課程鏈接：http://udemy.com/learn-javascript-get-hired-bootcamp
配套文件下載地址：https://github.com/15Dkatz/javascript-bootcamp
GitHub: https://github.com/Li-YangZhong/javascript-bootcamp-master
Arrow functions do not create a ‘this’ object.
A closure is the combination of an inner function and its environment.
Closures are inner functions.
A function environment consists of all variables within scope.
A closure encloses its environment.
A higher-order function is a function that takes one or more functions as arguments or returns a function.
CTRL + ] // indent to the right
CTRL + [ // indent to the left
An object instance “inherits” its parent’s prototype properties.