Forced to browser-sniff Safari version

From	Richard Maher <maher_rjSPAMLESS@hotmail.com>
Newsgroups	comp.lang.javascript
Subject	Forced to browser-sniff Safari version
Date	2015-04-01 16:49 +0800
Organization	Aioe.org NNTP Server
Message-ID	<mfgbeg$otv$1@speranza.aioe.org> (permalink)

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Can someone tell me the "best" way to detect Safari and then its version 
number?

Look, I don't want to do it but I can't find a way to pin down a WORKING 
version of speechSynthesis on Safari :-(

See below for an example that works on iOS 7.1.2 *IF* you don't add the 
onEnd listener. Apart from that everything is peachy.

In my real world full blown example it talks but still won't deliver the 
at end event.

On iOS 8 there is no issue. (I'm assuming here Safari versions are tied 
to the OS?)

Please offer a best-of-breed agent sniffer or a better 
working-feature-detector.

<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function fini()
{
     alert("end");
}
function talk()
{
     if (!('speechSynthesis' in window)) {
         alert("Unsupported browser");
         return;
     }

     alert("Getting ready.");
     var utterance = "Hello World";
     var chat = new SpeechSynthesisUtterance(utterance);

     chat.addEventListener('end', fini, false);

     speechSynthesis.speak(chat);

}
</script>
</head>
<body>

<p>On Safari this example won't fire any known events<br />
onend, onerror, even onended: -</p>

<input type="button" value="Talk" onclick="talk()" />
<br /><br />
No probs on Chrome or Opera. Spewin!
</body>
</html>

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Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-01 16:49 +0800
  Re: Forced to browser-sniff Safari version JJ <jj4public@vfemail.net> - 2015-04-01 19:19 +0700
    Re: Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-01 20:35 +0800
      Re: Forced to browser-sniff Safari version Denis McMahon <denismfmcmahon@gmail.com> - 2015-04-01 14:50 +0000
        Re: Forced to browser-sniff Safari version Scott Sauyet <scott.sauyet@gmail.com> - 2015-04-01 09:35 -0700
          Re: Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-02 06:29 +0800
        Re: Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-02 06:28 +0800
          Re: Forced to browser-sniff Safari version "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-04-02 01:04 +0200
      Re: Forced to browser-sniff Safari version Andrew Poulos <ap_prog@hotmail.com> - 2015-04-02 10:53 +1100
        Re: Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-02 09:18 +0800
          Re: Forced to browser-sniff Safari version Andrew Poulos <ap_prog@hotmail.com> - 2015-04-02 15:12 +1100
        Re: Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-02 10:25 +0800
          Re: Forced to browser-sniff Safari version Andrew Poulos <ap_prog@hotmail.com> - 2015-04-02 18:44 +1100
  Re: Forced to browser-sniff Safari version "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2015-04-01 17:59 -0700
    Re: Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-02 10:20 +0800
      Re: Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-02 20:27 +0800
        Re: Forced to browser-sniff Safari version Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-02 21:06 +0800
          Opera mobile has laryngitis Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-02 21:55 +0800
            Re: Opera mobile has laryngitis "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2015-04-02 16:28 -0700
              Re: Opera mobile has laryngitis Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-03 07:38 +0800
                Re: Opera mobile has laryngitis Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-03 07:56 +0800
                Re: Opera mobile has laryngitis Swifty <steve.j.swift@gmail.com> - 2015-04-04 07:47 +0100
                Re: Opera mobile has laryngitis Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-05 08:12 +0800
                Re: Opera mobile has laryngitis Ed Jay <edMbj@aes-intl.com> - 2015-04-05 08:59 -0700
                Re: Opera mobile has laryngitis Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-06 06:56 +0800
                Re: Opera mobile has laryngitis Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-03 10:02 +0800
              Re: Opera mobile has laryngitis Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-03 08:14 +0800
            Re: Opera mobile has laryngitis Wally W. <ww84wa@aim.com> - 2015-04-04 12:49 -0400
              Re: Opera mobile has laryngitis Richard Maher <maher_rjSPAMLESS@hotmail.com> - 2015-04-05 08:18 +0800

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