fromEvent

signature: fromEvent(target: EventTargetLike, eventName: string, selector: function): Observable

이벤트를 옵저버블로 전환해줍니다.

예시

예시 1: 마우스 클릭을 옵저버블로 전환

( StackBlitz | jsBin | jsFiddle )

// RxJS v6+
import { fromEvent } from 'rxjs';
import { map } from 'rxjs/operators';

// 클릭 이벤트를 내보내는 옵저버블을 생성합니다
const source = fromEvent(document, 'click');
//주어진 이벤트 타임스탬프를 사용하여 문자열에 맵핑합니다
const example = source.pipe(map(event => `Event time: ${event.timeStamp}`));
//결과 (예시): 'Event time: 7276.390000000001'
const subscribe = example.subscribe(val => console.log(val));

관련된 사용법

• Alphabet Invasion Game

• Battleship Game

• Breakout Game

• Car Racing Game

• Catch The Dot Game

• Click Ninja Game

• Flappy Bird Game

• Game Loop

• Horizontal Scroll Indicator

• HTTP Polling

• Lockscreen

• Memory Game

• Mine Sweeper Game

• Platform Jumper Game

• Progress Bar

• [Save Indicator]('../../recipes/save-indicator.md)

• Smart Counter

• Space Invaders Game

• Stop Watch

• Swipe To Refresh

• Tank Battle Game

• Tetris Game

• Type Ahead

• Uncover Image Game

추가 자료

• fromEvent

  :newspaper: - 공식 문서

:file_folder: Source Code: https://github.com/ReactiveX/rxjs/blob/master/src/internal/observable/fromEvent.ts