sady's notebooks

Arrow functions (also known as fat arrow functions) have a shorter syntax compared to traditional function expressions and lexically bind the this value. Arrow functions are also always anonymous. Here we are using the shortest form, where the body is a simple expression and we can drop the parenthesis around the parameter since there is only one:

Classes are a shorthand that make it easier to work with JavaScript's existin prototypal inheritance.

This is a playground to test JavaScript. It runs a completely standard copy of Node.js on a virtual server created just for you. Every one of npm’s 300,000+ packages are pre-installed, so try it out: