The error
event is fired on a Window
object when a resource failed to load or couldn't be used — for example if a script has an execution error.
Bubbles | No |
---|---|
Cancelable | No |
Interface | Event or UIEvent |
Event handler property | onerror |
The event object is a UIEvent
instance if it was generated from a user interface element, or an Event
instance otherwise.
Examples
Live example
HTML
<div class="controls"> <button id="script-error" type="button">Generate script error</button> <img class="bad-img" /> </div> <div class="event-log"> <label>Event log:</label> <textarea readonly class="event-log-contents" rows="8" cols="30"></textarea> </div>
CSS
body { display: grid; grid-template-areas: "control log"; } .controls { grid-area: control; display: flex; align-items: center; justify-content: center; } .event-log { grid-area: log; } .event-log-contents { resize: none; } label, button { display: block; } button { height: 2rem; margin: .5rem; } img { width: 0; height: 0; }
JS
const log = document.querySelector('.event-log-contents'); window.addEventListener('error', (event) => { log.textContent = log.textContent + `${event.type}: ${event.message}\n`; console.log(event) }); const scriptError = document.querySelector('#script-error'); scriptError.addEventListener('click', () => { const badCode = 'const s;'; eval(badCode); });
Result
Specifications
Specification | Status |
---|---|
UI Events | Working Draft |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
error event | Chrome Full support Yes | Edge Full support ≤79 | Firefox Full support Yes | IE ? | Opera ? | Safari ? | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android ? | Safari iOS ? | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown
See also
- This event on
Element
targets:error
event