Executing a series of asynchronous HTTP calls in Angular until a specific condition is satisfied

Question

Executing a series of asynchronous HTTP calls in Angular until a specific condition is satisfied

In Angular, I am making an HTTP call that returns a promise. Currently, I am refreshing the call using setTimeout at regular intervals. Are there any built-in functions or design patterns available to handle this task more efficiently?

angular typescript promise

Answer 1

Answer №1

Absolutely! Utilizing RXJS is incredibly straightforward. However, it is important to note that using Promises is not necessary when working with RXJS. This is where the true power of RXJS shines through, especially with its robust operators like interval.

interval(1000)
.pipe(
    switchMap(() => this.http.get('...url...')),
    map(response => {
         if(response.statusCode == 1) return response.data;
         else return undefined; //or some error message or data.
    })
)
.subscribe(response => {
  // do something with the response that will come at one-second intervals
});

This code snippet exemplifies how easy it is to work with RXJS. If you provide your own code, we can assist you in transforming it to function precisely as desired using solely rxjs, a potent library founded on the exceptional Observable Design Pattern.

Answer 2

Absolutely! Utilizing RXJS is incredibly straightforward. However, it is important to note that using Promises is not necessary when working with RXJS. This is where the true power of RXJS shines through, especially with its robust operators like interval.

interval(1000)
.pipe(
    switchMap(() => this.http.get('...url...')),
    map(response => {
         if(response.statusCode == 1) return response.data;
         else return undefined; //or some error message or data.
    })
)
.subscribe(response => {
  // do something with the response that will come at one-second intervals
});

This code snippet exemplifies how easy it is to work with RXJS. If you provide your own code, we can assist you in transforming it to function precisely as desired using solely rxjs, a potent library founded on the exceptional Observable Design Pattern.

Executing a series of asynchronous HTTP calls in Angular until a specific condition is satisfied

Answer №1

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