This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The PushMessageData interface of the Push API provides methods which let you retrieve the push data sent by a server in various formats.
Unlike the similar methods in the Fetch API, which only allow the method to be invoked once, these methods can be called multiple times.
Properties
None.
Methods
PushMessageData.arrayBuffer()- Extracts the data as an
ArrayBufferobject. PushMessageData.blob()- Extracts the data as a
Blobobject. PushMessageData.json()- Extracts the data as a JSON object.
PushMessageData.text()- Extracts the data as a plain text string.
Examples
self.addEventListener('push', function(event) {
var obj = event.data.json();
if(obj.action === 'subscribe' || obj.action === 'unsubscribe') {
fireNotification(obj, event);
port.postMessage(obj);
} else if(obj.action === 'init' || obj.action === 'chatMsg') {
port.postMessage(obj);
}
});
Specifications
| Specification | Status | Comment |
|---|---|---|
| Push API The definition of 'PushMessageData' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 50.0 | 44.0 (44.0)[1] | No support | No support | No support |
| Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|---|
| Basic support | No support | No support | 48.0 (48)[2] | No support | No support | No support | No support | 50.0 |
- [1] Push (and Service Workers) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)
- [2] Push has been enabled by default on Firefox for Android version 48.