[英]Chaining asynchronous methods in JavaScript
I'd like to do something like this: 我想做这样的事情:
var res = myAjax.post();
myAjax is basically my own ajax wrapper (asynchroneous). myAjax基本上是我自己的ajax包装器(异步)。 I don't necessary need the chaining, but i'd like to be able to do the call like shown above.
我不需要链接,但是我希望能够进行如上所示的呼叫。 I'd like a callback to be handled by the object itself.
我希望对象本身可以处理回调。 I've read about asynchroneous method queues, but, honestly, couldn't fully understand it.
我已经读过异步方法队列,但是,老实说,我不能完全理解它。 I know i could use a synchroneous ajax call, but it should be possible to do it asynchroneously as well if i understand it correctly.
我知道我可以使用同步ajax调用,但是如果我正确理解的话,也应该可以异步进行。 Any help is very appreciated.
任何帮助都非常感谢。 Thank you.
谢谢。
I've done a demo here that might be something along the lines of what you mean... 我在这里做了一个演示,可能与您的意思类似...
In that demo, there are two types of objects: MyAjax
which has the 'post' method as above, and a MyRes
object with a getData
method that will return null
until the async call has successfully completed. 在该演示中,有两种类型的对象:
MyAjax
其具有与上述“后”的方法,和MyRes
与对象getData
方法会返回null
,直至异步调用已成功完成。 After it has completed, it will return the data fetched from the ajax call. 完成后,它将返回从ajax调用获取的数据。
In the demo, I have a function checking for the response every second, but the post
method also handles a callback which allows you to be notified when the ajax call has completed successfully. 在演示中,我有一个函数每秒检查一次响应,但是
post
方法还处理一个回调,该回调使ajax调用成功完成时可以得到通知。
I don't know why you'd want to do it this way, but it is doable. 我不知道您为什么要这样做,但这是可行的。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.