How do you add an event listener to an element in JavaScript?

What event is fired when an element's value is changed and then loses focus?

A). blur

B). change

C). focusout

D). input

What is the correct way to attach a load event to the window object?

A). window.onload = function() {}

B). window.addEventListener('load', function() {})

C). window.attachEvent('onload', function() {})

D). window.listen('load', function() {})

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)

How can you get the element that triggered the event?

A). event.target

B). event.srcElement

C). event.element

D). event.currentElement

What event occurs when an element loses focus?

A). blur

B). focus

C). focusout

D). unfocus

Which event is triggered when a user presses a key?

A). keypress

B). keyup

C). keydown

D). keyhit

Which event is triggered when a user clicks on an HTML element?

A). click

B). mouseclick

C). mousedown

D). mouseup

Which event is fired when the form is submitted?

A). submit

B). send

C). post

D). formsubmit

Which event is fired when a user double-clicks on an HTML element?

A). click

B). dblclick

C). doubleclick

D). clicktwo

How do you stop event propagation?

A). event.preventDefault()

B). event.stopPropagation()

C). event.cancelBubble()

D). event.stop()