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HTML Events References


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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 of 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


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