ES6之思维导图

let

const

destructuring

字符串的扩展

数值的扩展

对象的扩展

Promise

const promise = new Promise ((resolve, rereject) => {
  if (/* 异步操作成功 */){
    return resolve(value);
  } else {
    return reject(error);
  }
})

promise.then((value) => {
  // success
}, (error) => {
  // failure
});