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XHTML Event Attributes

New to HTML 4.0 was the ability to let HTML events trigger actions in the browser, like starting a JavaScript when a user clicks on an HTML element. Below is a list of attributes that can be inserted into HTML tags to define event actions.

If you want to learn more about programming with these events, you should study our JavaScript tutorial and our DHTML tutorial.

Window Events

Only valid in body and frameset elements

Attribute	Value	Description
onload	script	Script to be run when a document loads
onunload	script	Script to be run when a document unloads

Form Element Events

Only valid in form elements.

Attribute	Value	Description
onchange	script	Script to be run when the element changes
onsubmit	script	Script to be run when the form is submitted
onreset	script	Script to be run when the form is reset
onselect	script	Script to be run when the element is selected
onblur	script	Script to be run when the element loses focus
onfocus	script	Script to be run when the element gets focus

Keyboard Events

Not valid in base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, and title elements.

Attribute	Value	Description
onkeydown	script	What to do when key is pressed
onkeypress	script	What to do when key is pressed and released
onkeyup	script	What to do when key is released

Mouse Events

Not valid in base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, and title elements.

Attribute	Value	Description
onclick	script	What to do on a mouse click
ondblclick	script	What to do on a mouse doubleclick
onmousedown	script	What to do when mouse button is pressed
onmousemove	script	What to do when mouse pointer moves
onmouseover	script	What to do when mouse pointer moves over an element
onmouseout	script	What to do when mouse pointer moves out of an element
onmouseup	script	What to do when mouse button is released

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