How to check a checkbox using Javascript

's Computer Specifications

's Computer Specifications

"AmitKu" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...

> I am trying to make it so that checking one check box checks another
> using no postbacks (so basically that means using Javascript). Above
> is my code, and for some reason it just doesn't work. Any ideas?

The checkbox property is 'checked', not 'check' e.g. mycheck.checked = true;

's Computer Specifications

Hi Amit,

In addition to Mark's reply use control.ClientID property, don't set name
attribute directly because it is used internally for checkbox state retrival:

<script type="text/javascript">
function CheckChange()
{
var mycheck = document.getElementById('<%=test.ClientID %>');
mycheck.checked = true;
}
</script>

<asp:CheckBox ID="test" runat="server"/>
<asp:CheckBox ID="CheckBox1" onclick="CheckChange()" runat="server" />

--
Milosz

"AmitKu" wrote:

> <script>
> function CheckChange()
> {
> var mycheck = document.getElementById('test');
> mycheck.check = true;
> }
> </script>
>
> <body>
> <form id="form1" runat="server">
> <asp:CheckBox ID="test" runat="server" name="test" />
> <asp:CheckBox ID="CheckBox1" onclick="CheckChange()"
> runat="server" />
> </form>
> </body>
> </html>
>
>
> I am trying to make it so that checking one check box checks another
> using no postbacks (so basically that means using Javascript). Above
> is my code, and for some reason it just doesn't work. Any ideas?
>
> Btw instead of the above javascript, I'd rather write "test.check =
> true" but that fails and Firefox's error console says "test is not
> defined"
>
> Thanks,
> Amit
>
>

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