Subscribe can take three params:
subscribe(
(x)=> console.log(x),
err=> console.log(err),
()=> console.log('complete')
);
If we want to stop the progame at some condition, so we need to notify complete function, which is the third param in subscribe.
Observable.combineLatest(
timer$,
input$,
(timer, input)=> ({count: timer.count, text: input})
)
.takeWhile((data)=> data.count <= )
.filter((data)=> data.count === parseInt(data.text))
.subscribe(
(x)=> console.log(x),
err=> console.log(err),
()=> console.log('complete')
);
We can use takeWhile() function to end the program, so after the count = 3, "complete" will logout