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Re: Preventing "Prevent this page from creating additional dialogs"

Newsgroups comp.lang.javascript
Subject Re: Preventing "Prevent this page from creating additional dialogs"
From "Evertjan." <exjxw.hannivoort@interxnl.net>
References (5 earlier) <dr6qn7pl2u3c3e7kiv0m3g9f0rqka087ql@4ax.com> <XnsA02C67D818E24eejj99@194.109.133.133> <75frn792kreqn0t372imt8u8pj3i60i5rl@4ax.com> <XnsA02D64BA8AFeejj99@194.109.133.133> <pqlsn7p6g2mu48sho8255uc7mjjri4kri5@4ax.com>
Message-ID <XnsA02D5F5042843eejj99@194.109.133.133> (permalink)
Date 2012-04-06 07:22 +0000

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Gene Wirchenko wrote on 06 apr 2012 in comp.lang.javascript:

>>But it does, it defaults to not false, try it out.
> 
>      I did with
>           alert(alert("Hi"));
> I got an alert with "Hi" then one with "undefined".  This was on IE 9.
> All of my examples in this post were done under IE 9.

Never touch the stuff.

>>There are no internal or defined functions without an implicit return 
>>value in javascript.
>>
>>Think it over, why should this crash?
>>
>>if (alert(1)) ...
> 
>      It did not crash for me.  I gave it an else clause, and that
> clause was executed.

So it was interpreted as not being false, so true.

If no return was given, the code woud crash/halt.


-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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Thread

Preventing "Prevent this page from creating additional dialogs" "Larry.Martell@gmail.com" <larry.martell@gmail.com> - 2012-03-23 17:12 -0700
  Re: Preventing "Prevent this page from creating additional dialogs" Scott Johnson <noonehome@chalupasworld.com> - 2012-03-24 06:55 -0700
    Re: Preventing "Prevent this page from creating additional dialogs" "Larry.Martell@gmail.com" <larry.martell@gmail.com> - 2012-03-24 07:58 -0700
      Re: Preventing "Prevent this page from creating additional dialogs" Denis McMahon <denismfmcmahon@gmail.com> - 2012-03-24 18:41 +0000
      Re: Preventing "Prevent this page from creating additional dialogs" Scott Johnson <noonehome@chalupasworld.com> - 2012-03-24 20:59 -0700
      Re: Preventing "Prevent this page from creating additional dialogs" "Larry.Martell@gmail.com" <larry.martell@gmail.com> - 2012-03-25 12:26 -0700
        Re: Preventing "Prevent this page from creating additional dialogs" Scott Johnson <noonehome@chalupasworld.com> - 2012-03-25 16:55 -0700
  Re: Preventing "Prevent this page from creating additional dialogs" "Tom de Neef" <tdeneef@qolor.nl> - 2012-03-24 17:06 +0100
  Re: Preventing "Prevent this page from creating additional dialogs" Rick Viscomi <rviscomi@gmail.com> - 2012-03-24 11:24 -0700
    Re: Preventing "Prevent this page from creating additional dialogs" Scott Johnson <noonehome@chalupasworld.com> - 2012-03-24 21:01 -0700
    Re: Preventing "Prevent this page from creating additional dialogs" David Mark <dmark.cinsoft@gmail.com> - 2012-03-28 20:16 -0700
      Re: Preventing "Prevent this page from creating additional dialogs" Matt McDonald <matt@fortybelow.ca> - 2012-04-03 08:35 -0600
    Re: Preventing "Prevent this page from creating additional dialogs" theAbacus@yahoo.com - 2012-04-02 16:16 -0700
      Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-02 21:11 -0700
        Re: Preventing "Prevent this page from creating additional dialogs" "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-04-03 07:01 +0000
          Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-03 08:28 -0700
        Re: Preventing "Prevent this page from creating additional dialogs" Jeff North <jnorthau@yahoo.com.au> - 2012-04-03 17:20 +1000
        Re: Preventing "Prevent this page from creating additional dialogs" David Mark <dmark.cinsoft@gmail.com> - 2012-04-03 00:28 -0700
          Re: Preventing "Prevent this page from creating additional dialogs" "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-04-03 11:24 +0000
            Re: Preventing "Prevent this page from creating additional dialogs" Dr J R Stockton <reply1214@merlyn.demon.co.uk.not.invalid> - 2012-04-04 21:13 +0100
              Re: Preventing "Prevent this page from creating additional dialogs" Jeff North <jnorthau@yahoo.com.au> - 2012-04-05 14:12 +1000
                Re: Preventing "Prevent this page from creating additional dialogs" "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-04-05 08:12 +0000
                Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-05 08:51 -0700
                Re: Preventing "Prevent this page from creating additional dialogs" "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-04-05 22:37 +0000
                Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-05 19:51 -0700
                Re: Preventing "Prevent this page from creating additional dialogs" "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-04-06 07:22 +0000
                Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-06 09:14 -0700
                Re: Preventing "Prevent this page from creating additional dialogs" "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-04-06 19:54 +0000
                Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-06 13:09 -0700
                Re: Preventing "Prevent this page from creating additional dialogs" "Evertjan." <exjxw.hannivoort@interxnl.net> - 2012-04-06 20:23 +0000
                Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-06 19:48 -0700
                Re: Preventing "Prevent this page from creating additional dialogs" Dr J R Stockton <reply1214@merlyn.demon.co.uk.not.invalid> - 2012-04-07 19:14 +0100
                Re: Preventing "Prevent this page from creating additional dialogs" Dr J R Stockton <reply1214@merlyn.demon.co.uk.not.invalid> - 2012-04-07 19:04 +0100
                Re: Preventing "Prevent this page from creating additional dialogs" Dr J R Stockton <reply1214@merlyn.demon.co.uk.not.invalid> - 2012-04-06 21:20 +0100
                Re: Preventing "Prevent this page from creating additional dialogs" Eric Bednarz <bednarz@fahr-zur-hoelle.org> - 2012-04-07 02:49 +0200
                Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-06 19:49 -0700
                Re: Preventing "Prevent this page from creating additional dialogs" Mike Duffy <Use_guestbook_page@website.in.sig> - 2012-04-07 03:02 +0000
                Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-06 20:38 -0700
                Re: Preventing "Prevent this page from creating additional dialogs" Mike Duffy <Use_guestbook_page@website.in.sig> - 2012-04-07 04:09 +0000
                Re: Preventing "Prevent this page from creating additional dialogs" Dr J R Stockton <reply1214@merlyn.demon.co.uk.not.invalid> - 2012-04-08 19:34 +0100
                Re: Preventing "Prevent this page from creating additional dialogs" Mike Duffy <Use_guestbook_page@website.in.sig> - 2012-04-09 14:56 +0000
                Re: Preventing "Prevent this page from creating additional dialogs" John G Harris <john@nospam.demon.co.uk> - 2012-04-07 11:38 +0100
          Re: Preventing "Prevent this page from creating additional dialogs" Gene Wirchenko <genew@ocis.net> - 2012-04-03 08:37 -0700
      Re: Preventing "Prevent this page from creating additional dialogs" Jeff North <jnorthau@yahoo.com.au> - 2012-04-03 22:06 +1000

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