from:
http://www.w3schools.com/jsref/jsref_events.asp
Events
By using JavaScript, we have the ability to create dynamic web pages. Events are actions that can be detected by JavaScript.
Every element on a web page has certain events which can trigger JavaScript functions. For example, we can use the onClick event of a button element to indicate that a function will run when a user clicks on the button. We define the events in the HTML tags.
Examples of events:
* A mouse click
* A web page or an image loading
* Mousing over a hot spot on the web page
* Selecting an input box in an HTML form
* Submitting an HTML form
* A keystroke
Note: Events are normally used in combination with functions, and the function will not be executed before the event occurs!
Event Handlers
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 the attributes that can be inserted into HTML tags to define event actions.
FF: Firefox, N: Netscape, IE: Internet Explorer
| Attribute |
The event occurs when... |
FF |
N |
IE |
| onabort |
Loading of an image is interrupted |
1 |
3 |
4 |
| onblur |
An element loses focus |
1 |
2 |
3 |
| onchange |
The user changes the content of a field |
1 |
2 |
3 |
| onclick |
Mouse clicks an object |
1 |
2 |
3 |
| ondblclick |
Mouse double-clicks an object |
1 |
4 |
4 |
| onerror |
An error occurs when loading a document or an image |
1 |
3 |
4 |
| onfocus |
An element gets focus |
1 |
2 |
3 |
| onkeydown |
A keyboard key is pressed |
1 |
4 |
3 |
| onkeypress |
A keyboard key is pressed or held down |
1 |
4 |
3 |
| onkeyup |
A keyboard key is released |
1 |
4 |
3 |
| onload |
A page or an image is finished loading |
1 |
2 |
3 |
| onmousedown |
A mouse button is pressed |
1 |
4 |
4 |
| onmousemove |
The mouse is moved |
1 |
6 |
3 |
| onmouseout |
The mouse is moved off an element |
1 |
4 |
4 |
| onmouseover |
The mouse is moved over an element |
1 |
2 |
3 |
| onmouseup |
A mouse button is released |
1 |
4 |
4 |
| onreset |
The reset button is clicked |
1 |
3 |
4 |
| onresize |
A window or frame is resized |
1 |
4 |
4 |
| onselect |
Text is selected |
1 |
2 |
3 |
| onsubmit |
The submit button is clicked |
1 |
2 |
3 |
| onunload |
The user exits the page |
1 |
2 |
3 |
(141)
