Javascript is the standard for web development today. While many developers come from a Java background, Javascript's ecosystem evolves more dynamically than Java. Javascript's syntax looks similar to Java but its execution environment is completely different. Types like String and Number behave differently than in Java, and Functions are objects that can have methods. AngularJS is an example of an MVW framework that allows for single page applications with two-way data binding and templating. The Javascript ecosystem includes many frameworks, tools, and resources available both commercially and through open source.

1. Javascript explained
for Java developers

2. Javascript is the “de facto” standard of the Web today
still… many of the developers are coming from the Java world

3. Javascript ecosystem evolves more dynamically
… than what Java devs are used to

4. Javascript script syntax has nothing to do with Java
except that is looks familiar
Javascript execution environment is completely different from Java envs
Javascript community was built mainly by millennials
Java is getting old 

6. Types
String, no char
Number, no int
Object
Array, Function (both are objects)

7. Type Typeof
Object ‘object’
Function ‘function’
Array ‘object’
Number ‘number’
String ‘string’
Boolean ‘boolean’
null ‘object’
Undefined ‘undefined’

8. Style
return
{
ok: false
};
return {
ok: true
};

9. Operators
0 == ‘’ // true
0 == ‘0’ //true
‘’ == ‘0’ //false

10. Weird types, weird values
NaN === NaN //false
NaN !== NaN // true
typeof NaN // Number
typeof null // Object

11. Falsy / Thruthy
false
null
Undefined
‘’
0
NaN

12. var me = {
name: ‘Jana’,
age: 32,
children: ‘Maybe some day’,
pets: [{
name: ‘Baron’,
species: ‘dog’
}]
};

13. Java has classes, methods, constructors
Javascript has functions
Function is an object
(actually with each function declaration we create couple of objects )
Every Function can have methods
Functions better NOT be declared in if or for statements

15. Function scope
demo

16. Javascript, in Crockford’s own words, it’s conflicted in its nature
functional language
with dynamic typing and prototypal inheritance
Inheritance demo

17. AngularJs MVW framework
HTML augmentation, both ways binding, templating
Single page applications, rich and fluid UI’s
AnuglarJs demo

18. Javascript ecosystem

19. Javascript frameworks

20. Javascript tools

21. proprietary frameworks vs. open source
exhaustive manuals vs. github docs and cheat sheets
expensive trainings vs. quick and available MOOC

23. Thank you!