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  1.  Home
  2. WEB400
  3. August 2015

Re: A Responsive Single Page App (SPA) with 3 Issues to Consider

Gent's

Angular is like EXT JS very advanced OO javascript and therefore they
have a steep lerning curve not only specially for old Cobol and RPG
programmers but also for .ASP and PHP programmers since OO
javascript may be quite different from traditional class based OO
languages since OO javascript also uses prototyping that may be
combined with the traditional class based OO.

If I should start again I would start with taking classes or reading a book
in the basic concept of OO javascript. That is a huge time saver before
you start using any OO javascript based framework and btw node.js
and websockets.

Also use a network outside the IBM I community, they are all around
you and you will connect with young people to whom OO javascript
is natual. Many of these free groups can be found on http://www.meetup.com/





On Wed, Aug 5, 2015 at 5:57 AM, Bradley Stone <bvstone@xxxxxxxxx> wrote:

I looked into Angular and I saw nothing there that I needed, especially for
basic SPAs. jQuery (and a few addons) is all I've needed (so far).

I'm sure if I dug deeper maybe I'd find something worth using, but I think
it's much more work than needed.

My main thing was I did a few of the tutorials/lessons online and kept
thinking "ok.. how do I load data dynamically from my server... XML, JSON,
or the next big thing.... static data is useless!"

I really grow tired of these examples where the data "fits" the lesson
(because it's created specifically FOR the lesson) when in reality the data
and business rules are the wildcard in the project.

Brad
www.bvstools.com


On Tue, Aug 4, 2015 at 6:45 PM, Kelly Cookson <KCookson@xxxxxxxxxxxx>
wrote:

Kevin,

I definitely am a JavaScript newbie, which is one reason I've been
delaying jumping into Angular. I want to get more familiar with
JavaScript
first. Also, I am waiting for other developers in my shop to learn
Angular
so I can lean on them for help.

I think your assessment of Angular correlates with what I've heard from
other people using Angular: it has some great features, some difficult to
understand features, and is not for developers who lack a solid
understanding of web development fundamentals.

Thanks,

Kelly Cookson
IT Project Leader
Dot Foods, Inc.
1.217.773.4486 ext. 12676
kcookson@xxxxxxxxxxxx


-----Original Message-----
From: WEB400 [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Kevin
Turner
Sent: Tuesday, August 04, 2015 6:40 PM
To: Web Enabling the IBM i (AS/400 and iSeries)
Subject: Re: [WEB400] A Responsive Single Page App (SPA) with 3 Issues to
Consider

Angular has some nice intuitive features, and others that are downright
bizarre. Most out of the box directives (you can write your own too) are
bound to properties in the controller scope either directly or via
expressions. The controller is a JavaScript component of an angular
module,
and the scope is like the private data repository for the page. One
thing
is for sure, you have to have a pretty deep understanding of JavaScript -
not just the simple syntax but how closures, objects and injection work
to
be able to understand Angular properly. Personally I don't think it is a
Framework that a JavaScript newbie will cope with too well (not that I am
suggesting you are one of those :) ) On the positive side, there are
plenty of examples and helpers on StackOverflow.



-----Original Message-----
From: WEB400 [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Kelly
Cookson
Sent: 04 August 2015 20:02
To: Web Enabling the IBM i (AS/400 and iSeries)
Subject: Re: [WEB400] A Responsive Single Page App (SPA) with 3 Issues to
Consider

Mark,

Yeah, it looks like Angular is becoming the standard framework for
creating SPAs in our shop. I just haven't had time to learn it yet.
(It's a
BIG learning curve going from IBM i COBOL to contemporary web
development.)

I definitely agree that SPAs are not a magic bullet for every situation.
I
think an SPA might be useful for static content under some circumstances:

1. If you have valued mobile users that have slow, limited bandwidth
connections to the Internet, then an SPA can help minimize the amount of
information downloaded from the server. This can improve user experience.

2. If the number of concurrent users is stressing the capacities of your
servers, then an SPA can minimize the amount of bandwidth used, and hence
the load on your servers.

Even under the circumstances of a static website, it can depend. If your
website is basically a bunch of links to PDF files the users have to
download, then I don't know how much an SPA would help for static content
in the form of PDF downloads.

Thanks,

Kelly Cookson
IT Project Leader
Dot Foods, Inc.
1.217.773.4486 ext. 12676
kcookson@xxxxxxxxxxxx



-----Original Message-----
From: WEB400 [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Mark
Murphy/STAR BASE Consulting Inc.
Sent: Tuesday, August 04, 2015 1:43 PM
To: Web Enabling the IBM i (AS/400 and iSeries)
Subject: Re: [WEB400] A Responsive Single Page App (SPA) with 3 Issues to
Consider

I guess this comes down to using the right tool for the job. SPA's sound
like a good tool to build an interactive database application where a
"page" really doesn't make sense. Why would you want to drop into the
middle of a transaction, or would that even be a good thing to do? But,
for
navigating a corporate web site that is document based, it just doesn't
seem to fit the bill. I don't see one approach ever fitting all
situations.
Maybe what you really need is an MVC framework providing navigation with
the content being your SPA when appropriate, and static pages when that
is
appropriate.

Mark Murphy
STAR BASE Consulting, Inc.
mmurphy@xxxxxxxxxxxxxxx


-----Kelly Cookson <KCookson@xxxxxxxxxxxx> wrote: -----
To: "Web Enabling the IBM i (AS/400 and iSeries)" <web400@xxxxxxxxxxxx>
From: Kelly Cookson <KCookson@xxxxxxxxxxxx>
Date: 08/04/2015 01:43PM
Subject: Re: [WEB400] A Responsive Single Page App (SPA) with 3 Issues to
Consider

One thing I have grown to dislike about having a single page app is
browser caching. I make changes to the files used for content within the
single page app, but I often have to clear my browser cache for the
changes
to show up.

Add this to the fact that users cannot add particular "pages" to their
browser favorites. A favorites link always takes the user to the home
page.

I'm guessing there are methods for getting around these issues. If this
were going to be a large website that a business had to spend money to
maintain, or a website used by tons of people where maximum performance
was
a necessity, then I would probably do more research to resolve the above
issues. I definitely see the maintenance and performance benefits of
single
page apps.

But this is just a hobby site and unlikely to be used by many people. I
don't mind spending time on it because, well, that's what hobbies are
for...spending time. So I'm going back to making it a traditional web
site
with multiple HMTL files.

The link http://www.socialhope.info/code/SocialHope_REBOOT.zip will
continue to have the source code for the single page app version of the
website, for those who find this thread in a search or simply want to
download the code later.

Kelly Cookson
IT Project Leader
Dot Foods, Inc.
1.217.773.4486 ext. 12676
kcookson@xxxxxxxxxxxx

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