Rx.Observable.prototype.merge(maxConcurrent | other)

Merges an observable sequence of observable sequences into an observable sequence, limiting the number of concurrent subscriptions to inner sequences. Or merges two observable sequences into a single observable sequence.
参数
maxConcurrent(Function): Maximum number of inner observable sequences being subscribed to concurrently.other(Observable): The second observable sequence to merge into the first.
返回值
(Observable): The observable sequence that merges the elements of the inner sequences.