A function is a parametric block of code defined once and called multiple times later. In JavaScript a function is composed and influenced by many components:

  • JavaScript code that forms the function body
  • The list of parameters
  • The variables accessible from the lexical scope
  • The returned value
  • The context this when the function is invoked
  • Named or an anonymous function
  • The variable that holds the function object
  • arguments object (or missing in an arrow function)

This post teaches you six approaches to declare JavaScript functions: the syntax, examples and common pitfalls. Moreover, you will understand when to use a specific function type in certain circumstances.

#javascript #programming

6 Ways to Declare JavaScript Functions
3.30 GEEK