Access React Object from within page JS?

问题

I have a ReactVr object which I am rendering with the code below. After React is initialised I am periodically receiving server updates which I want to pass into React as props, how can I do this? Can props in the React object be set from my "normal" JS?

ReactVR.init(
    './build/index.bundle.js',
    document.body,
    // third argument is a map of initialization options
    {
      initialProps: {
        source: 'world.json',
         userType: "typ1"
        },
      cursorVisibility: 'visible'
    }
  );

Edit: Server updates are coming via a Websockets connection, but from within React the messages are not being received, only in the "normal" JS.

In "normal" JS this returns data from the server, if I use the same within React the connection gets opened but the message is never received. However messages can be sent from within React.

socket.addEventListener('message', function (event) {

        console.log('Message from server ', event.data);

  });

回答1:

You should be able to create a native module to facilitate this functionality.

Check out the documentation around this here: https://facebook.github.io/react-vr/docs/native-modules.html

Once you have created your module and linked it up in client.js you can import it into your components and use it as a communication layer between react vr and your sockets implementation.

To do this, within your init function in client.js add

const socketsModule = new SocketsModule();

then either in a new import or in that file itself you can add:

export class SocketsModule extends Module {
  constructor() {
    super('SocketsModule');
  }

  init() {
  }

  customMethod() {
    // Do fun stuff here
  }

}

Then inside your react VR component you wish to call these methods you first include this new module:

const SocketsModule= NativeModules.SocketsModule;

Then you can access its methods from within that component:

SocketsModule.customMethod();

来源：https://stackoverflow.com/questions/47656179/access-react-object-from-within-page-js

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javascript

reactjs

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