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Groups > comp.lang.javascript > #38085
| From | Soviet_Mario <SovietMario@CCCP.MIR> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: Logical conundrums if () else if() |
| Date | 2020-01-18 21:06 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <qvvogi$af3$1@dont-email.me> (permalink) |
| References | <cd84bfc2-63ac-4a4f-bd76-9b144035b9ba@googlegroups.com> |
On 28/12/19 09:40, Jonas Thörnvall wrote:
> How can two if statements that work perfectly standalone as single statments.
> Make outcome that differs when you put in, an else if statement to only execute one of them. The below statements have the statement with heavier conditioning first so not the second statement gets executed. Because both satisfy the noneboolean condition.
>
> I probably done some very no no thingy.
>
>
>
> if (EDITEND<SELEND && document.getElementById("lockedit").checked){
> SELLENGTH=SELEND-SELSTART;
> document.getElementById("SB").value=EDITSTART+SELLENGTH;
> document.getElementById("EB").value=SELEND;
> } else if (EDITEND<SELEND){ document.getElementById("EB").value=SELEND;}
>
do you have the rock solid warranty that none of the
statements/function calls MODIFIES the internal status of
the objects probed ?
If somewhere sth gets changed by the inquiry, the order
could become relevant.
a trivial example of what I mean
int q, k = 0;
if (k == 0) q = 0; else if (++ k != 0) q = 1;
if (++ k != 0) q = 0; else if (k == 0) q = 1;
the state of q depends on the order the two tests on k are
executed.
maybe getElementById alters sth ... dunno ...
--
1) Resistere, resistere, resistere.
2) Se tutti pagano le tasse, le tasse le pagano tutti
Soviet_Mario - (aka Gatto_Vizzato)
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Logical conundrums if () else if() Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-12-28 00:40 -0800
Re: Logical conundrums if () else if() "R.Wieser" <address@not.available> - 2019-12-28 12:21 +0100
Re: Logical conundrums if () else if() Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-12-28 05:32 -0800
Re: Logical conundrums if () else if() "R.Wieser" <address@not.available> - 2019-12-28 19:10 +0100
Re: Logical conundrums if () else if() Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-12-28 12:16 -0800
Re: Logical conundrums if () else if() "R.Wieser" <address@not.available> - 2019-12-29 08:52 +0100
Re: Logical conundrums if () else if() Arno Welzel <usenet@arnowelzel.de> - 2019-12-30 21:35 +0100
Re: Logical conundrums if () else if() Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-12-30 12:42 -0800
Re: Logical conundrums if () else if() "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2019-12-28 09:37 -0800
Re: Logical conundrums if () else if() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2019-12-29 11:43 +0100
Re: Logical conundrums if () else if() "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2019-12-29 08:14 -0800
Re: Logical conundrums if () else if() Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-18 21:06 +0100
Re: Logical conundrums if () else if() Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-19 01:22 +0100
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