Canceling a http request based on the status of other requests in JavaScript

Question

I have two types of http get requests: 1. /abcdocsearch and 2. /reloadList

The /reloadList response is much slower than /abcdocsearch. I want to cancel the /abcdocsearch request if the /reloadList request called after it is already fulfilled.

How can I do this in Javascript. I am using some private libraries to make these calls.

EDIT

the library internally uses goog.Promise - https://google.github.io/closure-library/api/goog.Promise.html and I can get this promise object.

I tried using goog.Promise.cancel("error") , however, the request did not get canceled and is still fulfilled.

Answer 1

According to the included API doc, there is no static function called cancel on goog.Promise , there is however an instance function on promises' objects, so to cancel a promise, you need to cancel on a promise instance like this

var promise = goog.Promise(/* pass your callbacks here*/);
.
.
.
promise.cancel(/*reason*/);

I highly doubt that if you open the console, you will see an error message like cancel is not defined on goog.Promise