Simple, I assume, Javascript question.... The code looks fine, andthe problem eludes me.

A

Alex

Hi. I have this html

<body scroll="auto">
<form id="Ratings" runat="server">

<asp:ScriptManager ID="ScriptManager1" runat="Server"
EnableScriptGlobalization="true" EnableScriptLocalization="true" />

<div align="center">
<br />
<asp:Table
ID="tblFilterBy"
Width="40%"
.......
runat="server" >
<asp:TableHeaderRow runat="server">
<asp:TableHeaderCell Font-Bold="false" ForeColor="#000000"
ColumnSpan="3" runat="server">
<font style="font-size:medium; font-weight:bold">
Filter list by...
</font>
</asp:TableHeaderCell>
</asp:TableHeaderRow>
<asp:TableRow ID="TableRow_FilterBy" runat="server">
<asp:TableCell ID="TableCell_FilteryPIN" Width="40%" runat="server"
HorizontalAlign="Center" ToolTip="Filter by PIN" >
<asp:TextBox
Width="25%"
ID="TextBoxFilterByPIN"
CssClass="unwatermarked"
OnTextChanged="javascript:document.forms[0].
['cmdRemoveFilter'].disabled=(this.value=='');"
runat="server"
/>
<br />
<ajaxToolkit:TextBoxWatermarkExtender
ID="TextBoxWatermarkExtender1"
runat="server"
TargetControlID="TextBoxFilterByPIN"
WatermarkText="PIN"
WatermarkCssClass="watermarked"
Enabled="True"
/>
<asp:Button ID="cmdFilter" Width="35%" Text="Filter"
runat="server" ValidationGroup="Filter" />
<br />
<asp:Button ID="cmdRemoveFilter" Width="35%" Text="Show All"
runat="server"/>
</asp:TableCell>
</asp:TableRow>
</asp:Table>

etc, etc, etc.


Now... to me, the line
OnTextChanged="javascript:document.forms[0].
['cmdRemoveFilter'].disabled=(this.value=='');"
looks fine. Still, the compiler says:

C:\Data\...\Ratings\Ratings.aspx(46,0): error BC30456: 'javascript' is
not a member of 'ASP.ratings_aspx'.
C:\Data\...\Ratings\Ratings.aspx(46,0): error BC30451: Name 'document'
is not declared.
C:\Data\...\Ratings\Ratings.aspx(46,0): error BC30203: Identifier
expected.

Sorry, I don't get it - what's wrong with that line ? I simply want to
disable the button "cmdRemoveFilter" if the textbox
"TextBoxFilterByPIN" becomes empty.....

Thank you very much for reading this.
Alex.
 
T

Tom de Neef

Alex said:
Hi. I have this html
Click to expand...
Now... to me, the line
OnTextChanged="javascript:document.forms[0].
['cmdRemoveFilter'].disabled=(this.value=='');"
looks fine. Still, the compiler says:
Click to expand...

But it has three double-quotes ( " )
Tom
 
P

pr

Alex said:
Now... to me, the line
OnTextChanged="javascript:document.forms[0].
['cmdRemoveFilter'].disabled=(this.value=='');"
looks fine. Still, the compiler says:

C:\Data\...\Ratings\Ratings.aspx(46,0): error BC30456: 'javascript' is
not a member of 'ASP.ratings_aspx'.
Click to expand...

I don't know the markup dialect you're using, but I'd still place a
small wager that you don't want that 'javascript:'. That scheme is used
to make a URL out of a piece of script. My guess is OnTextChanged
doesn't want a URL.

Try

OnTextChanged="document.forms[0].[
'cmdRemoveFilter'].disabled=(this.value=='');"
 
L

Lasse Reichstein Nielsen

Alex said:
Hi. I have this html
Click to expand...

That's not HTML.
<body scroll="auto">
<form id="Ratings" runat="server">
Click to expand...

E.g., runat="server" is not HTML. It is an instruction to the ...
<asp:ScriptManager ID="ScriptManager1" runat="Server"
EnableScriptGlobalization="true" EnableScriptLocalization="true" />
Click to expand...

.... apparently ASP enging running on the server to generate some
HTML. I.e., this is an ASP document, which will be interpreted on
the server, not in the web browser.

<asp:TextBox
Width="25%"
ID="TextBoxFilterByPIN"
CssClass="unwatermarked"
OnTextChanged="javascript:document.forms[0].
['cmdRemoveFilter'].disabled=(this.value=='');"
runat="server"
/>
Click to expand...

(there should not be a "." between [0] and ['cmdRemoveFilter'])

This asp:TextBox ASP element is interpreted by the server and will
probably generate the HTML element:
<input type="text" id="TextBoxFilterByPIN" class="unwatermarked">
The OnTextChanged event on the ASP element is run on the server
(as specified by the 'runat="server"' attribute). I don't know
how (using AJAX or only on form submission), but its content should
be in a language and about a document model that is understood by
the server.
Instead it appears to be client side Javascript operating on a DOM
model.
Maybe removing the 'runat="server"' attribute will help, but you
should ask someone who knows ASP to get qualified help.


....
Sorry, I don't get it - what's wrong with that line ? I simply want to
disable the button "cmdRemoveFilter" if the textbox
"TextBoxFilterByPIN" becomes empty.....
Click to expand...

In HTML with client side javascript, you would have the attribute
onchange="this.form.elements['cmdRemoveFilter'].disabled =
(this.value=='');"

You should never need to write "javascript:" in an HTML page.

/L
 

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