Acessing textbox in usercontrol

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This is my ascx code:

XML

<script language="javascript" type="text/javascript">
           function fnMsg() {
               var value = document.getElementById('txt').value

           }
       </script>

HTML

<input id="txt" style="WIDTH: 12%"  type="text" maxlength="10" name="txt"  runat="server"/>
  <input type="button"  runat="server" value="click"  önclick="fnMsg();" style="width: 33px" />

I couldnt get the value of text box in javascript.

The error is document.getElementById('txt') is undefined.

Is there anyway to access the value

Posted 14-Nov-12 20:40pm

Divya RS

Updated 14-Nov-12 20:50pm

Manfred Rudolf Bihy

v3

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Comments

Anshu BM 15-Nov-12 2:48am

Is there any id as "txtAdmitFrom" in your code

Manfred Rudolf Bihy 15-Nov-12 2:51am

OP changed his code inconsistently, I fixed it.

2 solutions

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n.podbielski · Accepted Answer · 2012-11-14T21:05:00

Solution 2

If you are using asp.net 4 you can use

ASP.NET

<asp:Textbox ClientIdMode="Static">

Instead of your server side html tag.
Or obtain client id of this tag in aspx/ascx

HTML

var id="<%=txt.ClientID %>";

Posted 14-Nov-12 21:05pm

n.podbielski

Updated 14-Nov-12 21:08pm

v2

Comments

Divya RS 15-Nov-12 3:58am

thank u both n.podbielski and Manfred R.Bihy both of the solutions worked out for me. . .

n.podbielski 15-Nov-12 4:04am

No problem. Glad I could help.

Manfred Rudolf Bihy 15-Nov-12 4:16am

Glad it helped!

Manfred Rudolf Bihy · Accepted Answer · 2012-11-14T20:56:00

The ID attribute of a HTML tag that is modified with the runat="Server" attribute changes. This ID is only available on the server side now and to get the ID of that tag as it is rendered in the HTML sent to the browser you'll have to user <%= txt.ClientID %>

See here:

XML

<script language="javascript" type="text/javascript">
    function fnMsg() {
        var value = document.getElementById('<%= txt.ClientID %>').value

    }
</script>

Regards,

— Manfred