I'm trying to wrap my head around RxJS. While doing some testing, I ran into something that I can't figure out.
Here is the code :
let product = { id: 1, description: 'table' };
const asyncProduct = timer(2000).pipe(() => of(product));
asyncProduct.subscribe(data=>console.log(data))
I expected product to be logged into my console after 2 seconds, however, it logs right away for some reason. What do I misunderstand? Thanks.
to emit after n seconds, you need to use delay operators not timer.
So you need to change your code in this way:
const asyncProduct = of(product).delay(2000)
asyncProduct.subscribe(data => console.log(data))
UPDATE:
You can use timer operator with pipe and then with another operator in it like the following:
timer(2000).pipe(
switchMap(() => of(product))
).subscribe(data => console.log(data))
In this way the value will emot after 2 seconds, achieving your goal. Is another way instead of the first example that I have provided before.
timer could be used as described in my example. I'm just not sure what is wrong with it.