[周分享] 前端周分享-Redux、JavaScript、纯函数、Async的错误处理技巧

function test() {
 let arr = [3, 2, 1]
 arr.forEach(async item => {
  const res = await fetch(item)
  console.log(res)
 })
 console.log('end')
}

function fetch(x) {
 return new Promise((resolve, reject) => {
  setTimeout(() => {
   resolve(x)
  }, 500 * x)
 })
}

test()