Javascript Events

Event:

The happening of something is known as an event.

JavaScript event:

JavaScript uses DOM events for interacting with HTML when a webpage is manipulated by a user or browser. Clicking a button, keypress, etc. are examples of an event.

Example:

<!DOCTYPE html>
<html>
<body>
<script>
function sayHello() {
alert("Onclick event.")
}
</script>
<p>Click Say Hello button and see result.</p>
<form>
<input type="button" onclick="sayHello()" value="Say Hello" />
</form>
</body>
</html>

Try it:

on jsbin.com

JavaScript events list:

Attribute
     Description
Offline
Triggers when the document goes offline
Onabort
Triggers on an abort event
onafterprint
Triggers after the document is printed
onbeforeonload
Triggers before the document loads
onbeforeprint
Triggers before the document is printed
onblur
Triggers when the window loses focus
oncanplay
Triggers when media can start play, but might have to stop for buffering
oncanplaythrough
Triggers when media can be played to the end, without stopping for buffering
onchange
Triggers when an element changes
onclick
Triggers on a mouse click
oncontextmenu
Triggers when a context menu is triggered
ondblclick
Triggers on a mouse double-click
ondrag
Triggers when an element is dragged
ondragend
Triggers at the end of a drag operation
ondragenter
Triggers when an element has been dragged to a valid drop target
ondragleave
Triggers when an element is being dragged over a valid drop target
ondragover
Triggers at the start of a drag operation
ondragstart
Triggers at the start of a drag operation
ondrop
Triggers when the dragged element is being dropped
ondurationchange
Triggers when the length of the media is changed
onemptied
Triggers when a media resource element suddenly becomes empty.
onended
Triggers when media has reached the end
onerror
Triggers when an error occurs
onfocus
Triggers when the window gets focus
onformchange
Triggers when a form changes
onforminput
Triggers when a form gets user input
onhaschange
Triggers when the document has changed
oninput
Triggers when an element gets user input
oninvalid
Triggers when an element is invalid
onkeydown
Triggers when a key is pressed
onkeypress
Triggers when a key is pressed and released
onkeyup
Triggers when a key is released
onload
Triggers when the document loads
onloadeddata
Triggers when media data is loaded
onloadedmetadata
Triggers when the duration and other media data of a media element are loaded
onloadstart
Triggers when the browser starts to load the media data
onmessage
Triggers when the message is triggered
onmousedown
Triggers when a mouse button is pressed
onmousemove
Triggers when the mouse pointer moves
onmouseout
Triggers when the mouse pointer moves out of an element
onmouseover
Triggers when the mouse pointer moves over an element
onmouseup
Triggers when a mouse button is released
onmousewheel
Triggers when the mouse wheel is being rotated
onoffline
Triggers when the document goes offline
onoine
Triggers when the document comes online
ononline
Triggers when the document comes online
onpagehide
Triggers when the window is hidden
onpageshow
Triggers when the window becomes visible
onpause
Triggers when media data is paused
onplay
Triggers when media data is going to start playing
onplaying
Triggers when media data has started playing
onpopstate
Triggers when the window’s history changes
onprogress
Triggers when the browser is fetching the media data
onratechange
Triggers when the media data’s playing rate has changed
onreadystatechange
Triggers when the ready-state changes
onredo
Triggers when the document performs a redo
onresize
Triggers when the window is resized
onscroll
Triggers when an element’s scrollbar is being scrolled
onseeked
Triggers when a media element’s seeking attribute is no longer true, and the seeking has ended
onseeking
Triggers when a media element’s seeking attribute is true, and the seeking has begun
onselect
Triggers when an element is selected
onstalled
Triggers when there is an error in fetching media data
onstorage
Triggers when a document loads
onsubmit
Triggers when a form is submitted
onsuspend
Triggers when the browser has been fetching media data, but stopped before the entire media file was fetched
ontimeupdate
Triggers when media changes its playing position
onundo
Triggers when a document performs an undo
onunload
Triggers when the user leaves the document
onvolumechange
Triggers when media changes the volume, also when the volume is set to “mute”
onwaiting
Triggers when media has stopped playing, but is expected to resume