js 接口同时执行并返回

Promise.all()写法
链接：https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Promise/all

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自定义方法

// await 接口同时
async function awaitFn(arr = []) {
   
  return new Promise(resolve => {
   
    const promises = arr
    let count = 0

    for (let result of promises) {
   
      result().then(res