Rx.Observable.prototype.join(right, leftDurationSelector, rightDurationSelector, resultSelector)

Correlates the elements of two sequences based on overlapping durations.

参数

1. right (Observable): The right observable sequence to join elements for.
2. leftDurationSelector (Function): A function to select the duration (expressed as an observable sequence) of each element of the left observable sequence, used to determine overlap.
3. rightDurationSelector (Function): A function to select the duration (expressed as an observable sequence) of each element of the right observable sequence, used to determine overlap.
4. resultSelector (Any): A function invoked to compute a result element for any two overlapping elements of the left and right observable sequences. The parameters are as follows:
   1. (Any) Element from the left source for which the overlap occurs.
   2. (Any) Element from the right source for which the overlap occurs.

返回值

(Observable): An observable sequence that contains result elements computed from source elements that have an overlapping duration.

例