Public methods in javascript OOP

Question

I want to make a javascript class with methods which I can call within the class as well as outside of the class. I want to make a "public" method, if you will. I want `getTextAreaElement` and `appendTextArea` to be such methods. I've shown a snippet of best code I could come up with so far. I've also tried defining the methods as prototypes as well as within the class (`this.func = ...`). But that only allowed me to call the method outside (`new Socket().appendTextArea("osgjr89");`) but NOT within the class itself! The code snippet below shows the exact opposite implementation where I can't call the method outside of the class but can call it within. Error: Uncaught TypeError: Object #Socket has no method 'appendTextArea' socket.js: ``` function Socket() { var socket; var canvas = document.getElementById('c'); var context = canvas.getContext("2d"); if (window.WebSocket) { socket = new WebSocket("ws://localhost:9012/websocket"); socket.binaryType = 'arraybuffer'; socket.onopen = onope…

Accepted Answer

All public methods must be declared as properties, not variables/functions. So, you have to change stuff like this:

```
function getTextAreaElement() {
    return document.getElementById('responseText');
}
```

into

```
this.getTextAreaElement = function() {
    return document.getElementById('responseText');
}
```

Public methods in javascript OOP

Solution

Problem