This is RxJS v 4. Find the latest version here

Rx.Observable.prototype.doWhile(condition)

Ⓢ

Repeats source as long as condition holds emulating a do while loop.

Arguments

1. condition (Function): The condition which determines if the source will be repeated.

Returns

(Observable): An observable sequence whose observers trigger an invocation of the given observable factory function.

Example

var i = 0;

var source = Rx.Observable.return(42).doWhile(function (x) { return ++i < 2; });

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

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

Location

File:

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

Dist:

• rx.all.js
• rx.all.compat.js
• rx.experimental.js

Prerequisites:

• rx.js | rx.compat.js | rx.lite.js | rx.lite.compat.js

NPM Packages:

• rx

NuGet Packages:

• RxJS-All
• RxJS-Experimental

Unit Tests:

• /tests/observable/dowhile.js