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Re: [webcomponents] Template element parser changes => Proposal for adding DocumentFragment.innerHTML

From: Rafael Weinstein <rafaelw@google.com>
Date: Thu, 10 May 2012 17:28:17 -0700
Message-ID: <CABMdHiTQc5UDVFEbGsTO5h7zvw1CSqe9uejyX5WFwYac20BvJQ@mail.gmail.com>
To: Ian Hickson <ian@hixie.ch>
Cc: "Tab Atkins Jr." <jackalmage@gmail.com>, Webapps WG <public-webapps@w3.org>
On Thu, May 10, 2012 at 5:03 PM, Ian Hickson <ian@hixie.ch> wrote:
> On Fri, 11 May 2012, Tab Atkins Jr. wrote:
>>
>> For something like this:
>>
>> $("<p>Example "+exnum+":</p><p><img src="+exsrc+">").appendTo(container);
>
> Can we really not come up with anything better? It makes me really sad to
> think that the best we can do here is to go from a nice structured
> environment, concatenate our data together into a string, and then reparse
> the string back into structured data to add it to the DOM.
>
> I understand that people do this kind of thing all the time, but I've
> always at least assumed that everyone agreed that it was a necessarily
> evil because the alternatives were even worse. I had hope when we were
> discussing Element.create() that maybe we were finally coming up with a
> workable alternative, but as far as I can tell that never went anywhere
> and now we're actually talking about adding APIs to _support_ string-based
> DOM tree generation as if it's an actually sane way of writing code.
>
> Am I really the only one here who thinks this is horrifying?

I find it horrifying, and I'll venture that Yehuda and the author of
every other templating mechanism does as well -- at least in the sense
that all of our goal is to generally remove the *need* for page
authors to have to use innerHTML, by declaring how their views should
be composed, rather than doing it imperatively.

Libraries exist at a higher leverage point and if *they* do the right
thing, then a greater number of authors are protected. Adding this,
makes it easier for libraries (and if I get my way, the platform
itself) to do this right so that authors can stop constructing DOM
imperatively altogether.

>
> --
> Ian Hickson               U+1047E                )\._.,--....,'``.    fL
> http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
> Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Friday, 11 May 2012 00:28:47 GMT

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