WebSocket.onerror

The WebSocket interface's onerror event handler property is a function which gets called when an error occurs on the WebSocket.

You can also add an error event handler using addEventListener().

Syntax

webSocket.onerror = eventHandler;

Value

A function or EventHandler which is executed whenever an error event occurs on the WebSocket connection.

Example

webSocket.onerror = function(event) {
  console.error("WebSocket error observed:", event);
};

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'WebSocket: onerror' in that specification.
Living Standard Initial definition

Browser compatibility

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