Among other enhanced options introduced in HTML 4.0., there is an option, which allows HTML events produce certain actions in browsers, for instance, perform script, when user clicks the HTML element.

Here goes a list of attributes divided into sections.

Window events (these events are accepted in frameset and body elements)

Onload – the script is performed after the document is loaded

Onunload - the script is performed after the document is unloaded

Form events (are accepted in forms elements only)

Onchange is performed if the element is altered

Onsubmit is performed after form submission

Onreset is performed after form reset

Onselect Is performed after element selection

Onblur is performed when the element is not in focus

Onfocus is performed when the element is in focus

Keyboard-related events

(not accepted for frame, base, bdo, br, html, frameset, head, iframe, meta, script, param, style, and title elements)

Onkeydown – defines an action, which is performed after pressing the key

onkeypress– defines an action, which is performed after pressing and releasing the key

onkeyup – defines an action, which is performed after releasing the key

Mouse-related events

onclick– defines an action, which is performed by mouse click

ondblclick - defines an action, which is performed by double- mouse click

onmousedown - defines an action, which is performed when the mouse is pressed

onmousemove- defines an action, which is performed when the pointer is moving

onmouseout- defines an action, which is performed when the pointer is removed from the element

onmouseover - defines an action, which is performed when the pointer is over the element

onmouseup - defines an action, which is performed when the mouse is released

HTML URLs

HTML scripts

HTML URL encode

HTML webserver