MessagePort.close()

The close() method of the MessagePort interface disconnects the port, so it is no longer active. This stops the flow of messages to that port.

Note: This feature is available in Web Workers.

Syntax

port.close()

Returns

Void.

Parameters

None.

Example

In the following code block, you can see a handleMessage handler function, run when a message is sent back to this document using EventTarget.addEventListener.

channel.port1.addEventListener('message', handleMessage, false);
function handleMessage(e) {
  para.innerHTML = e.data;
  textInput.value = '';
}

channel.port1.start();

You could stop messages being sent at any time using

channel.port1.close();

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'close()' in that specification.
Living Standard

Browser compatibility

BCD tables only load in the browser

See also