Learn Enough JavaScript to Be Dangerous | Learn Enough to Be Dangerous
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Learn to speak the programming language of web browsers

Learn Enough JavaScript Beginning Development 01

Learn Enough JavaScript to Be Dangerous teaches you the basics of JavaScript, the only language that can be run inside web browsers. You’ll learn the latest JavaScript technologies (including Node.js and ES6) en route to deploying a real interactive website to the live Web.

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320 pages
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7 hours
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course
11 chapters
 
59 videos
 
75 exercises

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Learning Materials

The Learn Enough tutorials are available as books, downloadable videos, and online courses. Learn Enough JavaScript to Be Dangerous includes 320 pages of book content and 7 hours of video.

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Full online version of the book content, embedded streaming videos for all sections, exercises with editable answers, progress tracking, and membership in the Learn Enough Society (community exercise answers, private chat group). Pause your subscription at any time!

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Downloadable versions of all screencast videos. Note: Does not include ebooks, so the video/ebook bundle is strongly recommended. Files are yours to keep forever!

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Beginning Development BUNDLE
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Once you’ve got Web Basics down, it’s time to learn the foundations of developing web applications. We start with learning to manipulate the page with JavaScript to do cool things. (Really, really cool things.) Then, we’ll focus on the Ruby language, an elegant and powerful language that has taken the Web by storm. We start with the Ruby language itself, and then will cover Sinatra, a simple Ruby web framework, to get you ready to dive into the Ruby on Rails tutorial.

All bundles include the course version of all the tutorials (streaming video, exercise answers, and progress tracking), and access to the Learn Enough society to get help if you need it.

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Learn Essential Skills

In the JavaScript tutorial

Huntington

The native programming language of the World Wide Web

Making sites respond to actions

As the only language that can be executed inside web browsers, JavaScript is an essential part of every programmer’s toolkit. Learn Enough JavaScript to Be Dangerous is designed to get you started writing practical and modern JavaScript programs as fast as possible, using the latest JavaScript technologies (including Node.js and ES6), with a focus on the real tools used every day by software developers.

Unlike most JavaScript tutorials, Learn Enough JavaScript to Be Dangerous treats JavaScript as a general-purpose programming language right from the start, so the examples won’t be confined to the browser. The result is a unusually broad and solid foundation not only for web development, but for computer programming generally.

To be productive with JavaScript, you don’t have to know everything about it—you just have to learn enough to be dangerous.

Js hello world live

JavaScript basics

Fundamentals of browser scripting

Learn Enough JavaScript to Be Dangerous gets off to a quick start by deploying a simple but real dynamic site to the live Web. You’ll also learn how to use JavaScript to write a simple shell script and to execute JavaScript interactively using a Read-Eval-Print loop (REPL). En route, you’ll discover that you already own the best interactive system for learning JavaScript—a computer!

Repl indentation

Common data structures

How to manage and handle data

Next, you’ll take a tour of common data structures in JavaScript, including Strings, Arrays, and other native objects like Dates and Regular Expressions. These structures form the essential building blocks for longer programs.

Listener console

Functions, object, and prototypes

Perform actions in an efficent way

You’ll then learn about functions, objects, and prototypes. This section of the tutorial includes the rarely taught but elegant and hugely valuable set of techniques called functional programming—the same kind of programming used by Google to process data from the Web. You’ll also learn about the important practice of test-driven development en route to writing and publishing a simple Node module.

Initial gallery

Add interactivity to websites

Enhance usability and interaction

The final chapters of Learn Enough JavaScript to Be Dangerous cover Document Object Model manipulation to make dynamic, interactive websites; professional-grade shell scripts with Node.js; and an image gallery application that fulfills a promise made in Learn Enough CSS & Layout to Be Dangerous. The result is a well-rounded command of JavaScript, with skills ranging from file manipulation at the command line to a beautiful photo application on the live Web.

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Happy people

saying nice things!

Jimmywales
Jimmy Wales Founder, Wikipedia

Q: What is Jimmy Wales' favorite book?

A: It changes often. At the moment, it’s Ruby on Rails Tutorial by Michael Hartl. :)


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About the Javascript Tutorial

I have just completed the Learn Enough JavaScript to Be Dangerous tutorial and I want to thank you for this really great course… I am impressed how much added value the videos provide. I really appreciate the clarity of the explanations which allow to better understand programming concepts and how to explain them. Top notch!

— Alan K.
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About the Learn Enough Courses

I must say, this Learn Enough series is a masterpiece of education. Thank you for this incredible work!

— Michael K.

I must say, this Learn Enough series is a masterpiece of education. Thank you for this incredible work!

— Michael K.

I want to thank you for the amazing job you have done with the tutorials. They are likely the best tutorials I have ever read.

— Pedro I.

I have been trying to learn web development and programming on and off for the past 3 years and your website is the first one that I feel does the job right.

— Janelle S.

Just bought the new ebook and want to say keep up the great work!! The Learn Enough to Be Dangerous series re-ignited my desire to code after 10+ years of “meh”.

— Diane Y.

The Learn Enough Society and the courses are incredible. It’s the best value in the market of online courses in my opinion. Like you say, it’s learning to tech, which is very useful in our world.

— Sébastien D.

I just meant to tell you: your tutorial books from the Learn Enough series are awesome! The books are well-written, clear, concise, super-useful, and even fun to read. Thank you so, so much for this! I have bought the first three and will buy whatever you publish next. Keep up doing this very good work and thanks again.

— Pierre W.

Have been following the whole “Learn Enough to Be Dangerous” series and am VERY impressed with it. I am a project manager who works with software developers daily. These sessions have provided me with a huge amount very useful information, to the extent that I now not only understand what the dev guys are talking about, but am starting to use the tools (command line, Git, etc.) that they use.

— Brian
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Michael Hartl is one of the best educators around when it comes to web development. I have been following him for a long time, and everything he produces is top quality. If you are looking for a quick way to become a thorough and productive professional web developer, Hartl’s books are a great place to start.

— Abram Bailey
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About the Author
Michael-hartl

Michael Hartl

Michael Hartl is the creator of the Ruby on Rails Tutorial, one of the leading introductions to web development, and is cofounder and principal author at Learn Enough. Previously, he was a physics instructor at the California Institute of Technology (Caltech), where he received a Lifetime Achievement Award for Excellence in Teaching. He is a graduate of Harvard College, has a Ph.D. in Physics from Caltech, and is an alumnus of the Y Combinator entrepreneur program.

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