Understanding AJAX Filter Behavior and User Navigation Expectations in WordPress Websites
When developing custom WordPress sites, especially for clients seeking tailored solutions, it’s crucial to consider user experience nuances—such as how AJAX-powered filters interact with browser navigation.
Recently, I crafted a bespoke WordPress site for a freelance designer, opting to implement custom-built AJAX category filters due to the unavailability of suitable plugins. While the filters function correctly, I encountered an issue: when users click on a post and then use the browser’s back button to return, the filters reset, losing their previous selections.
This behavior raises an important question—should I have anticipated that filters would maintain their state during navigation? Typically, users expect filters to preserve their choices when navigating back, providing a seamless browsing experience. Achieving this involves additional complexity, possibly requiring session management or URL parameter handling to retain filter states.
The client hasn’t raised this concern, but addressing it would require additional development time—roughly a couple of days—and I’ve already agreed on a favorable project rate. Given this context, I’m weighing whether to offer to implement persistent filter states as an extra service or to leave the current setup unchanged.
In general, when building interactive features like AJAX filters, it’s advisable to clarify with clients whether maintaining filter states during navigation is a priority. If so, incorporating techniques such as URL parameters or local storage can enhance user experience, though they do add complexity.
Ultimately, client communication and managing expectations are key. If preserving filter states aligns with the site’s goals and improves usability, offering it as an optional enhancement can be worthwhile—especially if it can be delivered efficiently. Otherwise, it’s acceptable to keep the implementation simple, explaining the current behavior and its implications.
Conclusion
While custom solutions provide flexibility, consider the broader user experience, especially concerning navigation and filter persistence. Clear dialogue with your clients about such features ensures the delivered website aligns with their expectations and end-user needs.

