Rx.Observable.prototype.forkJoin(...args, [resultSelector])

Runs all observable sequences in parallel and collect their last elements.

参数

1. args: (Arguments | Array) - An array or arguments of Observable sequences or Promises to collect the last elements for.
2. resultSelector: (Function) - The result selector from all the values produced. If not specified, forkJoin will return the results as an array.

返回值

(Observable): An observable sequence with an array collecting the last elements of all the input sequences or the result of the result selector if specified.

例

// Without a selector
var source = Rx.Observable.just(42).forkJoin(
  Rx.Observable.range(0, 3));

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

// => Next: [42, 2]
// => Completed