Problem setting focus to text box 1

[born2program]

I have a asp.net page with a vb.net backend. In my Page_Load event I have placed the following code to set focus to the password text box. It works but when I click the login button I get this error

Microsoft JScript runtime error: 'document.getElementById(...)' is null or not an object

. It runs fine if I remove the code in question. Here is the code:

Page.RegisterStartupScript("SetFocus", "<script>document.getElementById('" & txtPassword.ClientID & "').focus();</script>")

Any help is appreciated. Thanks.

 

[jmeckley]

try this instead

Page.RegisterStartupScript("SetFocus", "<script>var pwd =document.getElementById('" & txtPassword.ClientID & "'); if (pwd != null) { pwd.focus(); }</script>")

it should eliminate the error. if the textbox doesn't get set then it can't find the element. depending on when the load function is called the element may not exist yet. My js/dom skills are novice at best.

Jason Meckley
Programmer
Specialty Bakers, Inc.

 

[born2program]

Worked great! Thanks.