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index.ts
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index.ts
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import './style.css';
import { of, Observable, fromEvent, count } from 'rxjs';
import { map } from 'rxjs/operators';
// Imperavive vs declarative
/*
function addToCounter() {
const counter = document.getElementById('counter');
const sum = parseInt(counter.innerHTML) + 1;
counter.innerHTML = sum.toString();
}
function load() {
const box = document.getElementById('example');
console.log('asad');
box.addEventListener('click', addToCounter, false);
}
load();
*/
const box = document.getElementById('example');
fromEvent(box, 'click')
.pipe(map(() => 1))
.subscribe((x) => console.log(x));
/*
// Hot vs Cold observables
const observable = Observable.create((observer) => {
const random = Math.random()
observer.next(random);
});
// subscription 1
observable.subscribe((data) => {
console.log(data);
});
// subscription 2
observable.subscribe((data) => {
console.log(data);
});
*/