Javascript Closures, Partial Functions, and Currying

Closure and Currying: An Introduction

Closures are an important concept javascript programmers should understand in order to write better code. While this concept might not be evident, we use it often without understanding its implications. No matter how much experience you have in writing javascript code, you might have created closures without realizing it.

Before understanding closures, you must have knowledge of the concept of scope in javascript.