Rx.Observable.while(condition, source)

Repeats source as long as condition holds emulating a while loop. There is an alias for this method called 'whileDo' for browsers <IE9.


  1. condition (Function): The condition which determines if the source will be repeated.
  2. source (Observable): The observable sequence that will be run if the condition function returns true.


(Observable): An observable sequence which is repeated as long as the condition holds.