HTML / XHTML Standard Event Attributes

Standard Event Attributes

HTML 4 added the ability to let events trigger actions in a browser, like starting a JavaScript when a user clicks on an element.

To learn more about programming events, please visit our JavaScript tutorial and our DHTML tutorial.

Below is the standard event attributes that can be inserted into HTML / XHTML elements to define event actions.

The two attributes below can only be used in <body> or <frameset>:

Attribute	Value	Description
onload	script	Script to be run when a document load
onunload	script	Script to be run when a document unload

The attributes below can be used 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 change
onfocus	script	Script to be run when an element gets focus
onreset	script	Script to be run when a form is reset
onselect	script	Script to be run when an element is selected
onsubmit	script	Script to be run when a form is submitted

The attribute below can be used with the img element:

Attribute	Value	Description
onabort	script	Script to be run when loading of an image is interrupted

Valid in all elements except base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, and title.

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

Valid in all elements except base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, and title.

Attribute	Value	Description
onclick	script	Script to be run on a mouse click
ondblclick	script	Script to be run on a mouse double-click
onmousedown	script	Script to be run when mouse button is pressed
onmousemove	script	Script to be run when mouse pointer moves
onmouseout	script	Script to be run when mouse pointer moves out of an element
onmouseover	script	Script to be run when mouse pointer moves over an element
onmouseup	script	Script to be run when mouse button is released