Javascript Events

by

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