UI is the first thing which sells your application and it has been a while since we have thought to look for an alternative framework for developing UI other than Javascript. Suddenly the adoption of JS based framework like AngularJS, ReactJS, UI5 and D3JS have made Javascript the de-facto standard to create and build your UI. But is it the only option we have and the bigger question is why or why not some other tech stack replaces Javascript on UI. Know the dark side of the Javascript frameworks for building UI, its limitation, its bad parts and learn to which extent you can push Javascript while developing UI. Stay Connected with us! Mail us: admin@ui5cn.com connect@ui5cn.com Youtube: https://www.youtube.com/c/UI5CommunityNetwork?sub_confirmation=1 Facebook: https://www.facebook.com/goui5cn Twitter: https://twitter.com/ui5cn Google+ : https://plus.google.com/+UI5CommunityNetwork

2. Definitive Guide vs. Good Parts

3. Long Road for Standardization
Implicit Casting ( == or === ) Which should be used?
Implicit Casting
Example 1

4. Long Road for Standardization
• No strict typing of variables
• Confusing variable types,
NaNis a number?
Loose Syntax
Example 2

5. Long Road for Standardization
Not really logical.
NaN == NaN // false.
Why?
Debugging
Example 3

6. Long Road for Standardization
OOP ?
Is it there or not? No class only prototyping.
No class only prototyping !
Example 4

7. Javascript Application Development
Hybrid AppWebsite/Web App Native App
• What if you disable
Javascript on
your Browser?
• Non-optimized JS
files take ages to
load and reduces
performance.
• Offline Features?
• Easy to develop Cross Platform Apps
- Android and iOS taken care of but
what about versions of each of them?
- What about taking care of each
screen size?
- Work with what you are provided with.
• Extremely bad performance on low-mid
end devices.
•Offline working still an issue if it depends
on external JS Library.
• NativeScript and
React-Native to rescue
• Replaces HTML5 with
native XML components
• Third Party Components
and newer SDK
- Lag in Development time
- Limited features
• Offline Features
Still an issue if not
handled properly.

8. Don’t worry we had a similar reaction

9. Why still go for Javascript
• Gaining Standardization Slowly
• Strong typing on its way
• Better OOP functionality in newer versions
• With node and NPM offline features a reality
• Server-side with JS too
BONUS: Simple to Learn

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