Over the last eight years of building complex React dashboards for US-based fintech and healthcare firms, I have often been asked to implement a feature that allows a specific part of an application to open in a separate browser tab.
While it sounds like a simple task, React is designed for Single Page Applications (SPAs), meaning it usually wants to keep everything inside one window.
However, there are times when your users, perhaps a loan officer reviewing a credit report or a doctor looking at a patient’s chart, need to see a specific component side-by-side with the main app.
In this tutorial, I will show you exactly how to open a React component in a new tab using three different, battle-tested methods.
Why You Might Need to Open Components Individually
In my experience working with enterprise software, the “Hello World” examples don’t cut it. Real-world users often have multi-monitor setups.
Imagine you are building a Real Estate Management platform for a firm in New York. The agent might want to keep the “Property Listings” open on one screen and open a “Financial Calculator” component in a new tab on another.
Providing this flexibility improves the user experience significantly by preventing constant back-and-forth navigation.
Method 1: Use React Router with window.open
This is the most common and robust method. We define a specific route for the component and then use the standard JavaScript window.open method to navigate to that path.
In this example, let’s build a US Sales Tax Calculator that opens in a new window.
The Full Code Implementation
First, ensure you have react-router-dom installed.
App.js
import React from 'react';
import { BrowserRouter as Router, Routes, Route, Link } from 'react-router-dom';
import SalesTaxCalculator from './components/SalesTaxCalculator';
import Dashboard from './components/Dashboard';
function App() {
return (
<Router>
<Routes>
<Route path="/" element={<Dashboard />} />
<Route path="/tax-calculator" element={<SalesTaxCalculator />} />
</Routes>
</Router>
);
}
export default App;components/Dashboard.js
import React from 'react';
const Dashboard = () => {
const openCalculator = () => {
// We use window.open with the route defined in our Router
window.open('/tax-calculator', '_blank', 'noopener,noreferrer');
};
return (
<div style={{ padding: '40px', fontFamily: 'Arial' }}>
<h1>Chicago Real Estate Management Portal</h1>
<p>Welcome to the main dashboard. You can manage your listings here.</p>
<button
onClick={openCalculator}
style={{
padding: '12px 24px',
backgroundColor: '#007bff',
color: '#fff',
border: 'none',
borderRadius: '5px',
cursor: 'pointer'
}}
>
Open Sales Tax Calculator in New Tab
</button>
</div>
);
};
export default Dashboard;components/SalesTaxCalculator.js
import React, { useState } from 'react';
const SalesTaxCalculator = () => {
const [amount, setAmount] = useState(0);
const taxRate = 0.1025; // Example Chicago Sales Tax (10.25%)
return (
<div style={{ padding: '50px', textAlign: 'center', backgroundColor: '#f4f7f6', minHeight: '100vh' }}>
<h2>State & Local Sales Tax Calculator</h2>
<p>Current Region: <strong>Cook County, Illinois</strong></p>
<div style={{ marginTop: '20px' }}>
<label>Enter Transaction Amount ($): </label>
<input
type="number"
value={amount}
onChange={(e) => setAmount(e.target.value)}
style={{ padding: '8px', marginLeft: '10px' }}
/>
</div>
<div style={{ marginTop: '30px', fontSize: '20px' }}>
<p>Base Amount: ${amount}</p>
<p>Estimated Tax (10.25%): ${(amount * taxRate).toFixed(2)}</p>
<h3>Total: ${(parseFloat(amount) + (amount * taxRate)).toFixed(2)}</h3>
</div>
</div>
);
};
export default SalesTaxCalculator;I executed the above example code and added the screenshot below.
I usually go with this method because it preserves the React lifecycle and allows the new tab to be a fully independent instance of the app. It’s clean and works perfectly with SEO if you want that specific component to be indexable.
Method 2: Use React Portals (Advanced)
Sometimes, you don’t want to create a new route. You might want to “inject” a component into a new window while keeping it connected to the main application’s state.
This is more complex but very powerful for tools like “Live Preview” editors.
