HTML4.0 Event Properties

Window event (Windows events)

Valid only in the body and frameset elements.

Property	value	Description
OnLoad	Script	Execute script when document is loaded
OnUnload	Script	Execute script when document is unloaded

Form element events (form element events)

Valid only on form elements.

Property	value	Description
OnChange	Script	Execute script when element changes
OnSubmit	Script	Execute script when form is submitted
OnReset	Script	Execute script when form is reset
Onselect	Script	Execute script when element is selected
Onblur	Script	Execute script when element loses focus
onfocus	Script	Execute script when element gets focus

Keyboard event (keyboard events)

is not valid in the following elements: base, BDO, BR, Frame, frameset, head, HTML, iframe, Meta, param, script, style, and title element.

Property	value	Description
OnKeyDown	Script	Execute script when the keyboard is pressed
onkeypress	Script	Execute script when the keyboard is pressed and released
OnKeyUp	Script	Execute script when keyboard is released

Mouse event (keyboard events)

is not valid in the following elements: base, BDO, BR, Frame, frameset, head, HTML, iframe, Meta, param, script, style, Title element.

Property	value	Description
OnClick	Script	Execute script when the mouse is clicked
OnDblClick	Script	Execute script when mouse is double-clicked
OnMouseDown	Script	Execute script when mouse button is released
OnMouseMove	Script	Execute script when mouse pointer moves
onmouseout	Script	Executes a script when the mouse pointer moves out of an element
onmouseover	Script	Executes a script when the mouse pointer hovers over an element
OnMouseUp	Script	Execute script when mouse button is released