fundamentals

11 Mar 2018

Value vs Reference: Deep vs Shallow

A short tutorial on object copying in JS and the distinction between a shallow and deep copies, and values and references.

09 Mar 2018

Draw Photo Histograms: D3 + Canvas

Exploring histograms using vanilla JavaScript, D3, and the FileReader API.

06 Mar 2018

Histograms in D3 and Observable HQ

An introduction to creating histograms in D3 and the use of Observable HQ to make interactive notebooks for data exploration.

05 Mar 2018

Prototypal Inheritance Basics

What are prototypes and what does prototypal inheritance mean in JavaScript? Covers the new keyword, Object.create, and ES5 class syntax.

31 Dec 2017

Scope & Closures: let vs var in JavaScript

Closures allow a function to retain information about its context after the function has returned. We provide examples and cases where closures can be useful.