Iterating over sparse arrays @ Ash Searle’s Blog
This is a quick tip for iterating over arrays and other objects with a length property. It’s particularly suitable for sparse arrays, without having to worry whether any methods have been added to the prototype chain.
Iterating over sparse arrays @ Ash Searle’s Blog
Users of the Prototype library who are also rolling their own code can use this, as Prototype does some modifications to Array’s prototype that breaks traditional for … in behavior.
Tags: javascript, iteration, arrays, prototype
