Send variable to setTimeout

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  • Robert Mark Bram
    #1

    Send variable to setTimeout

    Howdy All!

    How can I make something like this work?

    var message = "This will appear in 10 seconds";

    setTimeout ('alert(message )', 10000);

    Thanks for any advice!

    Rob
    :)
    :>
    :]
    Tags: None
    • McKirahan
      #2
      Re: Send variable to setTimeout

      "Robert Mark Bram" <relaxedrob@rem ove.this.optusn et.com.au> wrote in message
      news:opr00xp9e0 yneqvgrmb@news. optusnet.com.au ...[color=blue]
      > Howdy All!
      >
      > How can I make something like this work?
      >
      > var message = "This will appear in 10 seconds";
      >
      > setTimeout ('alert(message )', 10000);
      >
      > Thanks for any advice!
      >
      > Rob
      > :)
      > :>
      > :][/color]

      You've got it; however, the message should reflect that it appeared "after"
      ten seconds not "in" ten seconds. Try the following as-is; watch for
      word-wrap.


      <html>
      <head>
      <title>timeout. htm</title>
      <script language="javas cript" type="text/javascript">
      <!--
      var message = "This will appear after 10 seconds";
      setTimeout ('alert(message )', 10000);
      // -->
      </script>
      </head>
      <body>
      </body>
      </html>


        Comment

        • McKirahan
          #3
          Re: Send variable to setTimeout

          Better yet:

          var message = "This page loaded 10 seconds ago.";


            Comment

            • Janwillem Borleffs
              #4
              Re: Send variable to setTimeout

              Robert Mark Bram wrote:[color=blue]
              > How can I make something like this work?
              >
              > var message = "This will appear in 10 seconds";
              >
              > setTimeout ('alert(message )', 10000);
              >[/color]

              If you want to use this in a function, consider the following:

              function alertmsg(messag e) {
              alert(message);
              // Escape single quotes in message
              message = message.replace (/'/g,"\\'");
              setTimeout ("alertmsg(' " + message + "')", 10000);
              }

              Otherwise, follow McKirahan's advise...


              JW



                Comment

                • Lasse Reichstein Nielsen
                  #5
                  Re: Send variable to setTimeout

                  "Janwillem Borleffs" <jw@jwscripts.c om> writes:
                  [color=blue]
                  > Robert Mark Bram wrote:[color=green]
                  >> How can I make something like this work?
                  >>
                  >> var message = "This will appear in 10 seconds";
                  >>
                  >> setTimeout ('alert(message )', 10000);[/color][/color]
                  [color=blue]
                  > If you want to use this in a function, consider the following:
                  >
                  > function alertmsg(messag e) {
                  > alert(message);
                  > // Escape single quotes in message
                  > message = message.replace (/'/g,"\\'");
                  > setTimeout ("alertmsg(' " + message + "')", 10000);
                  > }[/color]

                  That fails in several ways for
                  alertmsg("I'm happy because my backslash (\\) is slanted!\nYes I am");
                  You handle the ', but the "\" is interpreted as an escape and is lost
                  (because '\)' becomes ')', and the newline is also used literally,
                  giving a syntax error, since newlines are not allowed inside string
                  literals..
                  [color=blue]
                  > Otherwise, follow McKirahan's advise...[/color]

                  That will work, but requires a global variable.

                  There is one other way, that sadly only works in IE from version 5.5:
                  using a function as argument to setTimeout:
                  ---
                  function alertmsg(messag e) {
                  alert(message);
                  // Escape single quotes in message
                  setTimeout (function(){ale rtmsg(message); }, 10000);
                  }
                  ---
                  This constant recalling, which was not in the original posters code,
                  is better handled with setInterval anyway:
                  ---
                  function startalerts(mes sage) {
                  return setInterval(fun ction(){alert(m essage);},10000 );
                  }
                  ---

                  The equivalent for the original poster's problem is:

                  var message = "whatever";
                  setTimeout(func tion(){alert(me ssage);},10000) ;


                  /L
                  --
                  Lasse Reichstein Nielsen - lrn@hotpop.com
                  DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
                  'Faith without judgement merely degrades the spirit divine.'

                    Comment

                    • Janwillem Borleffs
                      #6
                      Re: Send variable to setTimeout

                      Lasse Reichstein Nielsen wrote:[color=blue]
                      > That fails in several ways for
                      > alertmsg("I'm happy because my backslash (\\) is slanted!\nYes I
                      > am"); You handle the ', but the "\" is interpreted as an escape and
                      > is lost (because '\)' becomes ')', and the newline is also used
                      > literally, giving a syntax error, since newlines are not allowed
                      > inside string literals..
                      >[/color]

                      Well, that's easy enough to fix:

                      function alertmsg(messag e) {
                      message = unescape(messag e);
                      alert(message);
                      setTimeout ("alertmsg(' " + escape(message) + "')", 10000);
                      }


                      JW



                        Comment

                        • Thomas 'PointedEars' Lahn
                          #7
                          Re: Send variable to setTimeout

                          Lasse Reichstein Nielsen wrote:
                          [color=blue]
                          > There is one other way, that sadly only works in IE from version 5.5:
                          > using a function as argument to setTimeout:[/color]

                          Mozilla/4.0+ supports that as well, it even supports passing non-string
                          arguments to the called function, passing them as third, fourth aso.
                          argument of window.setTimeo ut(...).

                          http://devedge.netscape.com/library/manuals/2000/javascript/1.3/reference/window.html#1203758



                          PointedEars

                            Comment

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