Using Node.js API on my react-native frontend - node.js

I am new to react-native. I am using an api that basically returns json data, I am able to easily use json on my frontend but I am stuck because I don't know how to redirect to my other frontend file using same api but different route.

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How to post JSON data from NodeJS to Django?

The architecture of our app uses NodeJS and Django together.
I need to post a JSON data from NodeJS to Django without receiving any request before that from Django. Because, there is a function in NodeJS that generates and returns JSON data such that whenever this data returned, NodeJS must post it to Django.
I don't know any thing about that and have not any idea for that.
What should I do? What APIs/modules do I need to use and how should I work with NodeJS and Django to fulfill it?
api can be created in django with necessary permissions & authentication, then can continue with function call in nodejs (any medium to trigger code to submit data in django api).

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I already built the ui with Vuejs, then I created the api with nodejs/express and tested it with ejs.
I’m having issues with the authentication system using my vuejs ui, I can’t seem to call the api and persist form data properly.
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consume API from node JS

How would I consume any API from my backend in node JS.
Let's say that I want to make only use of a few routes but that they do not hit the API from the frontend but that the response is made by the backend that previously has already developed that query logic.

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I have an existing backend with a REST API written using node.js/express.
I can call urls e.g. /getallhouses and get the corresponding JSON object.
Using a mobile app, this is rather straightforward as you just call the REST API and process the data.
As I need to also add a webapp e.g. with React.js, it seems more murky.
What is the best way of implementing this webapp strategy?
Creating a stand-alone react.js app which will be called by the user first and then is using the REST API like a mobile app and hosting that react.js app on a different server?
Or is it better to start from the already existing express/node backend and serving the initial index.html file by
res.sendFile(path.join(__dirname + 'views/index.html'));
and putting all react.js related code into views and letting the backend serving the required react.js app to the user?
The best way is probably that you create a react app with redux and compile it to a bundle with something like webpack. Then you could host your page completely static.

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