个javascript事件中，我得到了选中/未选中复选框的状态.

请帮忙.

问候，
Regeesh Joseph

Hai,

I have an asp checkboxlist with items bound from database. It has items in the following manner.

PO_1
PO_2
DNPR_1
DNPR_2
DNPR_3

When any checkbox with ''DNPR'' is checked, all other checkboxes should be unchecked and disabled.

I have to implement it using javascript.

For that, I want to get the checked/unchecked state and the id of the checked/unchecked checkbox when clicking a checkbox in checkboxlist.

I tried using the onclick javascript event to achieve this. But checked=false in the onclick event evenif I checked a checkbox.

In which javascript event, I get the state of the checkbox I checked/unchecked.

Please help.

regards,
Regeesh Joseph

推荐答案

在单击事件中将起作用....

in click event it will work....

function myfn() {
            var dlist = document.getElementById("CheckBoxList1");
            var count = dlist.cells.length;
            for (var i = 0; i < count; i++) {
                var cId = "CheckBoxList1_" + i;
//cId is the dynamic id created for checkboxes in the list
                var cbox = document.getElementById(cId);
                if (cbox.checked == true) {
                    alert("ok");
                }
            }
        }

<asp:CheckBoxList ID="CheckBoxList1" runat="server"

            onclick="myfn()">
            <asp:ListItem>one</asp:ListItem>
            <asp:ListItem>two</asp:ListItem>
            <asp:ListItem>three</asp:ListItem>
            <asp:ListItem>four</asp:ListItem>
        </asp:CheckBoxList>

这对我有用.

this is working for me..

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