Default Parameters(默认参数) in ES6
Template Literals (模板文本)in ES6
Multi-line Strings (多行字符串)in ES6
Destructuring Assignment (解构赋值)in ES6
Enhanced Object Literals (增强的对象文本)in ES6
Arrow Functions (箭头函数)in ES6
Promises in ES6
Block-Scoped Constructs Let and Const(块作用域构造Let and Const)
Classes(类) in ES6
Modules(模块) in ES6