An event emitter is a platform for triggering and listening for events.
An event emitter is a platform for triggering and listening for events. Different libraries offer different implementations and for different purposes.
Questions tagged [eventemitter]
960 questions
-1
votes
2 answers
Cannot use child input value in parent's [ngClass] logic
I am attempting to pass the user input value from my input through to the parent and use this value to determine which row to highlight within my
physicsboy
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votes
2 answers
How to emit router event
I have 2 modules, one is sidenav, where I can select the menu and want to show component in content module where have router-outlet. I want to know what is the best way to do that? Have some router event where I can just subscribe in content module?…
Chiien
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votes
3 answers
Angular - emitted event doesn't get through to parent component
I'm trying to emit an event from a child component to a parent component.
Here is part of the parent file TS file:
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-car-detail',
templateUrl:…
Matt
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votes
1 answer
Not able to bind click event in @Directive in angular4
I have a simple Directive like this
import { Directive, HostListener, EventEmitter, Output } from '@angular/core';
@Directive({
selector: '[appAppClick]'
})
export class AppClickDirective {
@Output() clickDirective: EventEmitter = new…
Lijin Durairaj
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votes
1 answer
Accessing an object's parent (or instance?) given a sub-object
I have an object variable a, which has an array associated with it, b. I am passing b to a function and need to check properties in a, the object it's associated with.
How can I do this? Can I somehow use an event emitter?
function ObjectB…
timdirusso
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votes
2 answers
Event doesn't bubble to parent component
I have the following project structure:
todo-form fires created event and I want to handle this event in todos component
todo-form.component.html:
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votes
1 answer
warning: possible EventEmitter memory leak detected. 11 AppUp > listeners added. Use emitter.setMaxListeners() to increase limit
I'm using the following event emitter (and I need this functionality).
My question is how to avoid the error.
It seems that I'm using event inside another event.
warning: possible EventEmitter memory leak detected. 11 AppUp
listeners added. Use…
07_05_GuyT
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votes
1 answer
Event emitter doesn't emit events
I've module like following which I want to emit event like this:
file aa.js
var EventEmitter = require("events").EventEmitter,
eventEmitterIns = new EventEmitter();
var preProcess = function (cb) {
...
var start = function () {
…
07_05_GuyT
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-1
votes
1 answer
Events in Node.js
First example from https://nodejs.org/dist/latest-v5.x/docs/api/child_process.html is as follows:
const spawn = require('child_process').spawn;
const ls = spawn('ls', ['-lh', '/usr']);
ls.stdout.on('data', (data) => {
console.log(`stdout:…
mrs
- 11
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votes
1 answer
How handle multiple objects with EventEmitter - NodeJS
Main File
var DogModule = require('Dog');
var dogsList = [];
function addNewDog(){
var newDog = new Dog();
dogsList.push(newDog);
}
???.on('bark', function(barkSound) {
console.log(barkSound);
});
Dog File
var EventEmitter =…
Xplouder
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votes
2 answers
Publisher / Subscriber model in ReactJS
Does ReactJS have a publisher / subscriber model similar to EventEmitter in node?
Olshansky
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votes
1 answer
How to persist EventEmitter object in node application?
I am connecting external websockets in my application. In those sockets I am firing EventEmitters. But, when I make update to my application all living Events dying. I want them to be alive as long as I remove them. I tried redis pub/sub, result is…
beratuslu
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votes
1 answer
Process multiple POST requests with emitters/listeners
Code:
app.post('/new', urlencodedParser, function (req, res) {
if (!req.body) return res.sendStatus(400);
emitter.on('response', function (output) {
res.status(200).json({ip: `${output}`, id: `${random_id}`});
});
});
Problem:
The…
Darwesh Singh
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votes
1 answer
Nodejs EventEmitter & load balancing
I heard someone says
'EventEmitter becomes an issue the moment you decide to load balance. I haven’t used it in 4 or 5 years because I’m always clustering my Node apps'
Is there a relationship between 'EventEmitter' and 'load balance'?
Is it true?
user2655470
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votes
1 answer
Sending data between components in Angular4
Is there any alternative for @Input() and @Output() for sending data between components in angular?
Rishi RD
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