asked on

passing textbox id in javascript

I'm doing the following on the server side

oButton.Attributes.Add("onclick", "MyFunction(this.ID)")

on the client side I have the following javascript function

MyFunction(theId)
{

alert(theId);

}

But I get an error Object expected. How can I pass the textboxes id in dynamicall because they are part of a user control and the names are dynamic. Thanks.

Sammy

Sam_Jayander

Hi,

use,
oButton.Attributes.Add("onclick", "MyFunction(this.id)")

while accessing the id-property in javascript you must use "id" and not "ID".

Regards,
--Sam.

ASKER CERTIFIED SOLUTION

bele04

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EtherZa

oButon.ID is not a safe value as it gets chaned by the compiler when the control is contained with another control. Use oButton.ClientID rather.

Better still is to use the following:

Code:
oButton.Attributes.Add("onclick", "MyFunction(this)")

or if you are using asp.net 2: <asp:button runat="server" id="btn" OnClientClick="javascript:MyFunction(this);" />

HTML:
<script type="text/javascript">
function MyFunction(obj)
{
alert("Object id: " + obj.id) // will show you the id of the button that was clicked; alternatively "obj" is the button object to be manipulated.
}
</script>