How can you remove an event listener from an element?
A). element.removeEventListener('click', handler)
B). element.detachEvent('click', handler)
C). element.off('click', handler)
D). element.remove('click', handler)
What is the correct syntax to prevent the default event action?
A). event.preventDefault()
B). event.stopPropagation()
C). event.prevent()
D). event.stopDefault()
How do you bind an event handler to an element so it is called once and then removed?
A). element.addEventListenerOnce('click', handler)
B). element.once('click', handler)
C). element.addEventListener('click', handler, { once: true })
D). element.on('clickOnce', handler)
What is the purpose of the 'change' event?
A). It is triggered when an element's value changes
B). It is triggered when an element is clicked
C). It is triggered when the mouse moves over an element
D). It is triggered when the DOM is changed
Which event is fired when the mouse pointer is moved onto an element?
A). mouseenter
B). mouseleave
C). mouseover
D). mousemove
How can you get the element that triggered the event?
A). event.target
B). event.srcElement
C). event.element
D). event.currentElement
How do you add an event listener to an element in JavaScript?
A). element.addEventListener('click', handler)
B). element.attachEvent('click', handler)
C). element.on('click', handler)
D). element.listen('click', handler)
How do you stop event propagation?
A). event.preventDefault()
B). event.stopPropagation()
C). event.cancelBubble()
D). event.stop()
Which event is triggered when a user presses a key?
A). keypress
B). keyup
C). keydown
D). keyhit
Which event is fired when the page has finished loading?
A). unload
B). load
C). ready
D). DOMContentLoaded