From syntax and features every JavaScript developer needs to higher-level concepts you shouldn't miss, here are eight ways to make the most of JavaScript.

First is the use of the class keyword and the object-oriented features of JavaScript. You can now create classes with public and private methods and properties and take advantage of inheritance just ...

Use popular 'grammar of data' syntax to filter and subset your two-dimensional JavaScript arrays and more. Here's how to use Arquero for data wrangling in Observable JavaScript and Node.js.

Almost all objects in JavaScript inherit from Object (remember that JavaScript uses prototype-based inheritance) so imagine a scenario where you altered this prototype.

Now, whenever there’s a failed lookup on an instance of **Dog**, JavaScript will delegate that lookup to **Animal.prototype**. If this is still a little fuzzy, re-read A Beginner’s Guide to JavaScript ...