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liamkeily/JS class listener methods

Last active November 6, 2019 17:38
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JS class listener methods
class DataObject {
attach(listener) {
this.listeners.push(listener);
}
detach(removeListener) {
this.listeners = this.listeners.filter(listener => listener !== removeListener);
}
emit() {
this.listeners.forEach(listener => listener());
}
}
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