JavaScript Functions

person icon Daniel Stern

JavaScript Functions

Explore a world of coding possibilities with the powerful tool known as functions!

updated on icon Updated on Sep, 2023

language icon Language - English

person icon Daniel Stern

architecture icon Development,Web Development,Javascript


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Course Description

“Oh, boy, so you actually learned something today?” – Rick Sanchez.

Functions are part of what makes JavaScript great, and are also one of the most challenging aspects to understand.

Functions can be used to prevent repetition, separate concerns, or make applications that would just be too complicated without them.

As a professional web developer, you can expect to encounter many different kinds of functions every single day, like the ones covered by this course.

“Sometimes science is more art than science.” – Rick Sanchez

In this course, you'll learn the following:

  • How to use functions and what they are

  • How to define functions and several different ways

  • How to call functions as many times as you need

You'll also learn about

  • Function scope and how it effects variables and the functions' children

  • Composing functions with currying and factories

  • Using the this keyword

  • Using callback functions

And much more!

“Nobody exists on purpose.” – Rick Sanchez

Don't hesitate - learning about functions is one of the best tools in the repertoire of anyone who wants to increase their relevance as a JavaScript developer!


What will you learn in this course:

  • Defining JavaScript functions
  • Invoking functions
  • Currying functions
  • Factory Functions
  • Async functions
  • Function scope
  • Callback functions
  • Self-defining functions


What are the prerequisites for this course?

  • No real requirements - having spent at least five minutes tinkering with JavaScript is an asset
JavaScript Functions


Check out the detailed breakdown of what’s inside the course

2 Lectures
  • play icon Introduction / Roadmap 01:37 01:37
  • play icon Why use JavaScript functions? 05:50 05:50
Defining and Invoking Functions
4 Lectures
Function Scope
4 Lectures
Composing Functions
4 Lectures
Asynchronous Functions
3 Lectures
Advanced Functionry
5 Lectures

Instructor Details

Daniel Stern

Daniel Stern

Known in development circles as “the Code Whisperer," Daniel Stern has been believed to possess a supernatural connection to computers ever since he talked the supercomputer Deep Blue off the roof of a twelve-story St. Petersburg apartment building, following its shameful loss to Gary Kasparov. He can often be found singing softly to his tablet, or gently caressing his aluminum keyboard in his arms. Daniel has been working as a front end and full stack developer in the tech industry since 2011. He's developed single-page applications for banks like CIBC, charities like the Ontario Institute for Cancer Research, and at ad agencies like McLaren McCann, TraffikGroup and Olson. Throughout his labors, he's worked on computer programming in his spare time because, well, he's obsessed with it. In addition to being featured in both CSS Weekly and JavaScript weekly, Daniel is well-known throughout the open-source community for maintaining several open-source tools, most notably the Angular.js and LESS-based tool, Range .css and the Angular .js audio tool, ngAudio. In addition to being trusted by the open source community to develop top-quality, functional code, Daniel has also been invited to speak at numerous conferences including Full Stack Conference 2014 in London, England. Daniel is an active learner and very passionate about the following technologies, - Node.js - Angular.js - TypeScript - MongoDB - LESS - Grunt - Yeoman - Many, many, many more

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