Functions in JavaScript | What is a function and how to use it
In this video we will talk about functions in JavaScript and I will explain what a function is, how to declare a function in JavaScript and how to use it.
During this video we will also talk about more advanced things like anonymous functions, arrow functions, variable scope and passing parameters to a function.
Functions are a very important concept in programming, they help us to better organize our code and avoid duplicate code, that is, not to write the same code more than once.
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🕗 Table of Contents
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00:00 - What is a function
01:27 - How to declare and use a function in JavaScript
06:19 - Anonymous functions
08:16 - Arrow functions
09:43 - Example of how to avoid duplicate code
12:53 - Scope of variables
15:28 - Passing parameters to a function
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