The message
event is fired on a Window
object when the window receives a message, for example from a call to window.postMessage()
from another browsing context.
Bubbles | No |
---|---|
Cancelable | No |
Interface | MessageEvent |
Event handler property | onmessage |
Examples
Suppose a script sends a message to a different browsing context, such as another <iframe>
, using code like this:
const targetFrame = window.top.frames[1]; const targetOrigin = 'https://example.org'; const windowMessageButton = document.querySelector('#window-message'); windowMessageButton.addEventListener('click', () => { targetFrame.postMessage('hello there', targetOrigin); });
The receiver can listen for the message using addEventListener()
with code like this:
window.addEventListener('message', (event) => { console.log(`Received message: ${event.data}`); });
Alternatively the listener could use the onmessage
event handler property:
window.onmessage = (event) => { console.log(`Received message: ${event.data}`); };
Specifications
Specification | Status |
---|---|
HTML Living Standard | Living Standard |
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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
message event | Chrome Full support 60 | Edge Full support ≤79 | Firefox ? | IE ? | Opera Full support 47 | Safari ? | WebView Android Full support 60 | Chrome Android Full support 60 | Firefox Android ? | Opera Android Full support 47 | Safari iOS ? | Samsung Internet Android Full support 8.0 |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown
See also
- Related events:
messageerror
. window.postMessage()
.