[Javascript] AbortController to cancel the fetch request
阿新 • • 發佈:2018-07-06
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We are able to cancel the fetch request by using AbortController with RxJS Observable.
return Observable.create(observer => { // Create an AbortController to able to cancel the fetch request const controller = new AbortController(); // we need singal to pass to the fetch request const signal = controller.singal;// Pass the singal in fetch options fetch(url, { singal }) .then(response => { return response.json(); }) .then(body => { observer.next(body); observer.complete(); }) .catch(err => { observer.error(err); }); // When comsumer call sub.unsubscribe(), it will call abort()// to cancel the request. return () => controller.abort(); });
[Javascript] AbortController to cancel the fetch request