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HTML DOM Events


HTML DOM Events

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).

Tip: The event model was standardized by the W3C in DOM Level 2.


HTML DOM Events

DOM: Indicates in which DOM Level the property was introduced.

Mouse Events

Event Description DOM
onclick The event occurs when the user clicks on an element 2
oncontextmenu The event occurs when the user right-clicks on an element to open a context menu 3
ondblclick The event occurs when the user double-clicks on an element 2
onmousedown The event occurs when a user presses a mouse button over an element 2
onmouseenter The event occurs when the pointer is moved onto an element 2
onmouseleave The event occurs when the pointer a user moves the mouse pointer out of an element 2
onmousemove The event occurs when the pointer is moving while it is over an element 2
onmouseover The event occurs when the pointer is moved onto an element, or onto one of its children 2
onmouseout The event occurs when a user moves the mouse pointer out of an element, or out of one of its children 2
onmouseup The event occurs when a user releases a mouse button over an element 2

Keyboard Events

Event Description DOM
onkeydown The event occurs when the user is pressing a key 2
onkeypress The event occurs when the user presses a key 2
onkeyup The event occurs when the user releases a key 2

Frame/Object Events

Event Description DOM
onabort The event occurs when the loading of a resource has been aborted 2
onbeforeunload The event occurs before the document is about to be unloaded 2
onerror The event occurs when an error occurs while loading an external file 2
onhashchange The event occurs when there has been changes to the anchor part of a URL 3
onload The event occurs when an object has loaded 2
onpageshow The event occurs when a user navigates to a webpage 3
onpagehide The event occurs when a user navigates away from a webpage 3
onresize The event occurs when the document view is resized 2
onscroll The event occurs when an element's scrollbar is being scrolled 2
onunload The event occurs once a page has unloaded (for <body>) 2

Form Events

Event Description DOM
onblur The event occurs when an element loses focus 2
onchange The event occurs when the content of a form element, the selection, or the checked state have changed (for <input>, <keygen>, <select>, and <textarea>) 2
onfocus The event occurs when an element gets focus 2
onfocusin The event occurs when an element is about to get focus 2
onfocusout The event occurs when an element is about to lose focus 2
oninput The event occurs when an element gets user input 3
oninvalid The event occurs when an element is invalid 3
onreset The event occurs when a form is reset 2
onsearch The event occurs when a user writes something in a search field (for <input="search">) 3
onselect The event occurs after the user selects some text (for <input> and <textarea>) 2
onsubmit The event occurs when a form is submitted 2

Drag Events

Event Description DOM
ondrag The event occurs when an element is being dragged 3
ondragend The event occurs when the user has finished dragging an element 3
ondragenter The event occurs when the dragged element enters the drop target 3
ondragleave The event occurs when the dragged element leaves the drop target 3
ondragover The event occurs when the dragged element is over the drop target 3
ondragstart The event occurs when the user starts to drag an element 3
ondrop The event occurs when the dragged element is dropped on the drop target 3

Clipboard Events

Event Description DOM
oncopy The event occurs when the user copies the content of an element  
oncut The event occurs when the user cuts the content of an element  
onpaste The event occurs when the user pastes some content in an element  

Print Events

Event Description DOM
onafterprint The event occurs when a page has started printing, or if the print dialogue box has been closed 3
onbeforeprint The event occurs when a page is about to be printed 3

Media Events

Event Description DOM
onabort The event occurs when the loading of a media is aborted 3
oncanplay The event occurs when the browser can start playing the media (when it has buffered enough to begin) 3
oncanplaythrough The event occurs when the browser can play through the media without stopping for buffering 3
ondurationchange The event occurs when the duration of the media is changed 3
onemptied The event occurs when something bad happens and the media file is suddenly unavailable (like unexpectedly disconnects) 3
onended The event occurs when the media has reach the end (useful for messages like "thanks for listening") 3
onerror The event occurs when an error occurred during the loading of a media file 3
onloadeddata The event occurs when media data is loaded 3
onloadedmetadata The event occurs when meta data (like dimensions and duration) are loaded 3
onloadstart The event occurs when the browser starts looking for the specified media 3
onpause The event occurs when the media is paused either by the user or programmatically 3
onplay The event occurs when the media has been started or is no longer paused 3
onplaying The event occurs when the media is playing after having been paused or stopped for buffering 3
onprogress The event occurs when the browser is in the process of getting the media data (downloading the media) 3
onratechange The event occurs when the playing speed of the media is changed 3
onseeked The event occurs when the user is finished moving/skipping to a new position in the media 3
onseeking The event occurs when the user starts moving/skipping to a new position in the media 3
onstalled The event occurs when the browser is trying to get media data, but data is not available 3
onsuspend The event occurs when the browser is intentionally not getting media data 3
ontimeupdate The event occurs when the playing position has changed (like when the user fast forwards to a different point in the media) 3
onvolumechange The event occurs when the volume of the media has changed (includes setting the volume to "mute") 3
onwaiting The event occurs when the media has paused but is expected to resume (like when the media pauses to buffer more data) 3

