HTML DOM events allow JavaScript to register different event handlers on
elements in an HTML document.
Events are normally used in combination with functions, and the function will not be executed before the event occurs
(such as when a user clicks a button).
For a tutorial about Events, read our
JavaScript Events Tutorial.
Property/Method
Description
Belongs To
altKey
Returns whether the “ALT” key was pressed when the mouse event was triggered
MouseEvent
altKey
Returns whether the “ALT” key was pressed when the key event was triggered
KeyboardEvent,
TouchEvent
animationName
Returns the name of the animation
AnimationEvent
bubbles
Returns whether or not a specific event is a bubbling event
Event
button
Returns which mouse button was pressed when the mouse event was triggered
MouseEvent
buttons
Returns which mouse buttons were pressed when the mouse event was triggered
MouseEvent
cancelable
Returns whether or not an event can have its default action prevented
Event
charCode
Returns the Unicode character code of the key that triggered the onkeypress event
KeyboardEvent
changeTouches
Returns a list of all the touch objects whose state changed between the
previous touch and this touch
TouchEvent
clientX
Returns the horizontal coordinate of the mouse pointer, relative to the current window, when the mouse event was triggered
MouseEvent,
TouchEvent
clientY
Returns the vertical coordinate of the mouse pointer, relative to the current window, when the mouse event was triggered
MouseEvent,
TouchEvent
clipboardData
Returns an object containing the data affected by the clipboard
operation
ClipboardData
code
Returns the code of the key that triggered the event
KeyboardEvent
composed
Returns whether the event is composed or not
Event
ctrlKey
Returns whether the “CTRL” key was pressed when the mouse event was triggered
MouseEvent
ctrlKey
Returns whether the “CTRL” key was pressed when the key event was triggered
KeyboardEvent,
TouchEvent
currentTarget
Returns the element whose event listeners triggered the event
Event
data
Returns the inserted characters
InputEvent
dataTransfer
Returns an object containing the data being dragged/dropped, or
inserted/deleted
DragEvent, InputEvent
defaultPrevented
Returns whether or not the preventDefault() method was called for the event
Event
deltaX
Returns the horizontal scroll amount of a mouse wheel (x-axis)
WheelEvent
deltaY
Returns the vertical scroll amount of a mouse wheel (y-axis)
WheelEvent
deltaZ
Returns the scroll amount of a mouse wheel for the z-axis
WheelEvent
deltaMode
Returns a number that represents the unit of measurements for delta values (pixels, lines or pages)
WheelEvent
detail
Returns a number that indicates how many times the mouse was clicked
UiEvent
elapsedTime
Returns the number of seconds an animation has been running
AnimationEvent
elapsedTime
Returns the number of seconds a transition has been running
eventPhase
Returns which phase of the event flow is currently being evaluated
Event
getTargetRanges()
Returns an array containing target ranges that will be affected by the
insertion/deletion
InputEvent
getModifierState()
Returns an array containing target ranges that will be affected by the
insertion/deletion
MouseEvent
inputType
Returns the type of the change (i.e “inserting” or “deleting”)
InputEvent
isComposing
Returns whether the state of the event is composing or not
InputEvent,
KeyboardEvent
isTrusted
Returns whether or not an event is trusted
Event
key
Returns the key value of the key represented by the event
KeyboardEvent
key
Returns the key of the changed storage item
StorageEvent
keyCode
Returns the Unicode character code of the key that triggered the onkeypress event, or the
Unicode key code of the key that triggered the onkeydown or
onkeyup event
KeyboardEvent
location
Returns the location of a key on the keyboard or device
KeyboardEvent
lengthComputable
Returns whether the length of the progress can be computable or not
ProgressEvent
loaded
Returns how much work has been loaded
ProgressEvent
metaKey
Returns whether the “META” key was pressed when an event was triggered
MouseEvent
metaKey
Returns whether the “meta” key was pressed when the key event was triggered
KeyboardEvent,
TouchEvent
MovementX
Returns the horizontal coordinate of the mouse pointer relative to the
position of the last mousemove event
MouseEvent
MovementY
Returns the vertical coordinate of the mouse pointer relative to the
position of the last mousemove event
MouseEvent
newValue
Returns the new value of the changed storage item
StorageEvent
newURL
Returns the URL of the document, after the hash has been changed
HasChangeEvent
offsetX
Returns the horizontal coordinate of the mouse pointer relative to the
position of the edge of the target element
MouseEvent
offsetY
Returns the vertical coordinate of the mouse pointer relative to the
position of the edge of the target element
MouseEvent
oldValue
Returns the old value of the changed storage item
StorageEvent
oldURL
Returns the URL of the document, before the hash was changed
HasChangeEvent
onemptied
The event occurs when something bad happens and the media file is suddenly
unavailable (like unexpectedly disconnects)
pageX
Returns the horizontal coordinate of the mouse pointer, relative to the document, when the mouse event was triggered
MouseEvent
pageY
Returns the vertical coordinate of the mouse pointer, relative to the document, when the mouse event was triggered
MouseEvent
persisted
Returns whether the webpage was cached by the browser
PageTransitionEvent
preventDefault()
Cancels the event if it is cancelable, meaning that the default action that belongs to the event will not occur
Event
propertyName
Returns the name of the CSS property associated with the animation or transition
AnimationEvent,
TransitionEvent
pseudoElement
Returns the name of the pseudo-element of the animation or transition
AnimationEvent,
TransitionEvent
region
MouseEvent
relatedTarget
Returns the element related to the element that triggered the mouse event
MouseEvent
relatedTarget
Returns the element related to the element that triggered the event
FocusEvent
repeat
Returns whether a key is being hold down repeatedly, or not
KeyboardEvent
screenX
Returns the horizontal coordinate of the mouse pointer, relative to the screen, when an event was triggered
MouseEvent
screenY
Returns the vertical coordinate of the mouse pointer, relative to the screen, when an event was triggered
MouseEvent
shiftKey
Returns whether the “SHIFT” key was pressed when an event was triggered
MouseEvent
shiftKey
Returns whether the “SHIFT” key was pressed when the key event was triggered
KeyboardEvent,
TouchEvent
state
Returns an object containing a copy of the history entries
PopStateEvent
stopImmediatePropagation()
Prevents other listeners of the same event from being called
Event
stopPropagation()
Prevents further propagation of an event during event flow
Event
storageArea
Returns an object representing the affected storage object
StorageEvent
target
Returns the element that triggered the event
Event
targetTouches
Returns a list of all the touch objects that are in contact with the
surface and where the touchstart event occured on the same target element as
the current target element
TouchEvent
timeStamp
Returns the time (in milliseconds relative to the epoch) at which the event was created
Event
total
Returns the total amount of work that will be loaded
ProgressEvent
touches
Returns a list of all the touch objects that are currently in contact with
the surface
TouchEvent
transitionend
The event occurs when a CSS transition has completed
TransitionEvent
type
Returns the name of the event
Event
url
Returns the URL of the changed item’s document
StorageEvent
which
Returns which mouse button was pressed when the mouse event was triggered
MouseEvent
which
Returns the Unicode character code of the key that triggered the onkeypress event, or the
Unicode key code of the key that triggered the onkeydown or
onkeyup event
KeyboardEvent
view
Returns a reference to the Window object where the event occurred
UiEvent
