node.js: emitter.setMaxListeners(n)

emitter.setMaxListeners(n)

By default, EventEmitter allows 10 macimum listeners to an event. You can change this behavior using 'emitter.setMaxListeners(n)' method. The value ‘n’ can be set to Infinity (or 0) to indicate an unlimited number of listeners.

HelloWorld.js

var EventEmitter = require('events').EventEmitter;

var emitter = new EventEmitter();

console.log("Default maximum listeners for all the emitters %d", EventEmitter.defaultMaxListeners);
console.log("Maximum listeners for the emitter %d", emitter.getMaxListeners());

//Setting maximum listeners to 20
emitter.setMaxListeners(20);
console.log("\nSet maximum listeners to 20, using 'setMaxListeners'");
console.log("Maximum listeners for the emitter %d", emitter.getMaxListeners());

Output

Default maximum listeners for all the emitters 10

Maximum listeners for the emitter 10

Set maximum listeners to 20, using 'setMaxListeners'

Maximum listeners for the emitter 20

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