SmithsonProAdvancement: April 2012

Window Event Attributes

Events triggered for the window object (applies to the <body> tag):

Attribute	Value	Description
onafterprintNew	script	Script to be run after the document is printed
onbeforeprintNew	script	Script to be run before the document is printed
onbeforeonloadNew	script	Script to be run before the document loads
onblur	script	Script to be run when the window loses focus
onerrorNew	script	Script to be run when an error occur
onfocus	script	Script to be run when the window gets focus
onhaschangeNew	script	Script to be run when the document has changed
onload	script	Script to be run when the document loads
onmessageNew	script	Script to be run when the message is triggered
onofflineNew	script	Script to be run when the document goes offline
ononlineNew	script	Script to be run when the document comes online
onpagehideNew	script	Script to be run when the window is hidden
onpageshowNew	script	Script to be run when the window becomes visible
onpopstateNew	script	Script to be run when the window's history changes
onredoNew	script	Script to be run when the document performs a redo
onresizeNew	script	Script to be run when the window is resized
onstorageNew	script	Script to be run when a Web Storage area is updated
onundoNew	script	Script to be run when the document performs an undo
onunloadNew	script	Script to be run when the user leaves the document

Form Events

Events triggered by actions inside a HTML form (applies to all HTML5 elements, but is most common in form elements):

Attribute	Value	Description
onblur	script	Script to be run when an element loses focus
onchange	script	Script to be run when an element changes
oncontextmenuNew	script	Script to be run when a context menu is triggered
onfocus	script	Script to be run when an element gets focus
onformchangeNew	script	Script to be run when a form changes
onforminputNew	script	Script to be run when a form gets user input
oninputNew	script	Script to be run when an element gets user input
oninvalidNew	script	Script to be run when an element is invalid
onreset	script	Script to be run when a form is reset Not supported in HTML5
onselect	script	Script to be run when an element is selected
onsubmit	script	Script to be run when a form is submitted

Keyboard Events

Events triggered by a keyboard (applies to all HTML5 elements):

Attribute	Value	Description
onkeydown	script	Script to be run when a key is pressed down
onkeypress	script	Script to be run when a key is pressed and released
onkeyup	script	Script to be run when a key is released

Mouse Events

Events triggered by a mouse, or similar user actions (applies to all HTML5 elements):

Attribute	Value	Description
onclick	script	Script to be run on a mouse click
ondblclick	script	Script to be run on a mouse double-click
ondragNew	script	Script to be run when an element is dragged
ondragendNew	script	Script to be run at the end of a drag operation
ondragenterNew	script	Script to be run when an element has been dragged to a valid drop target
ondragleaveNew	script	Script to be run when an element leaves a valid drop target
ondragoverNew	script	Script to be run when an element is being dragged over a valid drop target
ondragstartNew	script	Script to be run at the start of a drag operation
ondropNew	script	Script to be run when dragged element is being dropped
onmousedown	script	Script to be run when a mouse button is pressed
onmousemove	script	Script to be run when the mouse pointer moves
onmouseout	script	Script to be run when the mouse pointer moves out of an element
onmouseover	script	Script to be run when the mouse pointer moves over an element
onmouseup	script	Script to be run when a mouse button is released
onmousewheelNew	script	Script to be run when the mouse wheel is being rotated
onscrollNew	script	Script to be run when an element's scrollbar is being scrolled

Media Events

Events triggered by medias like videos, images and audio (applies to all HTML5 elements, but is most common in media elements, like audio, embed, img, object, and video):

Attribute	Value	Description
onabort	script	Script to be run on abort
oncanplayNew	script	Script to be run when a file is ready to start playing (when it has buffered enough to begin)
oncanplaythroughNew	script	Script to be run when a file can be played all the way to the end without pausing for buffering
ondurationchangeNew	script	Script to be run when the length of the media changes
onemptiedNew	script	Script to be run when something bad happens and the file is suddenly unavailable (like unexpectedly disconnects)
onendedNew	script	Script to be run when the media has reach the end (a useful event for messages like "thanks for listening")
onerrorNew	script	Script to be run when an error occurs when the file is being loaded
onloadeddataNew	script	Script to be run when media data is loaded
onloadedmetadataNew	script	Script to be run when meta data (like dimensions and duration) are loaded
onloadstartNew	script	Script to be run just as the file begins to load before anything is actually loaded
onpauseNew	script	Script to be run when the media is paused either by the user or programmatically
onplayNew	script	Script to be run when the media is ready to start playing
onplayingNew	script	Script to be run when the media actually has started playing
onprogressNew	script	Script to be run when the browser is in the process of getting the media data
onratechangeNew	script	Script to be run each time the playback rate changes (like when a user switches to a slow motion or fast forward mode)
onreadystatechangeNew	script	Script to be run each time the ready state changes (the ready state tracks the state of the media data)
onseekedNew	script	Script to be run when the seeking attribute is set to false indicating that seeking has ended
onseekingNew	script	Script to be run when the seeking attribute is set to true indicating that seeking is active
onstalledNew	script	Script to be run when the browser is unable to fetch the media data for whatever reason
onsuspendNew	script	Script to be run when fetching the media data is stopped before it is completely loaded for whatever reason
ontimeupdateNew	script	Script to be run when the playing position has changed (like when the user fast forwards to a different point in the media)
onvolumechangeNew	script	Script to be run each time the volume is changed which (includes setting the volume to "mute")
onwaitingNew	script	Script to be run when the media has paused but is expected to resume (like when the media pauses to buffer more data)