SerialPort: writable property
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Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The writable read-only property of the SerialPort interface returns a WritableStream for sending data to the device connected to the port. Chunks written to this stream must be instances of ArrayBuffer, TypedArray, or DataView. This property is non-null as long as the port is open and has not encountered a fatal error.
Value
Examples
The following example shows how to write a string to a port. A TextEncoder converts the string to a Uint8Array before transmission.
js
const encoder = new TextEncoder();
const writer = port.writable.getWriter();
await writer.write(encoder.encode("PING"));
writer.releaseLock();
Specifications
| Specification |
|---|
| Web Serial API # dom-serialport-writable |
Browser compatibility
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