Rx.Observable.prototype.filter(predicate, [thisArg])


Filters the elements of an observable sequence based on a predicate. This is an alias for the where method.


  1. predicate (Function): A function to test each source element for a condition. The callback is called with the following information:
    1. the value of the element
    2. the index of the element
    3. the Observable object being subscribed
  2. [thisArg] (Any): Object to use as this when executing the predicate.


(Observable): An observable sequence that contains elements from the input sequence that satisfy the condition.