Iterator Pattern
Understand how the Iterator pattern defines a standard interface for sequentially accessing elements in various data structures or streams. Learn to implement the iterator protocol in JavaScript and appreciate its role in decoupling traversal logic from data consumption, with practical examples to build efficient iteration mechanisms.
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The Iterator pattern is a fundamental pattern and it’s so important and commonly used that it’s usually built into the programming language itself. All major programming languages implement the pattern in one way or another, including, of course, JavaScript (starting from the ECMAScript2015 specification).
The Iterator pattern defines a common interface or protocol for iterating the elements of a container, such as an array or a tree data structure. Usually, the algorithm for iterating over the elements of a container is different depending on the actual structure of the data. Think about iterating over an ...