filter
RxJS 5 filter
HTML
<script src="https://npmcdn.com/@reactivex/[email protected]/dist/global/Rx.umd.js"></script>JavaScript
//emit (1,2,3,4,5)
const source = Rx.Observable.from([1,2,3,4,5]);
//filter out non-even numbers
const example = source.filter(num => num % 2 === 0);
//output: "Even number: 2", "Even number: 4"
const subscribe = example.subscribe(val => console.log(`Even number: ${val}`));