Web Forms :: Incorrect ClientId In Child Page?
Mar 22, 2010
I have a page that belongs to a master page, and I'm having trouble getting the correct clientId to use in javascript. I have a textbox defined as:
<asp:TextBox ID="ui_tbDOB" runat="server" Width="75px" onchange="SetAge();"></asp:TextBox>
In my javascript SetAge() function I go to get the field by doing this:
var ui_tbDOB = document.getElementById('<%=ui_tbDOB.ClientID %>');
When I view my page source my textboxId ends up being:
<input name="ctl00$cphMainBody$ui_tbDOB" type="text" value="06-06-1983" id="ctl00_cphMainBody_ui_tbDOB" onchange="SetAge();" style="width:75px;" />
All good so far, except that my javascript ends up being: var ui_tbDOB = document.getElementById('ctl00_cphMainBody_ui_tbDOB');
, the two don't match up, and my javascript fails:
'ctl00_cphMainBody_ui_tbDOB' is not equal to 'ctl00$cphMainBody$ui_tbDOB'
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