observeon.md

Rx.Observable.prototype.observeOn(scheduler)

Ⓢ

Wraps the source sequence in order to run its observer callbacks on the specified scheduler.

This only invokes observer callbacks on a scheduler. In case the subscription and/or unsubscription actions have side-effects that require to be run on a scheduler, use subscribeOn.

Arguments

1. scheduler (Scheduler): Scheduler to notify observers on.

Returns

(Observable): The source sequence whose observations happen on the specified scheduler.

Example

/* Change from immediate scheduler to timeout */
var source = Rx.Observable.return(42, Rx.Scheduler.immediate)
    .observeOn(Rx.Scheduler.timeout);

var subscription = source.subscribe(
    function (x) {
        console.log('Next: ' + x);
    },
    function (err) {
        console.log('Error: ' + err);
    },
    function () {
        console.log('Completed');
    });

// => Next: 42
// => Completed

Location

File:

• /src/core/linq/observable/observeon.js

Dist:

• rx.all.js
• rx.all.compat.js
• rx.js
• rx.compat.js
• rx.lite.extras.js
• rx.lite.extras.compat.js

Prerequisites:

• None

NPM Packages:

• rx

NuGet Packages:

• RxJS-All
• RxJS-Main
• RxJS-Lite

Unit Tests:

• /tests/observable/observeon.js