New to HTML 4.0 is 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.
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, title elements.
| Attribute |
Value |
Description |
| onclick |
script |
What to do on a mouse click |
| ondblclick |
script |
What to do on a mouse double-click
|
| onmousedown |
script |
What to do when mouse button is pressed
|
| onmousemove |
script |
What to do when mouse pointer moves
|
| onmouseout |
script |
What to do when mouse pointer moves out
of an element |
| onmouseover |
script |
What to do when mouse pointer moves
over an element |
| onmouseup |
script |
What to do when mouse button is
released
|
|
