HTML 4.0 Event Attributes
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 |
Attribute definitions
- onload = script [CT]
- The onload event occurs when the user agent finishes loading a window or all frames within a FRAMESET. This attribute may be used with BODY and FRAMESET elements.
- onunload = script [CT]
- The onunload event occurs when the user agent removes a document from a window or frame. This attribute may be used with BODY and FRAMESET elements.
- onclick = script [CT]
- The onclick event occurs when the pointing device button is clicked over an element. This attribute may be used with most elements.
- ondblclick = script [CT]
- The ondblclick event occurs when the pointing device button is double clicked over an element. This attribute may be used with most elements.
- onmousedown = script [CT]
- The onmousedown event occurs when the pointing device button is pressed over an element. This attribute may be used with most elements.
- onmouseup = script [CT]
- The onmouseup event occurs when the pointing device button is released over an element. This attribute may be used with most elements.
- onmouseover = script [CT]
- The onmouseover event occurs when the pointing device is moved onto an element. This attribute may be used with most elements.
- onmousemove = script [CT]
- The onmousemove event occurs when the pointing device is moved while it is over an element. This attribute may be used with most elements.
- onmouseout = script [CT]
- The onmouseout event occurs when the pointing device is moved away from an element. This attribute may be used with most elements.
- onfocus = script [CT]
- The onfocus event occurs when an element receives focus either by the pointing device or by tabbing navigation. This attribute may be used with the following elements: A, AREA, LABEL, INPUT, SELECT, TEXTAREA, and BUTTON.
- onblur = script [CT]
- The onblur event occurs when an element loses focus either by the pointing device or by tabbing navigation. It may be used with the same elements as onfocus.
- onkeypress = script [CT]
- The onkeypress event occurs when a key is pressed and released over an element. This attribute may be used with most elements.
- onkeydown = script [CT]
- The onkeydown event occurs when a key is pressed down over an element. This attribute may be used with most elements.
- onkeyup = script [CT]
- The onkeyup event occurs when a key is released over an element. This attribute may be used with most elements.
- onsubmit = script [CT]
- The onsubmit event occurs when a form is submitted. It only applies to the FORM element.
- onreset = script [CT]
- The onreset event occurs when a form is reset. It only applies to the FORM element.
- onselect = script [CT]
- The onselect event occurs when a user selects some text in a text field. This attribute may be used with the INPUT and TEXTAREA elements.
- onchange = script [CT]
- The onchange event occurs when a control loses the input focus and its value has been modified since gaining focus. This attribute applies to the following elements: INPUT, SELECT, and TEXTAREA.
REF:
http://www.w3.org/TR/REC-html40/interact/scripts.html