The Role Of Java Script
- 3. • Easy to learn
• Easy to implement
• Immediate results
• Very versatile
The role of JavaScript
- 5. Ajax is to web pages what
instant messaging is to email.
The role of JavaScript
- 6. JavaScript can also make the
web a most frustrating and
insecure experience.
The role of JavaScript
- 7. It is up to us as educators to
teach the sensible use of
JavaScript.
The role of JavaScript
- 8. Behaviour
JavaScript
Look and Feel
CSS
Structure, Semantics
HTML
Logic, Data, Validation
Backend
The role of JavaScript
- 9. • Separation of concerns
Keeping these
layers separated
• Parallel development
has lots of
• On-demand changes
benefits:
are easy to achieve
• Support for all
environments and user
agents.
The role of JavaScript
- 10. JavaScript
CSS
HTML
A traditional web
site would be
something like
this:
Backend
The role of JavaScript
- 12. • Performance
There are
several good
• Server traffic savings
reasons for this:
• Increased usability
through to more
responsive interfaces
• Reduction of redundant
steps.
The role of JavaScript
- 13. • There is no security in
There are several
JavaScript
good reasons
• You cannot expect
speaking against
JavaScript to be enabled
this:
• Maintaining JavaScript is
very hard.
The role of JavaScript
- 14. • JavaScript is the village
Why is
bicycle: everyone can
maintaining
have a ride.
JavaScript hard?
• There is no official
training or
accreditation.
• It is implemented in
browsers and they are
constantly changing
The role of JavaScript
- 15. • We’re at a stage where
Why is
making things work is
maintaining
more important than
JavaScript hard?
creating quality code.
• Re-use is harder and
more expensive than
starting over.
The role of JavaScript
- 17. We have to initiate a change in
perception of JavaScript.
The role of JavaScript
- 18. It is not a toy language but an
integral part of modern web
development.
The role of JavaScript
- 19. Due to its low level of entry it is
a great language to allow
developers access and use your
systems.
The role of JavaScript
- 20. For this we need to define some
educational goals:
The role of JavaScript
- 21. • Building on best
Goals for teaching
practices: progressive
JavaScript:
enhancement,
maintainability,
modularity.
• Removing the random
browser element.
The role of JavaScript
- 22. • Progressive
Progressive
enhancement means
Enhancement
that we add JavaScript
as an interactive layer
onto a working
solution.
• Every step on the way
we test for support
before applying
functionality.
The role of JavaScript
- 23. • Maintainable code is
Maintainability
very hard to find.
• The reason is that we
hack JavaScript together
rather than following
agreed architectures
and methodologies.
The role of JavaScript
- 24. • JavaScript solutions tend
Modularity
to be one-offs without an
easy way to extend or
change to different
needs.
• This stops re-use and
per-case extension.
The role of JavaScript
- 25. This, and the removal of random
browser problems is the job of
JavaScript frameworks.
The role of JavaScript
- 26. Frameworks are there to make
our lives as developers easier -
not be a replacement for
JavaScript.
The role of JavaScript
- 27. There is nothing wrong with
using a framework to make our
code work across different
browsers.
The role of JavaScript
- 28. It is a better way of developing
than following the w3c or ECMA
recommendations to the T and
failing to deliver working code.
The role of JavaScript
- 29. Our goal should be to teach new
developers to develop and
deliver not to fix problems and
write workarounds.
The role of JavaScript
- 30. There are several challenges to
be overcome until we get there.
The role of JavaScript
- 31. • Lack of official
Challenges
JavaScript courses
• Lack of promotion of
code that builds
interfaces - Web
Development is HCI and
CS.
• JavaScript is a Jack of all
trades.
The role of JavaScript
- 32. The market needs good
JavaScript developers, the
support and implementation of
this versatile and easy language
is going nowhere but up.
The role of JavaScript
- 33. It is up for us educators to help
the market hire pragmatic and
quality-oriented developers
directly from school and
university without the need for
internal re-education.
The role of JavaScript
- 34. Christian Heilmann
THANKS!
http://wait-till-i.com
http://slideshare.net/cheilmann
http://scriptingenabled.org
chris.heilmann@gmail.com
The role of JavaScript