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HTML onerror Event Attributes
The onerrorevent is a powerful feature in HTML and JavaScript that helps developers manage errors gracefully. It is triggered whenever an error occurs during the loading or execution of resources such as scripts, images, or other external assets, or when a runtime error happens in the JavaScript code. This event is essential for debugging and improving the user experience by allowing error tracking and fallback mechanisms.
Window Event Attributes
Attributes | Description |
---|---|
onafterprint | Fires after the document has started printing or the print dialog box has been closed. |
onbeforeprint | Fires before the document is about to be printed. |
onbeforeunload | Fires when the document is about to be unloaded. |
onerror | Fires when an error occurs during loading of an external file (e.g., images or scripts). |
onhashchange | Fires when the anchor part of the URL has changed. |
onload | Fires when the page has finished loading. |
onmessage | Fires when a message is received through an event source (e.g., WebSocket or iframe). |
onoffline | Fires when the browser starts working offline. |
ononline | Fires when the browser starts working online. |
onpagehide | Fires when the user navigates away from a webpage. |
onpageshow | Fires when the user navigates to a webpage. |
onpopstate | Fires when the active history entry changes (e.g., when the user clicks the back or forward button). |
onresize | Fires when the browser window is resized. |
onstorage | Fires when a Web Storage area is updated (e.g., localStorage or sessionStorage). |
onunload | Fires once a page is unloaded (or the browser window is closed). |
HTML Attributes | Global Attributes | Event Attributes |
---|---|---|
To view the full list | To view the full list | To view the full list |
elements | |||||
---|---|---|---|---|---|
onerror | Yes | Yes | Yes | Yes | Yes |
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