Tipe Event

Ada yang dinamakan UserEvent dan SystemEvent.

User Event

button.addEventListener('click', ()=> {
    alert('I am clicked')
})

System Event

setTimeout(() => {
    alert('Waktu habis')
}, 1000)

httpRequest.onreadystatechange = () => {
    switch (httpRequest.readyState) {
        console.log('Finished')
        break
    }
}

NodeJS juga memiliki SystemEvent, yaitu

• Data Events
• Completion Events
• Error Events