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I have a page to display all my course published.
I would like to implement a searching bar, so that visitors can filter the course’s holding places or categories. Should I use the plugin to implement it or code it by myself (I just know a bit html, CSS and js)

There are many out-of-box plugin solutions available, you can check out if any of those suits you, see here for some possibilities:
* [https://wordpress.org/plugins/post-grid-and-filter-ultimate/](https://wordpress.org/plugins/post-grid-and-filter-ultimate/)
* [https://wordpress.org/plugins/blog-filter/](https://wordpress.org/plugins/blog-filter/)
* [https://wordpress.org/plugins/filter-everything/](https://wordpress.org/plugins/filter-everything/)
* [https://codecanyon.net/item/woof-woocommerce-products-filter/11498469](https://codecanyon.net/item/woof-woocommerce-products-filter/11498469)
* [https://wordpress.org/plugins/search-filter/](https://wordpress.org/plugins/search-filter/)
* [https://searchandfilter.com/](https://searchandfilter.com/)
* [https://codecanyon.net/item/wordpress-meta-data-taxonomies-filter/7002700](https://codecanyon.net/item/wordpress-meta-data-taxonomies-filter/7002700)
* https://facetwp.com/