from - 4
RxJS 5 from
HTML
<script src="https://npmcdn.com/@reactivex/[email protected]/dist/global/Rx.umd.js"></script>
JavaScript
//emit string as a sequence
const source = Rx.Observable.from('Hello World');
//output: 'H','e','l','l','o',' ','W','o','r','l','d'
const subscribe = source.subscribe(val => console.log(val));