Querynest — Free Typed Filter Builder UI Kit
Querynest lets a user express a condition more precisely than a single search box. Combine rules within groups, combine groups with AND or OR and inspect exactly which fictional accounts match. Field types determine the operators and controls, and an invalid rule cannot silently replace a working query. The JSON export and importer use the same validation, so a downloaded condition can be brought back into the builder. This component is useful for a data explorer or reporting interface; adapt the allowlist and enforce your own access controls when applying conditions to production data.
Key features
- Up to four AND/OR groups and eight typed rules per group
- Text, enum, numeric, calendar-date and boolean controls
- Operator allowlists determined by the selected field type
- Numeric between ranges and real-date validation
- Live preview over twelve fictional accounts without SQL or eval
- Invalid drafts preserve last valid results and disable export
- Validated, size-limited Querynest JSON import and export
- Matching-account CSV export and two working query examples
- Persisted local draft and last-valid query with light/dark themes
Best for
- Developers building application interfaces
- Designers prototyping real user workflows
- Teams creating reusable UI patterns
At a glance
- Bootstrap 5.3.8 and vanilla JavaScript; no jQuery
- 1 pages: index.html
- Browser-local demo records; no backend, authentication or server writes
- Responsive layouts, keyboard controls, light and dark modes
- Free for personal and commercial use; attribution optional but welcome. Full terms: uicookies.com/license
How to use it
Unzip querynest and open index.html in a browser. Edit the HTML copy, the demo arrays in js/main.js and the palette in css/style.css. The supplied Bootstrap files are self-hosted, so there is no build step or external script dependency. Changes are stored only in this browser; connect your own authenticated API before using real records. Deploy the folder to any static host.
Frequently asked questions
Is Querynest free for commercial use?
Yes. Free for personal and commercial use, including client work. Attribution is optional but always welcome. Full terms: uicookies.com/license
What does the download include?
1 HTML pages (index.html), Bootstrap 5.3.8, one design stylesheet and one vanilla JavaScript file. No npm installation or build command is required.
Does it connect to a backend?
No. All people and records are fictional, and changes are saved in localStorage in this browser only. No emails, payments or real bookings are sent. Replace the data and persistence helpers with your own authenticated API for production.
How do I customize the template?
Change colors and typography using the custom properties at the top of css/style.css. Edit content in the HTML pages and the initial data arrays in js/main.js. Reset demo clears only this template’s saved demo records.
Is this a production backend?
No. The download contains front-end source and fictional browser-local records. Connect your own authenticated API and validate operations on your server before using real data.
