Question

我正在运行for循环并在for循环中调用REST API。假设userArray包含5个用户，那么API被调用一次，得到hello五次。那么如何在循环内运行API调用5次在节点js中

for(user in userArray){
   var result=apiddetails.getuserdetails(user);
   console.log(result);
   console.log("hello"); 
}

Answer 1

您可以尝试使用 async-await

for(user in userArray){
   var result = (async function(){
      return await apiddetails.getuserdetails(user);
   })(user); //pass user as the argument
   console.log(result);
   console.log("hello"); 
}

Answer 2

这是使用承诺的解决方案。

var promises = [];
for(user in userArray){
   var promises.push[apiddetails.getuserdetails(user)]; //asumming you are returning promise from this function 
}
Promise.all(promises).then(function(values) {
console.log(values);
});

如何在节点js中同步运行in循环

2 个答案: