Mouse Events
onclick The event occurs when the user clicks on an element.
ondblclick The event occurs when the user double-clicks on an element.
onmousemove The event occurs when a user moves the mouse pointer over an element.
onmouseover The event occurs when a user moves the mouse pointer over an element.
onmouseout The event occurs when a user moves the mouse pointer out of an element.
onmousedown The event occurs when a user presses a mouse button over an element.
onmouseup The event occurs when a user releases a mouse button over an element.
Keyboard Events
onkeydown The event occurs when the user is pressing a key or holding down a key.
onkeypress The event occurs when the user is pressing a key or holding down a key.
onkeyup The event occurs when a keyboard key is released.
Frame/Object Events
onload The event occurs when a document, frameset, or object has been loaded.
onunload The event occurs when a document is removed from a window or frame.
onabort The event occurs when an image is stopped from loading before completely loaded.
onerror The event occurs when an image does not load properly.
onresize The event occurs when a document view is resized.
onscroll The event occurs when a document view is scrolled.
Form Events
onfocus The event occurs when an element gets focus.
onblur The event occurs when a form element loses focus
onchange The event occurs when any change has occurred in a form element.
onsubmit The event occurs when a form is submitted.
onreset The event occurs when a form is reset.
onselect The event occurs when a user selects some text.