ES2015 Cheatsheet

let vs const (and the old var)

Both let and const are much safer than var because it scopes the declaration within the nearest block.

let

• Use for variable that can be reassigned

const

• Can't be reassigned
• Value has to be set upon declaration

var

• This what we used during the previous version of Javascript.
• It does variable hoisting where it internally moves the declaration(not including the assignment) of the variable from within a function into the top of the method allowing it to be used even before it is declared.

ES2015 Classes

Creating a class

{% gist lyc4n/8ad3136b770bd05f5f2187fd8a30bcf5 es6_class.es6 %}

Inheriting from another class

{% gist lyc4n/8ad3136b770bd05f5f2187fd8a30bcf5 es6_inheritance.es6 %}