[DUG] FW: Web development

[Jolyon Smith]

My problem isn't "invalid" HTML - it is "perfectly valid HTML but which
doesn't render the way you expect in browser X, Y Z or perm any N from M".

Ditto Javascript which is perfectly valid but which doesn't work the way you
expect in browser X, Y, Z or perm any N from M.

Or CSS which is perfectly valid but which doesn't work the way you expect in
browser X, Y, Z or perm any N from M.

Or some combination of HTML, JavaScript or CSS which doesn't work in that
particular combo in browser X, Y, Z or perm any N from M.


I had thought that these issues might have been resolved at some point in
the last 20 years, but sadly things really aren't much better today than
they were then.  In some cases worse, because the tools techniques also
assume that things have improved, when they haven't... lulling you into a
false sense of security.


-----Original Message-----
From: delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz] On
Behalf Of Berend de Boer
Sent: Tuesday, 7 June 2011 09:23
To: NZ Borland Developers Group - Delphi List
Subject: Re: [DUG] FW: Web development

>>>>> "Jolyon" == Jolyon Smith <jsmith at deltics.co.nz> writes:

    Jolyon> The question is, what tool do you use to create the code
    Jolyon> that ends up emitting it, if you don't emit it directly
    Jolyon> yourself ?

There are many techniques but a simple one is using something like
TXMLWriter, see here http://www.berenddeboer.net/delphi


    Jolyon> The problem I (personally) have with HTML is that it has
    Jolyon> been co-opted into a role for which it was never
    Jolyon> originally designed.  It is a document markup language
    Jolyon> that has been strong armed into a role as a UI
    Jolyon> presentation technology.

In many cases it is far more helpful to really see this as emitting
document markup, with css for styling and javascript for progressive
enhancement.

Don't bring your Delphi habits over, you need to look at HTML
technology very differently.



    >> But on the specifics of checking your HTML: check the W3C
    >> validator service.

    Jolyon> Again, this is "after the fact" debugging.

    Jolyon> I don't have to submit my Pascal code to the P3C validator
    Jolyon> service to check it's validity.

If you order your win32 calls wrong, what happens then? Where is your
win32 call validator?

But see above, using a tool like TXMLWriter you can make sure you
invalid HTML is detected immediately, although at run-time.

-- 
All the best,

Berend de Boer


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