why dojo the dojo toolkit.mht

dojo学习资料,从初级开始学起,是初学都认识dojo的好帮手.

and other=20
  IP rights around the toolkit. No source control access of any sort is=20
  available. YUI is edge-cached on Yahoo's CDN for use by all.=20
  <LI><B>JQuery: </B>A minimalist system focused primarily on operating =
on=20
  existing DOM structures, JQuery features a hybrid XPath/CSS query =
language=20
  (Dojo uses standard CSS 3 queries) and provides a rich set of options =
and=20
  operations on the results of these queries. JQuery packs Ajax, =
effects, and=20
  other utilities into a small core (beating all but MooTools). While =
there is=20
  no widget or package system in JQuery per sae, 3rd party component =
libraries=20
  are available which build on top of JQuery. The JQuery community is =
highly=20
  active, usually helpful, and external contributions and patches are =
accepted.=20
  Good docs for the system are readily available. JQuery is =
dual-licensed MIT=20
  and GPL with all copyrights resting with John Resig. It is not clear =
how IP=20
  rights are assigned to John by other contributors and under what =
terms.=20
  Several frameworks (notably Drupal) integrate JQuery.=20
  <LI><B>EXT:</B> Like Dojo's Dijit system, EXT is a component library. =
It=20
  features a large number of consistent, good looking widgets with an =
emphasis=20
  on pixel-perfect layout and desktop-like UIs across browsers. =
Originally=20
  developed to run on top of YUI and later JQuery, EXT now has it's own=20
  low-level library, removing the need for 3rd party dependencies. The =
EXT=20
  community is very active and good documentation is available for the =
library.=20
  It is licensed under the terms of the LGPL and commercial licenses of =
various=20
  forms are available. It is not clear whether or not external =
contributions are=20
  accepted (and under what terms) and anonymous subversion access is =
limited to=20
  those who financially support the project in some way.=20
  <LI><B>GWT: </B>Directly integrating server-side development and =
client-side=20
  development, GWT takes the perspective that JavaScript is a bug to be =
solved=20
  and uses advanced compiler technology to allow developers to write in =
Java and=20
  generate dynamic, JavaScript based UIs in the Google style. The =
default widget=20
  set is a strict subset of those provided by Dijit, but GWT takes great =
pains=20
  to optimize all generated code. A growing trove of add-on libraries =
are=20
  available to enhance the default components. Unlike YUI and EXT, GWT =
is being=20
  run as a real Open Source project, allowing external committers, and =
doing=20
  development in the open while managing IP issues in a very =
sophisticated=20
  manner (CLAs, code review, etc. Much like Apache or Dojo).&nbsp; GWT=20
  applications can only be written in Java and are most often deployed =
on Java=20
  containers. Good documentation is available and a thriving community =
is=20
  helpful.</LI></UL>
<P></P>For the sake of comparison, Dojo:=20
<P>
<UL>
  <LI>Allows external committers and uses CLAs (like GWT or Apache) to =
ensure=20
  that there are no IP issues
  <LI>Is very liberally licensed and provides anonymous SVN access to =
everyone.=20
  Committer privs are earned
  <LI>Provides a relatively rich client-side component set but does not =
require=20
  tight binding to any server-side language ("protocols, not APIs")=20
  <LI>Attempts to provide a balance between on-the-wire size and =
common-case=20
  functionality. Dojo Base is similar in size to Prototype.=20
  <LI>Is very conservative about not stepping on the toes of other code =
in your=20
  pages and preserving the global namespace=20
  <LI>Is edge-cached on AOLs CDN for use by all
  <LI>Provides a package system which makes knowing which order to load =
