mergeMap
RxJS 5 mergeMap
HTML
<script src="https://npmcdn.com/@reactivex/[email protected]/dist/global/Rx.umd.js"></script>JavaScript
//emit 'Hello'
const source = Rx.Observable.of('Hello');
//map to inner observable and flatten
const example = source.mergeMap(val => Rx.Observable.of(`${val} World!`));
//output: 'Hello World!'
const subscribe = example.subscribe(val => console.log(val));