如何与axios同步链接请求？

Question

Suppose I have in my code several places with something like

axios({
  method: 'post',
  url: myurl,
  data: mydata
}).then(...)

I would like the various axios requests to be executed synchronously : the next one must wait for the then callback of the previous one before it is sent to the server.

It seems that what I ask is exactly what promises can offer you (by chaining several then , say). Since Axios is Promise based, I suppose it should somehow be able to do that. But oddly enough, I cannot find this information anywhere.

Note that I do not know in advance all the requests to be sent : there is a first one, then a second one might arrive before the first one finishes, or not, and so on.

ADD ON : Also I think I see how to achieve what I ask by making the Promises myself, sending directly Asynchronous Http Requests. It just seems weird that the library designed for that would not offer this possibility.

Answer 1

Ok, I did not know the following : if the return of the function passed as parameter to a then call returns a Promise, then this promise is resolved before further then calls. Concretely, I think the following achieve what I want :

Once, at the beginning of the script:

let requestSender = Promise.resolve('');

Then whenever I need to send a request :

requestSender.then(prev => 
    axios({method: 'post', url: myurl, data: mydata}).then(...))

that way, each new axios request will wait for the previous one to end before being sent.