WebSocket: binaryType property
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The WebSocket.binaryType
property controls the type of
binary data being received over the WebSocket connection.
Value
A string:
"blob"
-
Use
Blob
objects for binary data. This is the default value. "arraybuffer"
-
Use
ArrayBuffer
objects for binary data.
Examples
js
// Create WebSocket connection.
const socket = new WebSocket("ws://localhost:8080");
// Change binary type from "blob" to "arraybuffer"
socket.binaryType = "arraybuffer";
// Listen for messages
socket.addEventListener("message", (event) => {
if (event.data instanceof ArrayBuffer) {
// binary frame
const view = new DataView(event.data);
console.log(view.getInt32(0));
} else {
// text frame
console.log(event.data);
}
});
Specifications
Specification |
---|
WebSockets Standard # ref-for-dom-websocket-binarytype① |
Browser compatibility
BCD tables only load in the browser