Refactor your imperative code into functional code to improve readability and performance. Immutable variables make it much easier to understand what a variable contains. Smaller Scopes make it Easier to Break Code into Sub-Functions. A failure of a particular test will narrow down the problem and cause a regression.
Table of contents
How to Write Clean JavaScript Code with Functional ProgrammingThe Real-World ExampleImmutable Variables make it Easier to ReadSmaller Scopes make it Easier to Break Code into Sub-FunctionsIt is Easier to TestIt is just as Fast as the Procedural SolutionA Note on Other LanguagesFinal ThoughtsSort: