HTML – ondrop Event
The ondrop event fires when a draggable element or text selection is dropped on a valid drop target via drag and drop.
HTML – ondurationchange Event
The ondurationchange event fires when the duration of the audio/video is changed.
HTML – onemptied Event
The onemptied event fires when the media encounters some fatal error, the file becomes unavailable, or the media playlist is empty.
HTML – onerror Event
The onerror event fires when an error occurs while loading an external file like an <img>, <object>, <link>, or <script>.
HTML – onfocus Event
The onfocus event fires when a form field gains focus when as user clicks into it. The onfocus event is the opposite of the onblur event.
HTML – onfocusin Event
The onfocusin event fires when a form field is about to gain focus as the user clicks into it. The onfocusin event is the opposite of the onfocusout event.
HTML – onfocusout Event
The onfocusout event fires when a form field is about to lose focus as the user clicks out of it. The onfocusout event is the opposite of the onfocusin event.
HTML – onhashchange Event
The onhashchange event fires when there has been a change to the anchor part of the page’s URL (the anchor begins with the # symbol).
HTML – oninput Event
The oninput event fires when the value of an HTML <input> or <textarea> element is first input or is changed.
HTML – oninvalid Event
The oninvalid event fires when an <input> element is invalid (e.g., if the required attribute is set and the field is empty).
HTML – onkeypress Event
The onkeypress event fires when the user presses a key on the keyboard, but is not fired for all keys (e.g. ALT, CTRL, SHIFT, ESC).
HTML – onload Event
The onload event fires when an element has been loaded, and is often used to run a script once the webpage has completely loaded all content.
HTML – onloadeddata Event
The onloadeddata event fires when data for the current frame is loaded, but not enough data to play the next frame.
HTML – onloadedmetadata Event
The onloadedmetadata event fires when meta data for the specified audio/video has finished loading.
HTML – onloadstart Event
The onloadstart event fires when the browser starts looking for the specified audio/video.
HTML – onmessage Event
The onmessage event fires when an HTML element has received a message through an event source.
HTML – onmousedown Event
The onmousedown event fires when the user presses down the mouse button while over an HTML element.