In this video you'll learn how ES6's (ES2015) Default Parameters allow you to set default values for any arguments that are undefined when a function is invoked. You'll also learn how to use Default Parameters to make certain arguments required.
In this video you'll learn two new ways to create variables in ES6 (ES2015). They are const and let. To better do that, we'll compare var with let and const by diving into function vs block scope, variable hoisting, and immutability.