Hi, I’m Swizec Teller. Over the years I've helped over 10,000 engineers hone their craft. 

With React+D3v4 you'll learn the basics of building fast data visualization components in about an hour. Get started immediately without installing anything.

I based React+D3v4 on 20 years of experience with learning how to code on my own, reading blogs and articles, listening to professors, and working with mentors.

Don't know React? React+D3v4 starts at the very beginning.

Struggling with D3? Every function is explained.

Christina

I bought your course Because D3.js is highly flexible, and writing a bunch of method chaining sucks for D3

Frontend Engineer

Francois

I'm a react veteran who has always wanted to learn D3. I know enough about it to know there will be some quirks integrating with react, so figured your book would save me and my team from having to figure those out on our own. 

I use React because it is the sane way of doing things. I use D3 because I have to. I want nice interactive charts. I want to stay sane.

Software Engineer

Amit

In my old age, I love having practical examples to help me learn new things faster.

D3's docs alone are okay but marrying them with React (as a react newbie) is not as straightforward as someone handholding you through the process. And, since I don't have hours after work or on weekends to hack on things like I used to before I was married (or had kids), I need to optimize my learning.

I already owned your previous version and know it would be worth my money to buy the updated version.

Thanks for all of the hard work!

Freelance Engineer

Become a data visualization engineer with React + D3v4

After the blackbox axis example above, you'd be right to think something like *"Dude, that looks like it's gonna get hella repetitive. Do I really have to do all that every time?"*

Yes, you do. But! We can make it easier with a higher order component - a HOC.

Higher order components are one of the best ways to improve your React code. When you see more than a few components sharing similar code, it's time for a HOC. In our case, that shared code would be:

- rendering an anchor element
- calling D3's render on updates

With a HOC, we can abstract that away into something called a [class factory](https://en.wikipedia.org/wiki/Factory_method_pattern). It's an old concept coming back in vogue now that JavaScript has classes.

You can think of it as a function that takes some params and creates a class – a React component. Another way to think about HOCs is that they're React components wrapping other React components and a function that makes it easy.

Let's build a HOC for D3 blackbox integration. We'll use it in the main example project.

A `D3blackbox` HOC looks like this:

Introduction

The Meat Start

Simpler Environment

The New Meat

Animation

Animating React Redux

Speed Optimizations

Conclusion

Appendices

A D3 blackbox higher order component – HOC