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The different ways to define a function in JavaScript

So you want to create a function in JavaScript?

You. Have. Options:

1 — Declaration Function

function sum(a, b) { return a + b; } 

2 — Expression Function

// Can be named:
(function sum(a, b) { return a + b; });
// Or anonymous (AVOID)

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jsComplete’s Medium Publication — jsComplete is a FREE software educational library focused on JavaScript, Node, React & GraphQL. It has video courses, books, articles, and interactive lessons.

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Samer Buna

Samer Buna

Author for Pluralsight, O'Reilly, Manning, and LinkedIn Learning. Curator of jsComplete.com

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