Created
March 1, 2018 14:52
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JS Bin // source https://jsbin.com/viseyon
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width"> | |
| <title>JS Bin</title> | |
| </head> | |
| <body> | |
| <input/> | |
| <script id="jsbin-javascript"> | |
| function Observable (subscribe) { | |
| this._subscribe = subscribe; | |
| } | |
| Observable.prototype.subscribe = function (observer) { | |
| return this._subscribe(observer); | |
| } | |
| Observable.prototype.map = function (projection) { | |
| var self = this; | |
| return new Observable(observer => { | |
| var subscription = self.subscribe({ | |
| next(v) { | |
| observer.next(projection(v)); | |
| } | |
| }); | |
| }); | |
| } | |
| Observable.fromEvent = function (dom, eventName) { | |
| return new Observable(observer => { | |
| var handler = e => observer.next(e); | |
| dom.addEventListener(eventName, handler); | |
| return { | |
| unsubscribe () { | |
| dom.removeEventListener(eventName, handler); | |
| } | |
| } | |
| }) | |
| } | |
| //or with es6 class | |
| /* | |
| class Observable { | |
| constructor(subscribe){ | |
| this._subscribe = subscribe; | |
| } | |
| subscribe (observer) { | |
| return this._subscribe(observer); | |
| } | |
| map(projection) { | |
| const self = this; | |
| return new Observable(observer => { | |
| const subscription = self.subscribe({ | |
| next(v) { | |
| observer.next(projection(v)); | |
| } | |
| }); | |
| }); | |
| } | |
| static fromEvent(dom, eventName) { | |
| return new Observable(observer => { | |
| const handler = e => observer.next(e); | |
| dom.addEventListener(eventName, handler); | |
| return { | |
| unsubscribe () { | |
| dom.removeEventListener(eventName, handler); | |
| } | |
| } | |
| }) | |
| } | |
| } | |
| */ | |
| const input = document.body.querySelector('input'); | |
| var inputStream = Observable.fromEvent(input, 'keyup'); | |
| inputStream | |
| .map(e=>e.target.value) | |
| .subscribe({ | |
| next: (v) => console.log(v) | |
| }); | |
| </script> | |
| <script id="jsbin-source-javascript" type="text/javascript">function Observable (subscribe) { | |
| this._subscribe = subscribe; | |
| } | |
| Observable.prototype.subscribe = function (observer) { | |
| return this._subscribe(observer); | |
| } | |
| Observable.prototype.map = function (projection) { | |
| var self = this; | |
| return new Observable(observer => { | |
| var subscription = self.subscribe({ | |
| next(v) { | |
| observer.next(projection(v)); | |
| } | |
| }); | |
| }); | |
| } | |
| Observable.fromEvent = function (dom, eventName) { | |
| return new Observable(observer => { | |
| var handler = e => observer.next(e); | |
| dom.addEventListener(eventName, handler); | |
| return { | |
| unsubscribe () { | |
| dom.removeEventListener(eventName, handler); | |
| } | |
| } | |
| }) | |
| } | |
| //or with es6 class | |
| /* | |
| class Observable { | |
| constructor(subscribe){ | |
| this._subscribe = subscribe; | |
| } | |
| subscribe (observer) { | |
| return this._subscribe(observer); | |
| } | |
| map(projection) { | |
| const self = this; | |
| return new Observable(observer => { | |
| const subscription = self.subscribe({ | |
| next(v) { | |
| observer.next(projection(v)); | |
| } | |
| }); | |
| }); | |
| } | |
| static fromEvent(dom, eventName) { | |
| return new Observable(observer => { | |
| const handler = e => observer.next(e); | |
| dom.addEventListener(eventName, handler); | |
| return { | |
| unsubscribe () { | |
| dom.removeEventListener(eventName, handler); | |
| } | |
| } | |
| }) | |
| } | |
| } | |
| */ | |
| const input = document.body.querySelector('input'); | |
| var inputStream = Observable.fromEvent(input, 'keyup'); | |
| inputStream | |
| .map(e=>e.target.value) | |
| .subscribe({ | |
| next: (v) => console.log(v) | |
| }); | |
| </script></body> | |
| </html> |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| function Observable (subscribe) { | |
| this._subscribe = subscribe; | |
| } | |
| Observable.prototype.subscribe = function (observer) { | |
| return this._subscribe(observer); | |
| } | |
| Observable.prototype.map = function (projection) { | |
| var self = this; | |
| return new Observable(observer => { | |
| var subscription = self.subscribe({ | |
| next(v) { | |
| observer.next(projection(v)); | |
| } | |
| }); | |
| }); | |
| } | |
| Observable.fromEvent = function (dom, eventName) { | |
| return new Observable(observer => { | |
| var handler = e => observer.next(e); | |
| dom.addEventListener(eventName, handler); | |
| return { | |
| unsubscribe () { | |
| dom.removeEventListener(eventName, handler); | |
| } | |
| } | |
| }) | |
| } | |
| //or with es6 class | |
| /* | |
| class Observable { | |
| constructor(subscribe){ | |
| this._subscribe = subscribe; | |
| } | |
| subscribe (observer) { | |
| return this._subscribe(observer); | |
| } | |
| map(projection) { | |
| const self = this; | |
| return new Observable(observer => { | |
| const subscription = self.subscribe({ | |
| next(v) { | |
| observer.next(projection(v)); | |
| } | |
| }); | |
| }); | |
| } | |
| static fromEvent(dom, eventName) { | |
| return new Observable(observer => { | |
| const handler = e => observer.next(e); | |
| dom.addEventListener(eventName, handler); | |
| return { | |
| unsubscribe () { | |
| dom.removeEventListener(eventName, handler); | |
| } | |
| } | |
| }) | |
| } | |
| } | |
| */ | |
| const input = document.body.querySelector('input'); | |
| var inputStream = Observable.fromEvent(input, 'keyup'); | |
| inputStream | |
| .map(e=>e.target.value) | |
| .subscribe({ | |
| next: (v) => console.log(v) | |
| }); |
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