Geting Checkboxlist value in javascript

[Satheesh Babu B]

hai..
am having a checkboxlist..n ow how do i get the value of the checkbox
that is checked in checkboxlist using javascript?

Thanks in advance....
Regards,
Satheesh

[Satheesh Babu B]

i am Simply giving values 1,2,3,4 as text and value for the checkbox
item in the checkboxlist.if i check the checkbox with text "1".How
should i get that value using javascript..

I think its clear now..

[Bruce Barker]

there are no values set for the checkboxes, so the value is alway empty,
but your are interested in if the the user checked the checkbox. in
javascript its just:

if (document.getEl ementById("Chec kBoxList1_0").c hecked)
{
// do something with checked box
}
note: the value of a checkbox is the value set in tag, and has nothing to do
with whether checked or not. the value is what is posted back in the
name/value pair if the box is checked.

-- bruce (sqlwork.com)
"Patrick.O. Ige" <pa********@opt usnet.com.au> wrote in message
news:ut******** ******@TK2MSFTN GP14.phx.gbl...

Is it DataBinded or is it in any other controls?
Patrick

"Satheesh Babu B" <b.************ @gmail.com> wrote in message
news:11******** **************@ o13g2000cwo.goo glegroups.com.. .

The code generated is...

<table id="CheckBoxLis t1" border="0" style="Z-INDEX: 104; LEFT: 384px;
POSITION: absolute; TOP: 112px">
<tr>
<td><input id="CheckBoxLis t1_0" type="checkbox"
name="CheckBoxL ist1:0" /><label for="CheckBoxLi st1_0">one</label></td>
</tr><tr>
<td><input id="CheckBoxLis t1_1" type="checkbox"
name="CheckBoxL ist1:1" /><label for="CheckBoxLi st1_1">2</label></td>
</tr><tr>
<td><input id="CheckBoxLis t1_2" type="checkbox"
name="CheckBoxL ist1:2" /><label for="CheckBoxLi st1_2">3</label></td>
</tr><tr>
<td><input id="CheckBoxLis t1_3" type="checkbox"
name="CheckBoxL ist1:3" /><label for="CheckBoxLi st1_3">4</label></td>
</tr>
</table>

Regards,
Satheesh

[RD Law]

Did you ever find a solution to this? I am having a similar issue
without much luck of a solution. Have spent a few hours to no avail.

This is what I have found: When creating a CheckBoxList, at runtime it
is rendered as an HTML table. I, like you, need to get the value of
items checked, but am only receiving "on" for the value of all items,
checked or not. Looking at my source code of the rendered page, there
are no "Value" tags for the check boxes. I can get the "Label" value,
but that is a descriptive item; I need the value that I set in the
"DataValueField " at design time.

My CheckBoxList is named "cblist_facilit ies". I have a "Test" button
which calls the following code:

###

function Button1_onclick () {
var cblist = "cblist_facilit ies";
var chkList1= document.getEle mentById(cblist );

var arrayOfCheckBox es= chkList1.getEle mentsByTagName( "input");
var arrayOfCheckBox Labels= chkList1.getEle mentsByTagName( "label");
var listcount = arrayOfCheckBox es.length;
var displ="";

alert(listcount + " items in list.");

for(var i=0;i<arrayOfCh eckBoxes.length ;i++) {
displ= "" + (i+1) + ": " + arrayOfCheckBox es[i].checked + " - "
+ arrayOfCheckBox Labels[i].innerText;
alert(displ);
alert(arrayOfCh eckBoxes[i].value);
}

}

###

When run, the first alert correctly displays the number of checkboxes.
The second alert ("displ") correctly displays whether the checkbox is
checked or not and the correct descriptive label. However, the third
alert (...value) displays "on" for all checkboxes, checked or not.

Thoughts?

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[Bruno Alexandre]

this is what I'm using in a RabioButoonList (and it's Online and work
perfectly)

RBL code
-----------------------
<asp:RadioButto nList ID="rblLoanType " runat="server"
CssClass="wizar dFormRadio"

Font-Bold="False" RepeatLayout="F low" Width="210px" >

<asp:ListItem Value="Normal Konto">Normal Konto</asp:ListItem>

<asp:ListItem Value="Udskudt forste betaling">Udsku dt første
betaling</asp:ListItem>

<asp:ListItem Value="Kampagne konto">Kampagne konto</asp:ListItem>

</asp:RadioButton List>

-----------------------

JS code
-----------------------
function getAmount(nform ) {

var a = document.getEle mentById('<%= rblLoanType.Cli entID %>_0').checked ;

var b = document.getEle mentById('<%= rblLoanType.Cli entID %>_1').checked ;

var c = document.getEle mentById('<%= rblLoanType.Cli entID %>_2').checked ;

if ( nform == 0 || a == true) {

...

-----------------------

hop it helps
--

Bruno Alexandre
København, Danmark

"a portuguese in Denmark"
"RD Law" <no****@yahoo.c omescreveu na mensagem
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..

>
Did you ever find a solution to this? I am having a similar issue
without much luck of a solution. Have spent a few hours to no avail.

This is what I have found: When creating a CheckBoxList, at runtime it
is rendered as an HTML table. I, like you, need to get the value of
items checked, but am only receiving "on" for the value of all items,
checked or not. Looking at my source code of the rendered page, there
are no "Value" tags for the check boxes. I can get the "Label" value,
but that is a descriptive item; I need the value that I set in the
"DataValueField " at design time.

My CheckBoxList is named "cblist_facilit ies". I have a "Test" button
which calls the following code:

###

function Button1_onclick () {
var cblist = "cblist_facilit ies";
var chkList1= document.getEle mentById(cblist );

var arrayOfCheckBox es= chkList1.getEle mentsByTagName( "input");
var arrayOfCheckBox Labels= chkList1.getEle mentsByTagName( "label");
var listcount = arrayOfCheckBox es.length;
var displ="";

alert(listcount + " items in list.");

for(var i=0;i<arrayOfCh eckBoxes.length ;i++) {
displ= "" + (i+1) + ": " + arrayOfCheckBox es[i].checked + " - "
+ arrayOfCheckBox Labels[i].innerText;
alert(displ);
alert(arrayOfCh eckBoxes[i].value);
}

}

###

When run, the first alert correctly displays the number of checkboxes.
The second alert ("displ") correctly displays whether the checkbox is
checked or not and the correct descriptive label. However, the third
alert (...value) displays "on" for all checkboxes, checked or not.

Thoughts?

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[Sabrina Lanzoni Goncalves]

>i am Simply giving values 1,2,3,4 as text and value for the >checkbox
item in the checkboxlist
[cut]

Hello, all,
I also had to face such a thing and I solved it in a quite simple way.
When loading your page, after doing Page.DataBind() (or
CheckBoxList1.D ataBind(), it's the same), you should loop on your
checkbox items, and add an "onclick" attribute. This attribute should
call a function that contains, as an argument, the value (or text,
depending on what you have to do with it; for me it's necessary a text)
of your list item. Here it is my code:

On aspx page:
<script runat="server">

protected void Page_Load(objec t sender, EventArgs e)
{
this.DataBind() ;
foreach (ListItem var in CheckBoxList1.I tems)
{
// aggiungo anche l'onclick
var.Attributes. Add("onclick", "javascript:Sho wValue('" +
var.Text + "');");
}
}
</script>

Javascript code:
function ShowValue(ctl)
{
alert(ctl);
}

Don't forget of treating var.Text (or var.Value) as a string.

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