In web development, most React components begin life focused and free of clutter. As tracking layers, feature updates, and shifting requirements pile on, they often become bloated and brittle.
Analytics is frequently where things start to slip.
A few inline event handlers turn into scattered tracking logic. Tags multiply. Naming drifts. Updates require rewrites, and data integrity suffers.
But there’s a better way.
When components are designed to scale—and to support analytics from the beginning—they adapt more easily. They support collaboration across design, development, and data without causing fragmentation.
This guide draws on real-world lessons learned through direct client work and outlines how to build React components that remain clean, extensible, and measurable as they evolve.
React was built around reusable components. But reusable isn’t the same as adaptable. Without anticipating change, components become rigid and difficult to extend.
In a growing app, this rigidity creates friction:
When every request triggers a rewrite or duplication, momentum slows. Errors multiply. Cross-team collaboration breaks down.
Extensibility solves this. In React, that means designing components that can grow without breaking what already works.
When extensibility is built in, components evolve smoothly. They absorb shifting requirements with minimal disruption. Analytics needs can be met consistently, without brittle add-ons.
This foundation leads to more intentional and sustainable architecture.
There are two common approaches to implementing analytics in React components: passing tracking logic via props or applying data-*
attributes to the markup. Each method has implications for maintainability.
This approach often feels natural in small or isolated components. You might pass an inline function like onClick={() => trackClick()}
to capture events.
It works… for a while.
As scale increases, this method entangles UI and tracking logic. Event handlers spread across files. Reuse becomes difficult. Maintenance gets messy.
This approach avoids embedding logic directly in the UI. Instead, standardized data-*
attributes can be targeted by tools like Google Tag Manager or PostHog.
Example of an annotated component:
<button
data-button-type="CTA"
data-button-action="Start Free Trial"
>
Start Free Trial
</button>
Used consistently, attributes like data-link-type
or data-product-name
help maintain structure as tracking requirements shift.
Inline tracking may seem quick. Just drop in an onClick
and call your function:
<button onClick={() => trackButtonClick('Signup CTA')}>
Sign Up
</button>
But this approach creates long-term issues:
Instead, centralize tracking in shared utilities or hooks. This keeps components focused and reduces duplication.
Moving beyond inline tracking means adopting scalable patterns that separate concerns and maintain clean architecture. The two patterns below help centralize event logic without coupling it to the UI.
Encapsulate your tracking logic in a hook. This promotes reuse and simplifies your components.
function useEventLogger() {
return (event) => {
window.eventQueue = window.eventQueue || [];
window.eventQueue.push({
eventType: 'click',
eventDetails: {
label: event.target.dataset.eventLabel,
},
});
};
}
Use inside a component:
const logEvent = useEventLogger();
return (
<button
data-event-lable="Signup CTA"
onClick={logEvent}
>
Sign Up
</button>
);
Note: For this to work, the tracked element must include a data-event-label
attribute.
For broader tracking needs, like capturing clicks sitewide, a global listener offers a clean solution.
document.addEventListener('click', (e) => {
const category = e.target.dataset.eventCategory;
const action = e.target.dataset.eventAction;
const label = e.target.dataset.eventLabel;
if (category && action) {
window.eventQueue.push({
category,
action,
label,
});
}
});
This eliminates the need to inject logic into each component.
Both methods support scalable analytics with clear boundaries between structure and behavior.
At BrainDo, we apply these patterns across client projects with varying tech stacks and tracking setups. Centralized event logic and structured attributes provide clear advantages:
Consider a multi-page product experience built on a shared component library. Reusable tracking patterns across the full set of interactive elements ensure reliable event handling and easier audits. The result: faster QA cycles and greater trust in the data.
We use this model in our development work to keep analytics scalable and testable from day one.
Effective analytics aren’t bolted on. They’re part of the foundation. In React development, success depends on thoughtful structure, extensible components, and integrated tracking.
With structured attributes, shared hooks, and centralized logic, teams can maintain measurement systems that scale with their products and avoid the need for repeated rewrites.
Design once, build clearly, and keep your measurement clean for the long term.
Looking to streamline event tracking in your React projects? BrainDo helps development and analytics teams build scalable components with measurement in mind. Let’s talk.