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Cancel a Request
Cancelling an HTTP request is a common requirement. For example, you could have a queue of requests where a new request supersedes a pending request and that pending request needs to be cancelled.
To cancel a request we call the
unsubscribe function of its subscription.1
@Component({ /* ... */ })
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export class AppComponent {
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/* ... */
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search() {
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const request = this.searchService.search(this.searchField.value)
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.subscribe(
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result => { this.result = result.artists.items; },
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err => { this.errorMessage = err.message; },
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() => { console.log('Completed'); }
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);
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request.unsubscribe();
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}
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}
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