Code Typing · JavaScript
Event Emitter
Minimal pub/sub in 15 lines.
Difficulty: Advanced · 16 Lines · License: public-domain
class EventEmitter {
constructor() {
this.handlers = {};
}
on(event, fn) {
(this.handlers[event] ||= []).push(fn);
}
emit(event, ...args) {
for (const fn of this.handlers[event] || []) {
Time0:00
Speed (WPM)0.0
Accuracy100.0%
Mistakes0
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