SocketTask.onOpen

解釋：監(jiān)聽 WebSocket 連接打開事件。

方法參數(shù)

Function callback

示例 

在開發(fā)者工具中打開

圖片示例

代碼示例

<button type="primary" bindtap="socketTaskOnOpen">socketTask.onOpen</button>

Page({
    /* eslint-enable */
    socketTaskOnOpen() {
        const socketTask = swan.connectSocket({
            url: 'wss://echo.websocket.org',
            success: res => {
                console.log('connectSocket success', res.socketTaskId)
            },
            fail: err => {
                console.log('connectSocket fail', err);
            }
        });
        socketTask.onOpen(res => {
            console.log('socketTask.onOpen success', res);
            swan.showModal({
                content: '監(jiān)聽打開事件成功'
            });
        });
    }
});