Call a javascript function from ASP page

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  • Mark
    #1

    Call a javascript function from ASP page

    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=VBScri pt %>
    <Script language=javasc ript>
    function cont(strTitle){
    if("undefined"! =typeof strTitle){
    window.opener.l ocation='somepa ge.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

    Tags: None
    • Larry Bud
      #2
      Re: Call a javascript function from ASP page


      Mark wrote:
      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=VBScri pt %>
      <Script language=javasc ript>
      function cont(strTitle){
      if("undefined"! =typeof strTitle){
      window.opener.l ocation='somepa ge.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

        Comment

        • Mark
          #3
          Re: Call a javascript function from ASP page

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

          Thanks.

            Comment

            • Aaron Bertrand [SQL Server MVP]
              #4
              Re: Call a javascript function from ASP page

              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(strTi tle, "'", "\'")%>');" >

              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=javasc ript>
              function checkit()
              {
              <%
              strTitle=Upload .form("title")
              ' Do Stuff

              if strTitle <"" then
              %>
              window.opener.l ocation.href = 'somepage.asp?t itle=<%=strTitl e%>';
              <% end if %>
              window.close();
              }
              </script>
              <body onload="checkit ();">


                Comment

                • Mark
                  #5
                  Re: Call a javascript function from ASP page

                  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

                    Comment

                    • Mark
                      #6
                      Re: Call a javascript function from ASP page

                      Works great. Thanks for the instruction.

                      - Mark

                        Comment

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