HTML Events References

When a user visit your website, they do things like click on text and images and given links, hover over things etc. These are examples of what JavaScript calls events.

We can write our event handlers in Javascript or vbscript and can specify these event handlers as a value of event tag attribute. The HTML 4.01 specification defines 19 event attributes as listed below:

<body> and <frameset> Level Events:

There are only two attributes which can be used to trigger any javascript or vbscript code when there is any event occurs on document level.

Attribute

Value

Description

onload

script

Script runs when a HTML document loads

onunload

script

Script runs when a HTML document unloads

NOTE: Here script refer to any VBScript or JavaScript function or piece of code.

<form> Level Events:

There are following six attributes which can be used to trigger any javascript or vbscript code when there is any event occurs on form level.

Attribute

Value

Description

onchange

script

Script runs when the element changes

onsubmit

script

Script runs when the form is submitted

onreset

script

Script runs when the form is reset

onselect

script

Script runs when the element is selected

onblur

script

Script runs when the element loses focus

onfocus

script

Script runs when the element gets focus

Keyboard Events

There are following three events which are generated by keyboard. These events are not valid in base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, and title elements.

Attribute

Value

Description

onkeydown

script

Script runs when key is pressed

onkeypress

script

Script runs when key is pressed and released

onkeyup

script

Script runs when key is released

Other Events:

There following other 7 events which are generated by mouse when it comes in contact of any HTML tag. These events are not valid in base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, title elements.

Attribute

Value

Description

onclick

script

Script runs when a mouse click

ondblclick

script

Script runs when a mouse double-click

onmousedown

script

Script runs when mouse button is pressed

onmousemove

script

Script runs when mouse pointer moves

onmouseout

script

Script runs when mouse pointer moves out of an element

onmouseover

script

Script runs when mouse pointer moves over an element

onmouseup

script

Script runs when mouse button is released