onopen

Summary

An event listener to be called when the WebSocket connection’s readyState changes to OPEN. Receives an event named "open".

Property of apis/websocket/WebSocketapis/websocket/WebSocket

Syntax

Note: This property is read-only.

var result = element.onopen;

Return Value

Returns an object of type

EventHandler

Examples

socket.onopen = function(event) {
  // handle open event
};

Event handlers can also be created using the addEventListener() method.

socket.addEventListener("open", function(event) {
  // handle open event
});

Related specifications

W3C WebSocket Specification

W3C Candidate Recommendation

Attributions

• Microsoft Developer Network: Windows Internet Explorer API reference Article