Finding control

The following does not work:

var EtxtDOB = $get('<%=FormView1.FindControl("frmEd开发者_开发问答itPerson").FindControl("EtxtDOB").ClientID %>');

How can I find this nested control in javascript?

I find it's a lot clearer code-wise to explicitly emit the IDs of the controls you want to access via Javascript in the page's code-behind. Something like:

Page.RegisterClientScriptBlock("clientIDs", "var myControlID = '" + myControl.ClientID + "';");

Then you can access this anywhere in your client-side script and it's a lot cleaner:

var ExtODB = getElementById(myControlID);

If you want to get fancy create a utility function that does this for you... or create a custom attribute that automatically does this.

Usually you use 'getElementById' or similar from Javascript. If your control is named 'EtxtDOB' then this might work for you:

document.getElementById('EtxtDOB').setAttribute()....

(Not sure what the $get refers to...)