Element: error event

The error event is fired on an Element object when a resource failed to load, or can't be used. For example, if a script has an execution error or an image can't be found or is invalid.

Example

Generate Image Error

Window: load event

The load event is fired when the whole page has loaded, including all dependent resources such as stylesheets and images. This is in contrast to DOMContentLoaded, which is fired as soon as the page DOM has been loaded, without waiting for resources to finish loading.

Example