Advanced JavaScript techniques

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Rajasekharan Vengalil

Technologie

FUNCTIONS

Functions are first class
citizens

•Callbacks
•call, apply
•Context

OO IN JAVASCRIPT - CLASSES

Designing classes

•Member data &
methods
•Access control
•A note on “new”

CLOSURES

Closures

•What are they?
•Some use cases
•Private members
•Backing data for accessors

VARIABLE HOISTING & SCOPES

Static typers beware!

•Only functions form variable scope
•Variables get “hoisted”
•Declare everything at the top
•Use immediate functions to limit
scope of locals in global code

JAVASCRIPT OBJECT NOTATION (JSON)

JSON

•What is JSON?
•Browser support for
JSON
•JSON-P

DEBUGGING

Some pointers

•IE developer tools
•“debugger” keyword
•“console.log” is your
friend

Resources

Some Links
Read “JavaScript Patterns” by Stoyan
Stefanov
Eval Console

Shameless Plug
bit.ly/avranju
rajave@microsoft.com
 @avranju

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Advanced JavaScript techniques

1. ADVANCED (MAYBE?) JAVASCRIPT TECHNIQUES Rajasekharan Vengalil bit.ly/avranju | @avranju Developer Evangelist Microsoft Corporation

2. My DEMO! super- duper eval console

3. FUNCTIONS Functions are first class citizens •Callbacks •call, apply •Context

4. OO IN JAVASCRIPT - CLASSES Designing classes •Member data & methods •Access control •A note on “new”

5. CLOSURES Closures •What are they? •Some use cases •Private members •Backing data for accessors

6. VARIABLE HOISTING & SCOPES Static typers beware! •Only functions form variable scope •Variables get “hoisted” •Declare everything at the top •Use immediate functions to limit scope of locals in global code

7. JAVASCRIPT OBJECT NOTATION (JSON) JSON •What is JSON? •Browser support for JSON •JSON-P

8. DEBUGGING Some pointers •IE developer tools •“debugger” keyword •“console.log” is your friend

9. Resources Some Links Read “JavaScript Patterns” by Stoyan Stefanov Eval Console Shameless Plug bit.ly/avranju rajave@microsoft.com  @avranju

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