Javascript support android studio

Question

I have a project on the way but I can't seem to add javascript support to this method, any insight? I didn't include the line in the code because I tried it in every way possible, and even when it wouldn't error it would still not load Js support.

@Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container, false);

            rootView.setTag(getArguments().getInt(ID)); //define the rootView with an id Tab in order to be accessed later from inside the menu button

            swipeRefreshWeb = rootView.findViewById(R.id.swipeRefreshWeb);
            swipeRefreshWeb.setOnRefreshListener(this);

            //GET THE WEBVIEW FROM THE XML LAYOUT
            webView = rootView.findViewById(R.id.section_web_view);
            webView.setWebViewClient(new WebViewClient() { //NEEDED TO CREATE IN ORDER TO OPEN SOME WEBPAGES INSIDE THE APP AND NOT BY OPENING THE CHROME APP
                public void onReceivedError(WebView view, int errorCode, String description, String   failingUrl) {
                    Toast.makeText(getContext(), description, Toast.LENGTH_SHORT).show();
                }
            });
            webView.loadUrl(getArguments().getString(URL)); //load the url

            rootView.findViewById(R.id.btnWebBack).setOnClickListener(new View.OnClickListener() { //Define the Back click button
                @Override
                public void onClick(View view) {
                    webView.goBack();  //go back when the back button is clicked
                }
            });
            return rootView;
        }