HTML Reference

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 Reference

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 Reference

HTML – onerror Event

The onerror event fires when an error occurs while loading an external file like an img, object, link, or script.

HTML Reference

HTML – onfocus Event

The onfocus event fires when a form field gains focus as the user clicks into it. The onfocus event is the opposite of the onblur event.

HTML Reference

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 Reference

HTML – onfocusout Event

The onfocusout event fires when a form field is about to lose focus as the user clicks out of it. It’s the opposite of the onfocusin event.

HTML Reference

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 Reference

HTML – oninput Event

The oninput event fires when the value of an HTML input or textarea element is first input or is changed.

HTML Reference

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 Reference

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 Reference

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 Reference

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 Reference

HTML – onmessage Event

The onmessage event fires when an HTML element has received a message through an event source.

HTML Reference

HTML – onmousedown Event

The onmousedown event fires when the user presses down the mouse button while over an HTML element.

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