finally.md

Rx.Observable.prototype.finally(action)

Ⓢ

Invokes a specified action after the source observable sequence terminates gracefully or exceptionally. There is an alias called finallyAction for browsers <IE9

Arguments

1. predicate (Function): A function to test each source element for a condition; The callback is called with the following information:
   1. the value of the element
   2. the index of the element
   3. the Observable object being subscribed
2. [thisArg] (Any): Object to use as this when executing the predicate.

Returns

(Observable): An observable sequence that contains elements from the input sequence that satisfy the condition.

Example

/* Terminated by error still fires function */
var source = Rx.Observable.throw(new Error())
  .finally(function () { console.log('Finally'); });

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

// => Error: Error
// => Finally

Location

File:

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

Dist:

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

NPM Packages:

• rx

NuGet Packages:

• RxJS-All
• RxJS-Main
• RxJS-Lite

Unit Tests:

• /tests/observable/finally.js