This is RxJS v 4. Find the latest version here

Rx.Observable.catch(...args)

Ⓢ

Continues an observable sequence that is terminated by an exception with the next observable sequence.

Arguments

1. args (Array | arguments): Observable sequences to catch exceptions for.

Returns

(Observable): An observable sequence containing elements from consecutive source sequences until a source sequence terminates successfully.

Example

var obs1 = Rx.Observable.throw(new Error('error'));
var obs2 = Rx.Observable.return(42);

var source = Rx.Observable.catch(obs1, obs2);

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

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

Location

File:

• /src/core/linq/observable/catch.js

Dist:

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

Prerequisites:

• None

NPM Packages:

• rx

NuGet Packages:

• RxJS-Complete
• RxJS-Main
• RxJS-Lite

Unit Tests:

• /tests/observable/catch.js