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June 22, 2017 16:21
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Simple incrementer/decrementer with rxjs
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <title>RxJS Test</title> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/rxjs/5.4.1/Rx.js"></script> | |
| <script src="https://code.jquery.com/jquery-3.2.1.js" integrity="sha256-DZAnKJ/6XZ9si04Hgrsxu/8s717jcIzLy3oi35EouyE=" crossorigin="anonymous"></script> | |
| </head> | |
| <body> | |
| <h1>RxJS Button Increment/Decrement Example :)</h1> | |
| <button id="inc">+</button> | |
| <span> | |
| <p id="view">0</p> | |
| </span> | |
| <button id="dec">-</button> | |
| <script defer> | |
| var counter = 0; | |
| var inc$ = Rx.Observable.fromEvent($('#inc'), 'click').scan(x => counter + 1, 0).do(x => counter = x).subscribe(x => $('#view')[0].innerText = x); | |
| var dec$ = Rx.Observable.fromEvent($('#dec'), 'click').scan(x => counter - 1, 0).do(x => counter = x).subscribe(x => $('#view')[0].innerText = x); | |
| </script> | |
| </body> | |
| </html> |
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