confirm msg on onUnload?

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  • Nithya Venkatachalam
    #1

    confirm msg on onUnload?

    Hi,

    Is there anyway to display a confirm msg onUnload of a page?

    I mean to say if iam calling onUnload=javasc ript:check();

    and in check(){

    if(confirm("che ck?"))
    {
    unload the page;
    }
    else
    {
    Dont unload , just come back to the previous state( i have some
    values in text fields to be retained)
    }
    }

    I want to call this function on Unload.
    Suggest me a way.

    Tags: onunload confirm, onunload confirmation
    • Martin Honnen
      #2
      Re: confirm msg on onUnload?



      Nithya Venkatachalam wrote:
      [color=blue]
      > Is there anyway to display a confirm msg onUnload of a page?
      >
      > I mean to say if iam calling onUnload=javasc ript:check();
      >
      > and in check(){
      >
      > if(confirm("che ck?"))
      > {
      > unload the page;
      > }
      > else
      > {
      > Dont unload , just come back to the previous state( i have some
      > values in text fields to be retained)
      > }
      > }
      >
      > I want to call this function on Unload.[/color]

      You should set
      event.returnVal ue = 'Check?'
      e.g.
      <body onunload="event .returnValue = 'Check?';">
      that is all that is allowed, then your message will appear in the same
      confirmation dialog the default confirmation message is in.

      --

      Martin Honnen
      Attention Required! | Cloudflare
      http://JavaScript.FAQTs.com/

        Comment

        • Michael Winter
          #3
          Re: confirm msg on onUnload?

          On 30 Aug 2004 06:22:00 -0700, Nithya Venkatachalam <vnithya@gmail. com>
          wrote:

          I'm assuming this is for the Web. If you're actually writing something for
          a more restricted environment where you know precisely what browsers will
          be used, say so. The advice might change.
          [color=blue]
          > Is there anyway to display a confirm msg onUnload of a page?[/color]

          The practical answer is no. Whilst you *might* be able to display a
          message or perform some action, you certainly can't prevent the browser
          from closing[1]. The only reliable approach is to ensure you cater for a
          user leaving abnormally (setting automatic session timeouts on the server,
          etc.).

          Moreover, any script approach can be disabled or skipped by a user.
          [color=blue]
          > I mean to say if iam calling onUnload=javasc ript:check();[/color]

          <body ... onunload="check ()">

          [snip]

          Mike


          [1] Granted, IE allows cancellation using onbeforeunload, but not everyone
          uses IE.

          --
          Michael Winter
          Replace ".invalid" with ".uk" to reply by e-mail.

            Comment

            • Martin Honnen
              #4
              Re: confirm msg on onUnload?



              Martin Honnen wrote:
              [color=blue]
              >
              >
              > Nithya Venkatachalam wrote:
              >[color=green]
              >> Is there anyway to display a confirm msg onUnload of a page?
              >>
              >> I mean to say if iam calling onUnload=javasc ript:check();
              >>
              >> and in check(){
              >>
              >> if(confirm("che ck?"))
              >> {
              >> unload the page;
              >> }
              >> else
              >> {
              >> Dont unload , just come back to the previous state( i have some
              >> values in text fields to be retained)
              >> }
              >> }
              >>
              >> I want to call this function on Unload.[/color]
              >
              >
              > You should set
              > event.returnVal ue = 'Check?'
              > e.g.
              > <body onunload="event .returnValue = 'Check?';">[/color]

              That should be
              <body onbeforeunload= "event.returnVa lue = 'Check?';">


              --

              Martin Honnen
              Attention Required! | Cloudflare
              http://JavaScript.FAQTs.com/

                Comment

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