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Re: Is it necessary to explicitly destroy elements?

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Stefan Ram wrote:

> "Leonardo Azpurua" <leonardo@exmvps.org> writes:
>>My question (which is browser dependent, but there's no better place to
>>ask browser related questions than here) is: do most "modern" browsers
>>(say FireFox, Chrome, IE9+, Opera, Safari) automatically handle all the
>>cleanup of a disposed element (detaching event handlers, freeing graphical
>>resources, deallocating memory, etc) for all the elemets inside a disposed
>>control, or is it necessary to provide a function to handle all of it
>>explicitly?
> 
>   The garbage collectors should take care of JavaScript objects and of
>   DOM objects. But some collectors cannot clean up in all situations.
>   To be on the safe side:
> 
> - avoid circular references between JavaScript objects and DOM objects
> - avoid using closure variables in event handlers
> - avoid using inline event handlers (onclick='f()')
> - avoid using expando properties
> - nullify expando properties and DOM references when not needed anymore

The IE memory leak issue has been resolved as of IE 9, so given the target 
environments none of this is necessary anymore.  Therefore, the programming 
language to which these measures applied, was JScript, not JavaScript, and 
only the MSHTML DOM, not all DOMs.

-- 
PointedEars
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Is it necessary to explicitly destroy elements? "Leonardo Azpurua" <leonardo@exmvps.org> - 2015-05-16 11:14 -0430
  Re: Is it necessary to explicitly destroy elements? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-16 17:44 +0200
    Re: Is it necessary to explicitly destroy elements? "Leonardo Azpurua" <leonardo@exmvps.org> - 2015-05-16 11:32 -0430
      Re: Is it necessary to explicitly destroy elements? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-16 18:06 +0200
  Re: Is it necessary to explicitly destroy elements? "Leonardo Azpurua" <leonardo@exmvps.org> - 2015-05-16 11:42 -0430
    Re: Is it necessary to explicitly destroy elements? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-16 18:12 +0200
  Re: Is it necessary to explicitly destroy elements? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-16 18:09 +0200
    Re: Is it necessary to explicitly destroy elements? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-16 22:05 -0300
      Re: Is it necessary to explicitly destroy elements? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-17 08:01 +0200
        Re: Is it necessary to explicitly destroy elements? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-17 13:29 -0300
          Re: Is it necessary to explicitly destroy elements? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-17 19:06 +0200
      Re: Is it necessary to explicitly destroy elements? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-05-17 11:53 +0200
        Re: Is it necessary to explicitly destroy elements? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2015-05-17 13:20 -0300

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