新版本的变更 / ES2015
let and const instead of var
Arrow functions
Template literals
Classes
Destructuring assignment
Default parameters
Rest and spread operators
for...of loops
Promise
Modules: import/export
Rest and spread operators
此示例属于完整版，可在应用商店购买：
JavaScript Recipes
App Store
Code Recipes
App Store
已经购买？登录您的账户