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Re: Inserting stuff received with AJAX into the DOM

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On 21/08/2017 17:47, Thomas 'PointedEars' Lahn wrote:
> Cezary Tomczyk wrote:
> 
>> On 21/08/2017 16:44, Thomas 'PointedEars' Lahn wrote:
>>> Cezary Tomczyk wrote:
>>>> I am sure that:
>>>>
>>>> const par = document.createElement( 'p' );
>>>>
>>>> will always create HTML element. I can't see any real scenario where
>>>> createElement method will return "something else than a reference to an
>>>> object that has a method named “appendChild”" in that particular
>>>> scenario.
>>>
>>> Why?
>>
>> https://developer.mozilla.org/en-US/docs/Web/API/Document/createElement
>> […]
> 
> Certainly you can come up with something better than hearsay.

Possibly there is a better explanation than just hearsay.

>> In that particular case:
>>
>> const par = document.createElement( 'p' );
>>
>> this will return an HTML p element.
> 
> It may.

Well, recently you wrote:

"As a rule of thumb, if the object in question always had the method and 
it always worked, I do not feature-test it."

Isn't now that case?

I might be wrong, but if there are cases that may strongly require "if" 
here then I'd like to know.

>> As for "something else than a reference to an object that has a method
>> named “appendChild”" may occur, of course, but this is a very rare case
> 
> When in doubt, be careful.

:-)

>> I would say and even, if it'll occur then calling "appendChild" later
>> will throw a DOM exception which I think it's good because it helps to
>> catch the error on an early stage.
> 
> An exception, but not a “DOM exception” will be thrown, if the object does
> not have the method.  Or execution will simply stop with an error.  Who
> knows.  createElement() is a host object’s method.

Right, an exception.

createElement() is a host object’s method, but it was always available 
and unless it's not modified it has been always working quite good.

-- 
Cezary Tomczyk
http://www.ctomczyk.pl/

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Inserting stuff received with AJAX into the DOM bit-naughty@hotmail.com - 2017-08-19 12:35 -0700
  Re: Inserting stuff received with AJAX into the DOM bit-naughty@hotmail.com - 2017-08-19 12:55 -0700
    Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-20 12:16 +0200
      Re: Inserting stuff received with AJAX into the DOM Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2017-08-20 15:55 +0200
        Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-20 19:18 +0200
          Re: Inserting stuff received with AJAX into the DOM Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2017-08-20 21:50 +0200
            Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-20 22:39 +0200
              Re: Inserting stuff received with AJAX into the DOM Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2017-08-21 08:29 +0200
                Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-21 16:44 +0200
                Re: Inserting stuff received with AJAX into the DOM Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2017-08-21 17:24 +0200
                Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-21 17:47 +0200
                Re: Inserting stuff received with AJAX into the DOM Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2017-08-21 19:50 +0200
                Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-21 22:16 +0200
                Re: Inserting stuff received with AJAX into the DOM Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2017-08-26 09:25 +0200
                Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-27 03:02 +0200
  Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-20 12:30 +0200
  Re: Inserting stuff received with AJAX into the DOM bit-naughty@hotmail.com - 2017-08-20 07:37 -0700
    Re: Inserting stuff received with AJAX into the DOM "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-08-20 17:17 +0200
    Re: Inserting stuff received with AJAX into the DOM Tim Streater <timstreater@greenbee.net> - 2017-08-20 17:48 +0100
  Re: Inserting stuff received with AJAX into the DOM bit-naughty@hotmail.com - 2017-08-20 11:21 -0700
    Re: Inserting stuff received with AJAX into the DOM Tim Streater <timstreater@greenbee.net> - 2017-08-20 19:29 +0100
    Re: Inserting stuff received with AJAX into the DOM "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-08-21 01:29 +0200
      Re: Inserting stuff received with AJAX into the DOM Andrew Poulos <ap_prog@hotmail.com> - 2017-08-21 16:29 +1000
        Re: Inserting stuff received with AJAX into the DOM "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-08-21 12:25 +0200
        Re: Inserting stuff received with AJAX into the DOM Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-08-21 16:47 +0200

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