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Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API?

Newsgroups comp.lang.javascript
Date 2018-05-21 23:50 -0700
References (10 earlier) <d061aa60-fd9f-4be0-aef2-14d0ce0b240b@googlegroups.com> <4787eb57-159d-4e41-9fb9-0b7ce59e60ad@googlegroups.com> <XnsA8E9F11CCEB35eejj99@194.109.6.166> <fa0fe321-5135-40eb-a487-0ac33dd7e0d5@googlegroups.com> <6fda3323-0b5f-4086-b720-f8e4da1a03de@googlegroups.com>
Message-ID <176ec780-459b-4a46-907f-989b20ce783e@googlegroups.com> (permalink)
Subject Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API?
From Jonas Thörnvall <jonas.thornvall@gmail.com>

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Den tisdag 22 maj 2018 kl. 08:09:37 UTC+2 skrev Jonas Thörnvall:
> Den tisdag 22 maj 2018 kl. 07:02:29 UTC+2 skrev Jonas Thörnvall:
> > Den måndag 21 maj 2018 kl. 23:42:17 UTC+2 skrev Evertjan.:
> > > =?UTF-8?Q?Jonas_Th=C3=B6rnvall?= <jonas.thornvall@gmail.com> wrote on 21
> > > May 2018 in comp.lang.javascript: 
> > > 
> > > > As you may have seen windows 10 gives *error message when* i try to send
> > > > messages to mid output. Because apparently the mid object is not
> > > > reachable global, and i do not know howto tackle it. 
> > > 
> > > If you declare a variable name in the global scope,
> > > with
> > > 
> > > let mid;
> > > 
> > > or 
> > > 
> > > var mid;
> > > 
> > > you can later assign your [non global yet] object to it:
> > > 
> > > mid =  midi;
> > > 
> > > ===============================
> > > 
> > > This all very basic stuff, meseems,
> > > and easily debuggable, 
> > > perhaps by temporarily assigning it to a fake object.
> > > 
> > > Split up code into debuggable modules.
> > > 
> > > Please start thinking modular and debuggy,
> > > do not ask us to review code that you do not understand yourself.
> > > 
> > > 
> > > -- 
> > > Evertjan.
> > > The Netherlands.
> > > (Please change the x'es to dots in my emailaddress)
> > 
> > But the code do work in windows XP, Janevert i can not see why it do not in Windows 10. That the on midi success object "midi" object is a bit elusive is more about its documentation very scarse. The problem with it seem rather general just as you say, so my question is why does it not work. 
> > 
> > Now i declared var midi,var mid,var outputs as global *outside any function*** in mainmidi.js but the error message persist.
> > 
> > UI.js:77 Uncaught TypeError: Cannot read property 'outputs' of undefined
> >     at sendProgram (UI.js:77)
> >     at setTrack (UI.js:43)
> >     at init (mainmidi.js:58)
> 
> Sorry about Janevert, Evertjan it is just the syndrom of when something eventually stick, it is stuck whether it is right or wrong.

Well the error is in sendProgram 
output = mid.outputs.get(outportindex);
This get undefined output, but not in XP.

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Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 01:49 -0700
  Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 02:15 -0700
    Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 02:24 -0700
      Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 02:28 -0700
        Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 02:30 -0700
  Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-21 12:13 +0200
    Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 03:47 -0700
    Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 03:48 -0700
    Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 04:02 -0700
    Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 04:24 -0700
      Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 04:46 -0700
        Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 05:11 -0700
          Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 05:21 -0700
            Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 05:21 -0700
              Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 05:27 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 05:30 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 05:48 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 08:13 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? John G Harris <niam@jghnorth.org.uk.invalid> - 2018-05-21 18:27 +0100
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 12:42 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 12:53 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 12:58 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 13:07 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-21 23:42 +0200
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 21:53 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-22 10:11 +0200
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 22:02 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 23:09 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 23:50 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-21 23:57 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-22 00:03 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-22 00:28 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-22 00:43 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-22 00:57 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-22 01:05 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-22 10:28 +0200
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-22 02:01 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-22 02:14 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-22 02:20 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-23 00:08 -0700
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-22 10:15 +0200
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-22 10:14 +0200
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-22 10:13 +0200
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-22 10:13 +0200
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-22 10:12 +0200
                Re: Script work with windows XP, "opera,chrome" but not in Windows 10 something changed in the midi API? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-22 10:11 +0200

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