Rx.Observable.prototype.windowWithTime(timeSpan, [timeShift | scheduler])

Projects each element of an observable sequence into zero or more buffers which are produced based on timing information.
参数
timeSpan(Number): Length of each buffer (specified as an integer denoting milliseconds).[timeShift](Number): Interval between creation of consecutive buffers (specified as an integer denoting milliseconds).[scheduler=Rx.Scheduler.timeout](Scheduler): Scheduler to run buffer timers on. If not specified, the timeout scheduler is used.
返回值
(Observable): An observable sequence of buffers.