Call a javascript function from ASP page

Mark · Jul 27, 2006

I've searched a bunch of groups, and they say this can be done, but for
some reason, I can't get it to work.

Here's my ASP page:

<% @ Language=VBScript %>
<Script language=javascript>
function cont(strTitle){
if("undefined"!=typeof strTitle){
window.opener.location='somepage.asp?title=' + strTitle;
window.close();
}
else
window.close();
}
</script>

<%
strTitle=Upload.form("title")
Do Stuff

cont(strTitle)
%>

<body ONLOAD="cont(<%=strTitle%>">
</body>

What I want to happen, is if this page gets called from a form and
title is null or undefined, then close the window. Otherwise, do
something, then close the window with the javascript call.

Thanks,

- Mark

Larry Bud · Jul 27, 2006

Mark said:
I've searched a bunch of groups, and they say this can be done, but for
some reason, I can't get it to work.

Here's my ASP page:

<% @ Language=VBScript %>
<Script language=javascript>
function cont(strTitle){
if("undefined"!=typeof strTitle){
window.opener.location='somepage.asp?title=' + strTitle;
window.close();
}
else
window.close();
}
</script>

<%
strTitle=Upload.form("title")
Do Stuff

cont(strTitle)
%>

<body ONLOAD="cont(<%=strTitle%>">
</body>

What I want to happen, is if this page gets called from a form and
title is null or undefined, then close the window. Otherwise, do
something, then close the window with the javascript call.

You're missing a closing paren ) in the onload

Mark · Jul 27, 2006

Good eye, but sadly, that's just my typing the code into the post, not
in my code.

Thanks.

Aaron Bertrand [SQL Server MVP] · Jul 27, 2006

Good eye, but sadly, that's just my typing the code into the post, not

in my code.

Another error I spotted is that I assume strTitle should have quotes around
it. So, it should be

<body onload="cont('<%=strTitle%>');">

(Assuming strTitle can't have ' in it, if so, then

<body onload="cont('<%=Replace(strTitle, "'", "\'")%>');">

But since you didn't tell us what "doesn't work" means, I have no idea if
I'm wasting my time looking at the syntax or if I should focus on your
approach (because you can't call cont() -- a client-side JavaScript
function -- from ASP, which runs on the server, not on the client).

It would be helpful if you better define "can't get it to work". Are you
getting an error message? If so, what is it? Or, how is it not working the
way you would expect? Is the window not launching the right page, or is it
only launching when the title is empty instead of the opposite, or is it
always opening, or is it never opening?

Have you considered this approach instead?

<script language=javascript>
function checkit()
{
<%
strTitle=Upload.form("title")
' Do Stuff

if strTitle <> "" then
%>
window.opener.location.href = 'somepage.asp?title=<%=strTitle%>';
<% end if %>
window.close();
}
</script>
<body onload="checkit();">

Mark · Jul 27, 2006

The issue is, as you say, calling client-side java with ASP.

Your approach looks very promicing. I'm going to give it a shot.

Thanks,

- Mark

Mark · Jul 27, 2006

Works great. Thanks for the instruction.

- Mark

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Call a javascript function from ASP page

Mark

Larry Bud

Mark

Aaron Bertrand [SQL Server MVP]

Mark

Mark

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