How to reload a browser source? (4.9.1)

[AimbotNooby]

Hey I'm a really bad coder and wonder how to reload a browser source in version 4.9.1 from a browser.

So far I managed it to switch scenes like so:

(Javascript on website)

const obs = new OBSWebSocket();
obs.connect({address: '192.168.178.86:4455'}); 
obs.on('ConnectionOpened', () => {
      console.log("mit OBS Websocket verbunden");
         });
function szeneÄndern(scenename) {
      obs.send('SetCurrentScene', {'scene-name': scenename});
        };

Thanks for your help!