1. Operators
  2. Utility
  3. TimeInterval

TimeInterval

convert an Observable that emits items into one that emits indications of the amount of time elapsed between those emissions

TimeInterval

The TimeInterval operator intercepts the items from the source Observable and emits in their place objects that indicate the amount of time that elapsed between pairs of emissions.

See Also

Language-Specific Information:

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timeInterval

The timeInterval operator converts a source Observable into an Observable that emits indications of the amount of time lapsed between consecutive emissions of the source Observable. The first emission from this new Observable indicates the amount of time lapsed between the time when the observer subscribed to the Observable and the time when the source Observable emitted its first item. There is no corresponding emission marking the amount of time lapsed between the last emission of the source Observable and the subsequent call to onCompleted.

timeInterval by default operates on the immediate Scheduler, but also has a variant that allows you to specify the Scheduler by passing it in as a parameter.

timeInterval

The timeInterval operator converts a source Observable into an Observable that emits indications of the amount of time lapsed between consecutive emissions of the source Observable. The first emission from this new Observable indicates the amount of time lapsed between the time when the observer subscribed to the Observable and the time when the source Observable emitted its first item. There is no corresponding emission marking the amount of time lapsed between the last emission of the source Observable and the subsequent call to onCompleted.

timeInterval by default operates on the immediate Scheduler, but also has a variant that allows you to specify the Scheduler by passing it in as a parameter.

timeInterval

The timeInterval operator converts a source Observable into an Observable that emits indications of the amount of time lapsed between consecutive emissions of the source Observable. The first emission from this new Observable indicates the amount of time lapsed between the time when the observer subscribed to the Observable and the time when the source Observable emitted its first item. There is no corresponding emission marking the amount of time lapsed between the last emission of the source Observable and the subsequent call to onCompleted.

Sample Code

var source = Rx.Observable.timer(0, 1000)
    .timeInterval()
    .map(function (x) { return x.value + ':' + x.interval; })
    .take(5);

var subscription = source.subscribe(
    function (x) { console.log('Next: ' + x); },
    function (err) { console.log('Error: ' + err); },
    function () { console.log('Completed'); });
Next: 0:0
Next: 1:1000
Next: 2:1000
Next: 3:1000
Next: 4:1000
Completed

timeInterval by default operates on the timeout Scheduler, but also has a variant that allows you to specify the Scheduler by passing it in as a parameter.

timeInterval is found in each of the following distributions:

  • rx.all.js
  • rx.all.compat.js
  • rx.time.js (requires rx.js or rx.compat.js)
  • rx.lite.js
  • rx.lite.compat.js

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