things=20
  in a moot problem
  <LI>Allows for incremental enhancement via markup and provides a very=20
  easy-to-use widget system for building your own reusable components =
which can=20
  then be easily instantiated via markup. </LI></UL>
<P></P>
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<DIV id=3Dcomments><A id=3Dcomment-3376></A>
<DIV class=3Dcomment>
<H3 class=3Dtitle><A class=3Dactive=20
href=3D"http://dojotoolkit.org/book/dojo-book-0-9/introduction/why-dojo#c=
omment-3376">The=20
only thing to add from my side...</A></H3>
<DIV class=3Dsubmitted>Submitted by bornmw on Mon, 07/09/2007 - =
19:33.</DIV>
<DIV class=3Dcontent>
<P>would be DOJO internals based on Aspect Oriented Programming.<BR>AOP =
adds=20
another level of flexibility making it much easier to customize DOJO =
behavior.=20
And since no framework has full support for concrete project =
requirements=20
customization plays a very important part in the development =
process.<BR>Adding=20
custom behavior encapsulated in an aspect (JS method) proved to be very =
helpful=20
with our DOJO-based projects.</P></DIV>
<DIV class=3Dlinks>
<UL class=3Dlinks>
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id=3Dcomment-3815></A>
<DIV class=3Dcomment>
<H3 class=3Dtitle><A class=3Dactive=20
href=3D"http://dojotoolkit.org/book/dojo-book-0-9/introduction/why-dojo#c=
omment-3815">And=20
D.O.H</A></H3>
<DIV class=3Dsubmitted>Submitted by samiam on Wed, 07/18/2007 - =
15:14.</DIV>
<DIV class=3Dcontent>
<P>The unit test framework (not technically dojo-specific but ships with =
dojo=20
and is nicely integrated) is another big plus for collaborative, team=20
development with dojo.</P>
<P>Sam</P></DIV>
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id=3Dcomment-5613></A>
<DIV class=3Dcomment>
<H3 class=3Dtitle><A class=3Dactive=20
href=3D"http://dojotoolkit.org/book/dojo-book-0-9/introduction/why-dojo#c=
omment-5613">Someone=20
needs to address these 2 comments...</A></H3>
<DIV class=3Dsubmitted>Submitted by Karl on Tue, 09/04/2007 - =
16:09.</DIV>
<DIV class=3Dcontent>
<P>Both comments seem to be pretty concrete suggestions, how should we =
go about=20
integrating them into this page? Or should we even?</P>
<P>-Karl</P></DIV>
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<DIV class=3Dindented><A id=3Dcomment-5626></A>
<DIV class=3Dcomment>
<H3 class=3Dtitle><A class=3Dactive=20
href=3D"http://dojotoolkit.org/book/dojo-book-0-9/introduction/why-dojo#c=
omment-5626">I=20
Would Say No...</A></H3>
<DIV class=3Dsubmitted>Submitted by criecke on Tue, 09/04/2007 - =
23:24.</DIV>
<DIV class=3Dcontent>
<P>... we shouldn't integrate them. Not because they're not great =
comments, or=20
they're unimportant ... I'm just afraid if we start trumpeting =
individual=20
features, there'll be no good place to stop. We need to keep the intro=20
short.</P></DIV>
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id=3Dcomment-8163></A>
<DIV class=3Dcomment>
<H3 class=3Dtitle><A class=3Dactive=20
href=3D"http://dojotoolkit.org/book/dojo-book-0-9/introduction/why-dojo#c=
omment-8163">What=20
about ZK framework?</A></H3>
<DIV class=3Dsubmitted>Submitted by RedTony on Mon, 11/05/2007 - =
10:43.</DIV>
<DIV class=3Dcontent>
<P>Nice high-level comparison of the different AJAX frameworks out =
there... but=20
I miss one I pretty much like, I've been myself writing a pre-Analysis =
document=20
comparing some of these tools, and these two were the ones we chose for=20
implementing a new architectural project. What I most like from Dojo is =
the=20
server-independence, as no compilation is required, while ZK I would say =
is=20
pretty easier to learn and use (although *maybe* not so powerful).</P>
<P>Thanks in advance ;)</P>
<P>Red!</P></DIV>
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