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Javascript Closures

Javascript Closures
Introduction
The Resolution of Property Names on Objects
Assignment of Values
Reading of Values
Identifier Resolution, Execution Contexts and Scope Chains
The Execution Context
Scope chains and [[scope]]
Identifier Resolution
Closures
Automatic Garbage Collection
Forming Closures
What can be done with Closures?
Example 1: setTimeout with Function References
Example 2: Associating Functions with Object Instance Methods
Example 3: Encapsulating Related Functionality
Other Examples
Accidental Closures
The Internet Explorer Memory Leak Problem
Introduction
Closure A "closure" is an expression (typically a function) that can have free variables together with an environment that binds those variables (that "closes" the expression).
Closures are one of the most powerful features of ECMAScript (javascript) but they cannot be property exploited without understanding them. They are, however, relatively easy to create, even accidentally, ......

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