[Haskell-cafe] [Haskell] ANNOUNCE: haste-perch

[Alberto G. Corona]

The syntax is similar to blaze-html, but haste-perch  uses the HTM-DOM in
the browser to create DOM elements. blaze-html creates a html bytestring in
the server that the browser must load.

It uses Haste.DOM

http://hackage.haskell.org/package/haste-compiler-0.2.99/docs/Haste-DOM.html

Haste.DOM has primitives that invoke Javascript functions in browser like:
For example newElem invoke  "createElement" in javascript

Perch assemble a sequence of DOM calls that create the HTML tree directly
in the browser. so you can create an application that run fully in the
browser

The tree can change depeding on different actions done by the user by
changing the HTML tree dynamically. It is possible to create dynamic
applications.




2014-06-18 18:11 GMT+02:00 Andrew Gibiansky <andrew.gibiansky at gmail.com>:

> Could you elaborate on how this is better/different from blaze-html?
>
> I'm a bit confused - is it just the same thing but works with Haste, while
> blaze-html doesn't? What's the main idea?
>
> Thanks!
> Andrew
>
>
> On Wed, Jun 18, 2014 at 7:02 AM, Alberto G. Corona <agocorona at gmail.com>
> wrote:
>
>> Hi,
>>
>> haste-perch defines builder elements (perchs) for Haste.DOM elements that
>> are appendable, so that dynamic HTML can be created in the client in a
>> natural way, like textual HTML, but programmatically and with the advantage
>> of static type checking. It can be ported to other haskell-js compilers.
>>
>> http://hackage.haskell.org/package/haste-perch
>>
>> This program, when compiled with haste:
>>
>>   main= do
>>    withElem "idelem" $   build $ do
>>    div $ do
>>      div $ do
>>            p "hello"
>>            p ! atr "style" "color:red" $   "world"
>>
>>    return ()
>>
>> Creates these element:
>>
>>    <div id= "idelem">  <-- was already in the HTML
>>        <div>
>>          <div>
>>             <p> hello </p>
>>             <p style= "color:red"> world </p>
>>          </div>
>>        </div>
>>    </div>
>>
>> Since the creation is in the browser, that permit quite dynamic pages for
>> data
>> presentation, and interctive textual (a.k.a "serious") applications and,
>> in general
>> the development of client-side web frameworks using haskell with the
>> haste compiler.
>>
>>
>> See the README in the git repository:
>>
>> https://github.com/agocorona/haste-perch
>>
>> --
>> Alberto.
>>
>> _______________________________________________
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>> Haskell at haskell.org
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>>
>>
>


-- 
Alberto.
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