asked on

Passing variables to javascript input box

This should be an easy 500 points for someone. What I need is probably quite simple to do. I have two javascript input boxes that I need to populate with data from my vb.net code behind.
What is the syntax for getting the data from my vb.net variables into the javascript input boxes?

<script runat="server">         
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)        
        Dim username, password As String
        username = somevalue
        password = somevalue             
    End Sub
</script> 
 
    <input name="username" value="exchangetest1" type="hidden" class="txt" id="username" />
    <input name="password" value="12345" type="hidden" class="txt" id="password" onfocus="g_fFcs=0" />	  
<script type="text/javascript">  
  document.forms(0).action='https://email.mycompany.com/CookieAuth.dll?Logon';
  document.forms(0).submit();
 </script>

Open in new window

TimCottee

Hello SouthDallas40,

Simplest is as below, simply adding runat="server" allows you to assign values directly.

Regards,

TimCottee


  <script runat="server">         
      Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)        
          username.value = somevalue
          password.value = somevalue             
      End Sub
  </script>  
      <input name="username" value="exchangetest1" type="hidden" class="txt" id="username" runat="server" />
      <input name="password" value="12345" type="hidden" class="txt" id="password" onfocus="g_fFcs=0" runat="server"/>        
  <script type="text/javascript">  
    document.forms(0).action='https://email.mycompany.com/CookieAuth.dll?Logon';
    document.forms(0).submit();
 </script>

Open in new window

SouthDallas40

ASKER

Forgive me, Tim. Thanks for your prompt response, but I am a complete newbie at asp.net programming. How would I make the value assignments to javascript in this case?
<input name="username" value="username.value" type="hidden" class="txt" id="username" runat="server" />
<input name="password" value="password.value" type="hidden" class="txt" id="username" runat="server" />

SOLUTION

TimCottee

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

SouthDallas40

ASKER

I think I understand what you're saying now, Tim.
But, when I add the suggested code I get an error:
username.value = "exchangetest1"
Error:
Name 'username' is not declared

SouthDallas40

ASKER

OK, I am past that error. I just needed to put ID="username" in the input box.
But how should I code the value= in the input box?
Should it automatically overwrite the default value currently in the string?
<input name="username" value="exchangetest1" type="hidden" class="txt" id="username" runat="server" />

ASKER CERTIFIED SOLUTION

SouthDallas40

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

SouthDallas40

ASKER

Closing

SouthDallas40

ASKER

Closing

SouthDallas40

ASKER

Closing my account.