如何在Angular2中进行数百次异步调用并相应地更新视图？

Question

I want to perform hundreds of async HTTP Post requests (creating a new resource) in Angular 2 in a simple for loop and update an internal counter that is incremented by one as soon as one HTTP Post request successfully returns. I use rxjs Observables for handling the response from the backend.

However, if I do that I can get into race conditions if two responses arrive simultaneously and are about to update the internal counter at the same time. What is a proper solution in Angular2 and TypeScript for that?

Answer 1

JS是单线程的（或更具体地说，是在单线程事件循环中运行），我认为您不必担心2个响应会同时更新一个变量。

Answer 2

答案很简单：浏览器中运行的JavaScript不能解决这个问题（因为Typescript始终会转换为JavaScript），因为它只有一个线程。