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event driven architecture javascript

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Martin Binczak answered on October 10, 2022 Popularity 10/10 Helpfulness 2/10

answer event driven architecture javascript

related events event driven architecture in node js

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event driven architecture javascript

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(() => {
  'use strict';

  class EventEmitter {
    constructor() {
      this.events = new Map();
    }

    on(event, listener) {
      if (typeof listener !== 'function') {
        throw new TypeError('The listener must be a function');
      }
      let listeners = this.events.get(event);
      if (!listeners) {
        listeners = new Set();
        this.events.set(event, listeners); 
      }
      listeners.add(listener);
      return this;
    }

    off(event, listener) {
      if (!arguments.length) {
        this.events.clear();
      } else if (arguments.length === 1) {
        this.events.delete(event);
      } else {
        const listeners = this.events.get(event);
        if (listeners) {
          listeners.delete(listener);
        }
      }
      return this;
    }

    emit(event, ...args) {
      const listeners = this.events.get(event);
      if (listeners) {
        for (let listener of listeners) {
          listener.apply(this, args);
        }
      }
      return this;
    }
  }

  this.EventEmitter = EventEmitter;
})();

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: en.wikipedia.org

Tags: architecture event-driven javascript

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Contributed on May 18 2023

Martin Binczak

0 Answers Avg Quality 2/10

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events event driven architecture in node js

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In node there are certain objects called event emitter that emit name event that
fire when somethings important happends.It is pick by event listener and attached
to callback function set by devleopers.

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: Grepper

Tags: architecture architectu

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Contributed on Oct 10 2022

Shirshak Kandel

0 Answers Avg Quality 2/10

event driven architecture

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Mediator

Broker

  
public class ApnaChatRoomImpl implements ApnaChatRoom{  
    //get current date time   
    DateFormat dateFormat = new SimpleDateFormat("E dd-MM-yyyy hh:mm a");  
    Date date = new Date();  
    @Override  
    public void showMsg(String msg, Participant p) {  
          
        System.out.println(p.getName()+"'gets message: "+msg);  
        System.out.println("\t\t\t\t"+"["+dateFormat.format(date).toString()+"]");    
    }     
}

https://hevodata.com/learn/kafka-event-driven-architecture/

Popularity 10/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: architecture architectu

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Contributed on Jan 20 2023

Anjali Sharma

0 Answers Avg Quality 2/10

event driven architecture javascript

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