Ytukyg

    websocketstart()

    {

        exampleSocket = new WebSocket('ws://127.0.0.1:8000');

        exampleSocket.onopen = function() {

            // alert('handshake successfully established. May send data now...');

            // exampleSocket.send('hello!!!')

        };

        exampleSocket.onmessage = function(event) {

            let result = JSON.parse(event.data);

            if(result.error == false)

            {

                console.log("ERROR : " + result.parent.message);

                alert('error');

                return;

            }

            this.wantcallfunction(); //<---- SCRIPT438: Object doesn't support property or method 'wantcallfunction'

            return;

        };

        exampleSocket.onclose = function() {

            alert('connection closed');

        };

    }



    wantcallfunction()

    {



    }

this.wantcallfunction(); //<---- SCRIPT438: Object doesn't support property or method 'wantcallfunction'

Is there any other way to call the function from within onmessage?

Use arrow functions so you keep context of this as the class.

Change

exampleSocket.onmessage = function(event) {

    // `this` is not the class

To

exampleSocket.onmessage = (event) => {

    // `this` is  the class

static instance : MySocketTest 



MySocketTest.instance = this;



exampleSocket.onmessage = function(event) {

MySocketTest.instance.wantcallfunction();

Resolved.

There is no error, but I do not know if this is correct.