Is there any way to use the Realm with web ?
Can we use the great Realm features like Reactive architecture ?
I referred the docs and i see that it only has cross-platform support(Mobile)
Realm does not offer a JS SDK specifically for the browser. Instead, realm-js is designed for use with React Native on mobile devices or with Node for server or desktop (Electron) use-cases. The reason for this is that opening up a Realm database requires file system access, which is not possible in a web browser.
However, this doesn't mean that you cannot use Realm within a web architecture. Since Realm offers high performance, it is a great candidate to use as the data layer within a web server. For example, you could use realm-js within an Express server providing REST APIs for a web client. This can be quite powerful especially at scale, by taking advantage of a synchronized Realm to act as a data grid across many servers (see this blog post for more info).