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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: Object prop missing?
Date: Thu, 13 Jun 2019 13:09:35 +0200
Organization: PointedEars Software (PES)
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Message-ID: <2720861.OsphAzSTzx@PointedEars.de>
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Xref: csiph.com comp.lang.javascript:36897

Andrew Poulos wrote:

> On 13/06/2019 8:33 pm, Evertjan. wrote:
>> Andrew Poulos <ap_prog@hotmail.com> wrote on 13 Jun 2019 in
>> comp.lang.javascript:
>>> On 13/06/2019 5:36 pm, Thomas 'PointedEars' Lahn wrote:
>>>> Andrew Poulos wrote:
>>> var options = [
>>>                  {},
>>>                  {"id": "opt1", "on": false },
>>>                  {"id": "opt2", "on": false },
>>>                  {"id": "opt3", "on": false },
>>>                  {"id": "opt4", "on": false },
>>>                  {"id": "opt5", "on": false }
>>>                 ];
>>>
>>> for (var i = 6; i > 0; i--) {
>>>     // add stuff to options elements
>>>     options[i].h = 28;
>>> }
>>>
>>> […]
>> 
>> You did not test this, because option[6] does not exist and gives an
>> error.
> 
> Yes, you're right the 6 should've been a 5.

Then the same code will not access options[0].

> The code I have is quite long and it gives no value for h even though
> immediately before trying to get the value console.log says it does have
> a value.

If you debug it or try to reduce it to a minimal test case, you will see the 
error.  Also, ESLint might help.

-- 
PointedEars
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