request ???? ????? ???? (??? ?? ? ????). ? ?, ??? ??? ??? ???? ???? ?? ? ? ????. ???? "? ? ?"? ?????. ??? ?? ?????. ???
const events = require('events');
const eventEmitter = new events.EventEmitter();
const ringBell = () => {
console.log('ring ring ring');
};
eventEmitter.on('doorOpen', ringBell);
eventEmitter.emit('doorOpen'); ???? ?? ??? ?????. ? ?? ?? ??? ??? ???? ? ?? ?? ??? ?? ? ?????. ??? ??? ??? ??? ??????. ??? ??? ???? ?? ? ? ?? ??? ?????.
events
EventEmitter
ringBell ????? ?? ??? ???????. ??? ?? ????? Node.js ??????? ???? ??? eventEmitter.on() ????? ???? ????. ???? ?? ? ?????? ???? ????? ?? ? ? ????. ? ??? ?????? :
<code>ringBell
emit() ???? ???? on? ??? ???? ?????. ?? ?? ???? ???? "??"???? ?????. ? ?? ?? : <pre class='brush:php;toolbar:false;'>const events = require('events');
const eventEmitter = new events.EventEmitter();
const ringBell = () => {
console.log('ring ring ring');
};
eventEmitter.on('doorOpen', ringBell);
eventEmitter.emit('doorOpen');</pre>
<p> ?? ??? <code>EventEmitter ??? ??????. ?? ?? Door? ????. ?? ?? ??? frontDoor? ???????. ?? ?? ??? ???? ???? ??? ?? ?? ??? ???? ?????. ?? ??? ?? Door ??? ? ? ??? ????. ?? ???? ?????! ?????, events ??? ???? ?? ? ?? ??? ???? ???? ??? ???? ???? ??? ?????. events
eventEmitter.on('doorOpen', ringBell);
eventEmitter.on('doorOpen', doSomething);
eventEmitter.on('doorOpen', doSomethingElse);
eventEmitter.emit('doorOpen'); ??? ?????? ?? ? ? ????. ?? ??? ?? ??? ??? ???? ???? ?? ???? ?????. ??? ????, ??? ??? ?? ?? ? ? ???? :
listeners
eventEmitter.on('doorOpen', (ring) => {
console.log(ring);
});
eventEmitter.emit('doorOpen', 'ringeling');
???? ?? ?? ??? ?????? node.js? ?? ?????. ??? ?? ???? ???? ??????
const events = require('events');
function Door(colour) {
this.colour = colour;
events.EventEmitter.call(this);
this.open = () => {
this.emit('open');
};
}
Door.prototype.__proto__ = events.EventEmitter.prototype;
const frontDoor = new Door('brown');
frontDoor.on('open', () => {
console.log('ring ring ring');
});
frontDoor.open(); ???? ??? ???? ?? ?? ??? ???? ???? ?????. ???? ??? ?? ???? ??, ???? ?? ? ?? ??? ????????.
??? ???????. ?? ?? ???? ???? ? ????? ?? ? ????. ??? ?? ??? ????.
EventEmitter
events ???? ??? ? ????. ? ???? ???? ??? ??? ???? ?? ?? ??? ??? ????? ??? ? ????. ?? ??? ????. EventEmitter
EventEmitter
??? ??? 'on'? 'one leain'??? ???? ??????
???? ???? ???? ?? ? ??? ?? ? ?? ??? ?? ? ? ????. ???
?? ??? ???? ?? ? ? ??????. ? ? ??? node.js ??? ? ??? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!EventEmitter ???? ???? ???? ???? ?? ? ?? ???? ?? ??? ?? ? ? ????. events
new
??? ???? ????? ????? Door.prototype.__proto__ = events.EventEmitter.prototype; ?? ???? ??? ? ????. ? ???? ???? ?? ???? ??? ??? ?? ??? ??? ? ????. ?? ??? ????.
const events = require('events');
const eventEmitter = new events.EventEmitter();
const ringBell = () => {
console.log('ring ring ring');
};
eventEmitter.on('doorOpen', ringBell);
eventEmitter.emit('doorOpen');
???? ???? ???? ?? ??? ?? ?? ? ? ????. ? ??? ???? ???? ?? ? ??? ?? ?? ??? ?? ??? ? ????. EventEmitter
setMaxListeners ?????
EventEmitter ???? ?? ???? ??? ???? ?? listenerCount ???? ???? ??? ???? ?? ??? ???? Node.js ????? ?????.
? node.js ???? ?? ?? ? ?? ????? ????? ?? ??? ???? ??? ????. ???? node.js ???? ??? ? ???? ????? ???? ??? ??? ?? ????? ??? ? ????.
? AI ??
Undress AI Tool
??? ???? ??
Undresser.AI Undress
???? ?? ??? ??? ?? AI ?? ?
AI Clothes Remover
???? ?? ???? ??? AI ?????.
Clothoff.io
AI ? ???
Video Face Swap
??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!
?? ??
??? ??
???++7.3.1
???? ?? ?? ?? ???
SublimeText3 ??? ??
??? ??, ???? ?? ????.
???? 13.0.1 ???
??? PHP ?? ?? ??
???? CS6
??? ? ?? ??
SublimeText3 Mac ??
? ??? ?? ?? ?????(SublimeText3)
??? ??
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