PushMessageData
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.
Messages received through the Push API are sent encrypted by push services and then automatically decrypted by browsers before they are made accessible through the methods of the PushMessageData
interface.
Instance properties
None.
Instance methods
PushMessageData.arrayBuffer()
-
Extracts the data as an
ArrayBuffer
object. PushMessageData.blob()
-
Extracts the data as a
Blob
object. PushMessageData.json()
-
Extracts the data as a JSON object.
PushMessageData.text()
-
Extracts the data as a plain text string.
Examples
js
self.addEventListener("push", (event) => {
const 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 |
---|
Push API # pushmessagedata-interface |
Browser compatibility
BCD tables only load in the browser