in reply to How can I tell a browser to refresh from perl?

Here a JS solution: 
 
setTimeout(
    function () { 
          window.location.reload(true)
                },
    60000);

[download]

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Je suis Charlie!

Replies are listed 'Best First'.
Re^2: How can I tell a browser to refresh from perl?
by Anonymous Monk on Feb 11, 2017 at 10:05 UTC
    As the third sentence of my original post says, I know that I can have the browser periodically refresh. This is not what I'm looking for. The browser will refresh every N seconds (N=60 in your case, meaning a long wait from when the file updates to when we see it) with a flicker, but the file updates only every few minutes. I don't want the browser to poll, I want to tell the browser when it's time.
[reply]
      > As the third sentence of my original post says,

      And as another sentence said

      >  Is there a better way to do it? 

      JS doesn't spawn a process and doesn't depend on AppleScript or OS or browser at all.

      You can also use JS in a hidden iframe checking in short frequency if something changed, before conditionally reloading the parent frame. (Hence no "flickering")

      But that's becoming OT here, Google is your friend.

      I know newer technologies like WebSockets allow to push content, but IIRC this will need a server keeping the connection alive.

      See http://en.wikipedia.org/wiki/Push_technology for various options

      Cheers Rolf
      (addicted to the Perl Programming Language and ☆☆☆☆ :)
      Je suis Charlie!

[reply]
        No flicker for me.

        page.html 

        <iframe src="loader.html"
        style='display:none'
        >

</iframe>

<h1>parent</h1>


<script>

  var version=9;
  document.writeln("Version "+version+" loaded at "+ Date());

</script>

        [download]
        loader.html 
        <h3>loader</h3>

<script>
setTimeout(
    function () {
        window.location.reload(true)
    }, 1000);


var date=Date();
var version=9;
document.writeln(date);

if (parent.version<version){
    parent.location.reload(true);
}

</script>

        [download]

        Though in the next step,I would try to get rid of the version number in the source and try to put the load state into the #searchstring

        YMMV

        Cheers Rolf
        (addicted to the Perl Programming Language and ☆☆☆☆ :)
        Je suis Charlie!

        update

        Works with FF and IE.

        For local files not with Chrome, because of same origin policy with file:// protocol

        Possible Workarounds:

      • change security settings

        Is also creating flicker in Chrome tab bar

        Possible Workarounds:

      • use AJAX XML-HTTP-request request instead of iframe

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