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Angular: Cancel a pending HTTP request

In case you are wondering how to cancel a pending HTTP request, here is the (simple) answer.  You can do this by calling unsubscribe on the Subscription object returned by the  subscribe method.

An example:

let subscription = this.http.get(url)
.map(res => res.json())
.subscribe(data => this.data = data);
// this call will cancel the http request
subscription.unsubscribe();
view raw unsubscribe.ts hosted with ❤ by GitHub 
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