Rx.Observable.prototype.filter(predicate, [thisArg])
Rx.Observable.prototype.where(predicate, [thisArg])
Filters the elements of an observable sequence based on a predicate.
Arguments
predicate
(Function
): A function to test each source element for a condition. The callback is called with the following information:- the value of the element
- the index of the element
- the Observable object being subscribed
[thisArg]
(Any
): Object to use asthis
when executing the predicate.
Returns
(Observable
): An observable sequence that contains elements from the input sequence that satisfy the condition.
Example
var source = Rx.Observable.range(0, 5)
.filter(function (x, idx, obs) {
return x % 2 === 0;
});
var subscription = source.subscribe(
function (x) {
console.log('Next: %s', x);
},
function (err) {
console.log('Error: %s', err);
},
function () {
console.log('Completed');
});
// => Next: 0
// => Next: 2
// => Next: 4
// => Completed
Location
File:
Dist:
Prerequisites:
- None
NPM Packages:
NuGet Packages:
Unit Tests: