async.await.array.js

function b(c) {
  return new Promise((resolve,reject) => {
    resolve(c * 2)
  })
}

const list = []

async function a() {
  for(let i=1;i<=5;i++){
    list.push(await b(i))
  }
  return list
}

async function e() {
   console.log(await a())
}

e()

/*

log:

[2,4,6,8,10]

*/

async.await.js

function b(c) {
  return new Promise((resolve,reject) => {
    resolve(c)
  })
}

async function a() {
  const d = await b("hi")
  return d
}

async function e() {
   console.log(await a())
}

e()

/*

log:

hi

*/