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JavaScript – A Different Beast, Part-5: Closures

Previous topic in this series: Scopes and Scope Chain

This is the fifth part of my tutorial on JavaScript. Focus of this series is to introduce developers who are comfortable with other programming languages like Java or C to the idiosyncrasies of JavaScript. Basic JavaScript knowledge is assumed, but is not necessary as the code samples are simple and self-explanatory.


  1. A different beast
  2. Types and Type Conversion
  3. Functions
  4. Scopes and Scope Chain
  5. Closures
  6. Objects without Classes
  7. Inheritance without Classes
  8. Arrays, Maps and the for..each loop
  9. Literals and JSON
  10. Dynamic Programming, Exceptions and Module Pattern

Closures are one of the most esoteric features of JavaScript. Effective usage of closures is a crucial skill needed for web programmers these days. Incidentally, most programmers use them by accident, as we will see shortly. Read the rest of this entry

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