Node. js publishing and subscription mode and node. js subscription Mode

Node. js publishing and subscription mode and node. js subscription Mode

// Import the built-in module let EventEmitter = require ('events'); let util = require ('util'); // Man inherits EventEmitterutil. inherits (Man, EventEmitter); // create a function Man () {}// instantiate the function let man = new Man (); function findGirl () {console. log ('Find a new girlfriend ')} function saveMoney () {console. log ('economical ')} man. on ('loan', findGirl) // loose, bind a Function Method man. on ('loan', saveMoney) // loose, bind a Function Method man. removeListener ('looping', findGirl); // remove save man. emit ('loan ');