Animation Events

Event Description DOM
animationend The event occurs when a CSS animation has completed 3
animationiteration The event occurs when a CSS animation is repeated 3
animationstart The event occurs when a CSS animation has started 3

Transition Events

Event Description DOM
transitionend The event occurs when a CSS transition has completed 3

Misc Events

Event Description DOM
onmessage The event occurs when a message is received through or from an object (WebSocket, Web Worker, Event Source or a child frame or a parent window) 3
onmousewheel Deprecated. Use the onwheel event instead  
ononline The event occurs when the browser starts to work online 3
onoffline The event occurs when the browser starts to work offline 3
onpopstate The event occurs when the window's history changes 3
onshow The event occurs when a <menu> element is shown as a context menu 3
onstorage The event occurs when a Web Storage area is updated 3
ontoggle The event occurs when the user opens or closes the <details> element 3
onwheel The event occurs when the mouse wheel rolls up or down over an element 3

Event Object

Constants

Constant Description DOM
CAPTURING_PHASE The current event phase is the capture phase (1) 1
AT_TARGET The current event is in the target phase, i.e. it is being evaluated at the event target (2) 2
BUBBLING_PHASE The current event phase is the bubbling phase (3) 3

Properties

Property Description DOM
bubbles Returns whether or not a specific event is a bubbling event 2
cancelable Returns whether or not an event can have its default action prevented 2
currentTarget Returns the element whose event listeners triggered the event 2
defaultPrevented Returns whether or not the preventDefault() method was called for the event 3
eventPhase Returns which phase of the event flow is currently being evaluated 2
isTrusted Returns whether or not an event is trusted 3
target Returns the element that triggered the event 2
timeStamp Returns the time (in milliseconds relative to the epoch) at which the event was created 2
type Returns the name of the event 2
view Returns a reference to the Window object where the event occured 2

Methods

Method Description DOM
initEvent() Specifies the event type, whether or not the event can bubble, whether or not the event's default action can be prevented 2
preventDefault() Cancels the event if it is cancelable, meaning that the default action that belongs to the event will not occur 2
stopImmediatePropagation() Prevents other listeners of the same event from being called 3
stopPropagation() Prevents further propagation of an event during event flow 2

EventTarget Object

Methods

Method Description DOM
addEventListener() Allows the registration of event listeners on the event target (IE8 = attachEvent()) 2
dispatchEvent() Allows to send the event to the subscribed event listeners (IE8 = fireEvent()) 2
removeEventListener() Allows the removal of event listeners on the event target (IE8 = detachEvent()) 2

EventListener Object

Methods

Method Description DOM
handleEvent() Called whenever an event occurs of the event type for which the EventListener interface was registered 2

DocumentEvent Object

Methods

Method Description DOM
createEvent()   2

MouseEvent Object

Properties

Property Description DOM
altKey Returns whether the "ALT" key was pressed when the mouse event was triggered 2
button Returns which mouse button was pressed when the mouse event was triggered 2
buttons Returns which mouse buttons were pressed when the mouse event was triggered 3
clientX Returns the horizontal coordinate of the mouse pointer, relative to the current window, when the mouse event was triggered 2
clientY Returns the vertical coordinate of the mouse pointer, relative to the current window, when the mouse event was triggered 2
ctrlKey Returns whether the "CTRL" key was pressed when the mouse event was triggered 2
detail Returns a number that indicates how many times the mouse was clicked 2
metaKey Returns whether the "META" key was pressed when an event was triggered 2
relatedTarget Returns the element related to the element that triggered the event 2
screenX Returns the horizontal coordinate of the mouse pointer, relative to the screen, when an event was triggered 2
screenY Returns the vertical coordinate of the mouse pointer, relative to the screen, when an event was triggered 2
shiftKey Returns whether the "SHIFT" key was pressed when an event was triggered 2
which Returns which mouse button was pressed when the mouse event was triggered 2

Methods

Method Description W3C
initMouseEvent() Initializes the value of a MouseEvent object 2

KeyboardEvent Object

Properties

Property Description DOM
altKey Returns whether the "ALT" key was pressed when the key event was triggered 2
ctrlKey Returns whether the "CTRL" key was pressed when the key event was triggered 2
charCode Returns the Unicode character code of the key that triggered the onkeypress event 2
key Returns the key value of the key represented by the event 3
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 2
location Returns the location of a key on the keyboard or device 3
metaKey Returns whether the "meta" key was pressed when the key event was triggered 2
shiftKey Returns whether the "SHIFT" key was pressed when the key event was triggered 2
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 2

Methods

Method Description W3C
initKeyboardEvent() Initializes the value of a KeyboardEvent object 3


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