async await执行顺序

async await实际上是promise的语法糖

new Promise((resolve, reject) => {
  //位置1
  resolve()
}).then(() => {
  //位置2
})

async function async1() {
  console.log('async1 start')
  await async2()
  console.log('async end')
}
async function async2() {
  console.log('async2')
}
async1()

await后面的代码async2()相当于放在位置1处，下面行的console.log('async end')相当于放在位置2处