AJAX请求同步VS异步 [英] AJAX requests Synchronous Vs Asynchronous

问题描述

有一个同步的请求，并与异步请求的性能之间有什么区别（速度明智）？

Is there any difference in performance ( speed wise ) between a synchronous request and and asynchronous request?

什么都是理由使用异步请求??

What all are the reasons for using an asynchronous request??

推荐答案

您应该多为始终使用异步AJAX请求，其实我知道，只有一个地方，一个同步的Ajax请求应使用的是如果你在一个Ajax请求嵌入在客户端上一个新的JavaScript文件，然后从JavaScript的从原来的Ajax请求返回引用的文件类型和/或对象。那么这个新的JS文件的抓取应该（或可以三立）通过使用同步的Ajax请求包括...

You should mostly always use an asynchronous Ajax Request, in fact I know only about one place where a synchronous Ajax Request should be used which is if you're in an Ajax Request embedding a new JavaScript file on the client and then referencing types and/or objects from that JavaScript file in the return from the original Ajax Request. Then the fetching of this new JS file should (or can sanely) be included through using a synchronous Ajax Request...

其他然后，你应该的总是的使用异步Ajax请求。最重要的原因是同步的Ajax请求，使用户界面（浏览器）无响应...

Other then that you should always use asynchronous Ajax Requests. The most important reason is that a synchronous Ajax Request makes the UI (browser) unresponsive...

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