The Full Code Implementation
NewWindowPortal.js
import React, { useEffect, useState } from 'react';
import ReactDOM from 'react-dom';
const NewWindowPortal = ({ children, closeWindowPortal }) => {
const [containerEl] = useState(document.createElement('div'));
let externalWindow = null;
useEffect(() => {
// Open a new blank window
externalWindow = window.open('', '', 'width=600,height=400,left=200,top=200');
// Append the container div to the new window body
externalWindow.document.body.appendChild(containerEl);
// Add some basic US-standard styling to the new window
const style = externalWindow.document.createElement('style');
style.innerHTML = `body { font-family: "Segoe UI", Roboto, sans-serif; padding: 20px; }`;
externalWindow.document.head.appendChild(style);
externalWindow.addEventListener('beforeunload', () => {
closeWindowPortal();
});
return () => {
externalWindow.close();
};
}, []);
return ReactDOM.createPortal(children, containerEl);
};
export default NewWindowPortal;MainPage.js
import React, { useState } from 'react';
import NewWindowPortal from './NewWindowPortal';
const MainPage = () => {
const [showPortal, setShowPortal] = useState(false);
const [note, setNote] = useState("Internal Memo: Reviewing Florida Property Taxes.");
return (
<div style={{ padding: '30px' }}>
<h1>Content Creator Dashboard</h1>
<textarea
value={note}
onChange={(e) => setNote(e.target.value)}
style={{ width: '100%', height: '100px' }}
/>
<button onClick={() => setShowPortal(!showPortal)}>
{showPortal ? 'Close Preview' : 'Open Preview in New Window'}
</button>
{showPortal && (
<NewWindowPortal closeWindowPortal={() => setShowPortal(false)}>
<h1>Live Memo Preview</h1>
<p>This window is controlled by the main app state!</p>
<div style={{ border: '1px solid #ccc', padding: '10px' }}>
{note}
</div>
<button onClick={() => window.print()}>Print for Records</button>
</NewWindowPortal>
)}
</div>
);
};
export default MainPage;I executed the above example code and added the screenshot below.
I used this method once for a client in a US law firm. They needed to type a legal document and see the formatted preview on a second monitor instantly. Since it’s a Portal, the state stays synced without needing a database or local storage.
Method 3: The Traditional target=”_blank” with Links
If your component is already linked to a URL in your application, you don’t need fancy JavaScript logic. You can use a standard React Router Link or an anchor tag.
The Full Code Implementation
Navigation.js
import React from 'react';
import { Link } from 'react-router-dom';
const Navigation = () => {
return (
<nav style={{ padding: '20px', background: '#232f3e', color: '#fff' }}>
<ul style={{ listStyle: 'none', display: 'flex', gap: '20px' }}>
<li>
<Link to="/" style={{ color: '#fff' }}>Home</Link>
</li>
<li>
{/* Opening a help document in a new tab */}
<Link
to="/help/irs-form-guidelines"
target="_blank"
rel="noopener noreferrer"
style={{ color: '#fff' }}
>
IRS Form Help (New Tab)
</Link>
</li>
</ul>
</nav>
);
};
export default Navigation;Whenever I use target=”_blank”, I always add rel=”noopener noreferrer”. This is a standard security practice in the US tech industry to prevent “tab-nabbing,” where the new tab could potentially control the parent window.
Which Method Should You Use?
Choosing the right method depends on your specific use case.
If you are simply navigating to a page that already exists, Method 3 is the cleanest and best for accessibility.
If you need to trigger the opening via a button click after performing some logic (like saving a draft), Method 1 is the industry standard.
If you are building a highly interactive tool where the two windows must talk to each other in real-time, Method 2 is your best bet.
Common Challenges and Solutions
Handle Pop-up Blockers
Most modern browsers in the US (Chrome, Safari, Edge) will block window.open if it is not triggered by a direct user action (like a click).
Never try to open a new tab inside a setTimeout or an async fetch call without user interaction, or the browser will likely kill the pop-up.
Pass Data Between Tabs
If you use Method 1 and need to pass data, I recommend using URL Parameters or the Web Storage API (localStorage).
For example, you can save a “Session ID” in localStorage in the main tab and read it when the component mounts in the new tab.
In this article, I have shown you how to open a React component in a new tab using various methods. Each approach has its own benefits depending on the project requirements.
I have used these techniques in numerous professional projects to improve workflow efficiency for users. I hope this tutorial helps you build better, more flexible React applications.
You may read:
- React Mosaic Component
- How to Force Update a React Functional Component
- How to Test Function Calls in React Components
- How to Check if a Component is Rendered in React
I am Bijay Kumar, a Microsoft MVP in SharePoint. Apart from SharePoint, I started working on Python, Machine learning, and artificial intelligence for the last 5 years. During this time I got expertise in various Python libraries also like Tkinter, Pandas, NumPy, Turtle, Django, Matplotlib, Tensorflow, Scipy, Scikit-Learn, etc… for various clients in the United States, Canada, the United Kingdom, Australia, New Zealand, etc. Check out my profile.
