- Help Center Home
- Getting started
- Introducing FacetWP
- Installation and updates
- FAQ
- How it works
- What are facets?
- Facet types
- Built-in facet types
- Checkboxes
- Dropdown
- Radio
- fSelect
- Hierarchy
- Slider
- Search
- Autocomplete
- Date Range
- Number Range
- Star Rating
- Proximity
- Pager + load more
- Sort
- Reset
- User Selections
- Add-on facet types
- Map
- Hierarchy Select
- Range List
- Time Since
- A-Z Listing
- Color
- Custom facet types
- Custom facet types
- Indexing
- Listing templates
- Extras & integrations
- Add-on features and extras
- Using FacetWP with …
- Built-in integrations
- Advanced Custom Fields
- WooCommerce
- SearchWP
- WP-CLI
- Add-on integrations
- Blocks
- Bricks
- Elementor
- Beaver Builder
- WP Recipe Maker and Tasty Recipes
- Relevanssi
- WPML and Polylang
- Meta Box
- Flatsome (theme)
- External integrations
- Breakdance
- Document Library Pro
- Listify (theme)
- Listable (theme)
- WPGraphQL
- Tips & tricks
- WordPress multi-site
- WP All Import
- WebToffee Import Export
- WP Job Manager
- Easy Digital Downloads
- EDD Reviews
- Intuitive Custom Post Order
- Custom Taxonomy Order
- Post Types Order
- Genesis framework
- WP External Links
- ElasticPress
- Yoast SEO
- All in One SEO (Pro)
- The Events Calendar Pro
- Google Analytics 4
- Image Optimization by Optimole
- Meow Lightbox
- Cookiebot
- Caching, hosting & security
- WP Rocket
- Cloudflare
- WP Engine
- New Relic
- WordPress REST API Authentication
- All-In-One Security (AIOS)
- Fast Velocity Minify
- Incompatibilities
- Incompatible plugins and themes
- Troubleshooting
- Troubleshooting guide
- Using the right query
- Common issues
- Common indexing issues
- Get support
- Developers
- Hooks reference
- Indexing hooks
- Querying hooks
- Output hooks
- facetwp_facet_display_value
- facetwp_facet_html
- facetwp_facet_render_args
- facetwp_facet_pager_link
- facetwp_facet_sort_options
- facetwp_template_html
- facetwp_shortcode_html
- facetwp_render_params
- facetwp_render_output
- facetwp_builder_item_value
- facetwp_builder_dynamic_tags
- facetwp_builder_dynamic_tag_value
- Advanced hooks
- Deprecated hooks
- JavaScript reference
- Shortcodes reference
- FacetWP REST API
- How FacetWP works
- The FacetWP URL
- FacetWP speed and limits
- Tutorials
- Code snippets
- Feedback
- What’s new
- Changelog
- News & announcements
Why does FacetWP prefix its URL vars?
FacetWP’s query variables use a _
prefix to prevent conflicts with WordPress and other plugins.
WordPress has many reserved terms and reserved query variables. Unexpected things would happen if FacetWP would use them.
For more info about FacetWP’s URL variables, see this page.
See also
Last updated: September 7, 2022