Using Ext JS Components Inside React with ReExt: A Practical Approach

Modern frontend development often involves choosing between frameworks.

But what if you didn’t have to choose?

What if you could combine the strengths of both?

That is exactly what ReExt enables — integrating Sencha Ext JS components directly into React applications without rewriting existing code.

The Problem Many Teams Face

As projects evolve, teams often face a common challenge:

• legacy applications built with older frameworks
• new projects moving toward React
• complex UI components that are difficult to rebuild

Rewriting everything from scratch is time-consuming and risky.

This is where integration becomes valuable.

What Is ReExt?

ReExt acts as a bridge between React and Ext JS.

It allows developers to:

• use Ext JS components as React components
• integrate complex UI elements into React apps
• avoid rewriting existing UI logic

This makes it especially useful for applications that already rely on Ext JS’s powerful component system.

How ReExt Works

ReExt wraps Ext JS components and exposes them as React-compatible elements.

This allows developers to:

• use familiar React patterns
• manage state using React hooks
• render Ext JS components seamlessly

Behind the scenes, ReExt handles synchronization between React and Ext JS, ensuring smooth interaction without manual complexity.

Key Benefits

1. Reuse Existing Components

Instead of rebuilding grids, charts, and forms, teams can reuse existing Ext JS components.

1. Faster Development

Pre-built components reduce development time significantly.

1. Handle Complex Data Easily

Ext JS components are designed for data-heavy applications, making them ideal for dashboards and enterprise tools.

1. Smooth Migration Path

Teams can gradually transition from legacy systems to React without a full rewrite.

When Should You Use ReExt?

ReExt is a good fit when:

• you have an existing Ext JS application
• your app includes complex UI components
• you want to adopt React incrementally
• rebuilding everything is not feasible Performance Considerations

When using ReExt, it is important to:

• avoid overloading the UI with too many heavy components
• use lazy loading where possible
• rely on React’s state management for synchronization

This ensures optimal performance in large applications.

Real-World Use Case

Many enterprise applications involve:

• large datasets
• complex dashboards
• multi-user workflows

In these cases, combining React’s flexibility with Ext JS’s component strength can provide a balanced approach.

Final Thoughts

Frontend development does not always have to be about choosing one framework over another.

Sometimes, the best solution is integration.

ReExt allows developers to combine:

React’s flexibility
Ext JS’s powerful Javascript ui components

Without sacrificing performance or productivity.

And in enterprise environments, that flexibility can make a significant difference.