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Plugin’s documentation: https://wdvillage.com/wdv-ajax-search/
ATTENTION! After updating to version 1.0.3, you need to open the plugin properties and click on the “Add / Edit Settings” button for each of the shortcodes you created and click on the “Save” button in the modal window that opens. If this is your first time installing this plugin, then just follow the documentation.
DESCRIPTION 
WDV Ajax Search (WordPress plugin) – with this plugin you can create different search forms for different post types your site and put their shortcode on the corresponding page.
ADMIN PART 
You can create special search form for any post type. In table you can see shortcode for your search form. You can put shortcode on the corresponding page or you can use form shortcode on template (you can find how to do this in documentation).
FORM SETTINGS 
Now you press button “Add/Edit Settings” and choose settings that you need. On General options, in paragraph 1 – ” Search in custom post types” you can see list of all post types that exists on your site. Here you can choose post type. For example you want to make search form for searching in post type “wdvdocs”. 
In paragraph 2 – “Search by” you can choose – the search will be carried out only by post titles or by post titles and content. 
In paragraph 3 you can write that message will see your custome if there are not records found (for example – “No record found”). 
In paragraph 4 you can write how many search result show on one table page with search results.
On the tab “Image” you can choose whether to show images in search results. You can choose size of the pictures and select the default image which will be shown if post have no picture.
On the “Layout” tab you can choose how the search form will look like.
HOW TO USE 
You can add the shortcode directly to the page where you want to see the search form. For example, you installed the documentation plugin for your products. Perhaps it does not have a search form and you can add a shortcode to search for documents to the page that displays the list of documents.
You can also add a shortcode to the archive page or to the blog page.
If during the creation of the form on the tab “General -> Search by” the item “Title” was selected and the visitor can simply open the found pages. 
If during the creation of the form on the “General -> Search by” tab the item “Title & Content” was selected and the visitor opens any of the found pages – on this page the found search text will be highlighted in color.
REAL EXAMPLES 
– This page (aniro.wdvillage.com/services/) contains a service search form. Here the search is carried out by headings (you can use for example “book” as a search word): Services (When the search is carried out by headings, then when opening the found pages, the search word is not marked there.) 
– Here (aniro.wdvillage.com/blog/) you can see search form on blog page: Blog (you can use for example “room” as a search word). 
– This page (aniro.wdvillage.com/rooms/) contains a search form for the description of rooms. Here, the search is carried out by the titles and content of the page (you can use for example “bed” as a search word): Rooms (When the search is carried out by the titles and content of the page, then when you open the found pages, the search word there is highlighted in color.)
<h3>Sources and Credits</h3>
<ol>
<li>
jQuery.Finder.js 
Finder (https://www.jqueryscript.net/text/Search-Through-Text-Finder.html) is a jQuery plugin for web apps and hybrid mobile apps to replicate the “Find” feature available in browsers and other software via Ctrl+F. This is perfect for implementing in hybrid mobile apps, where the browser’s features are not available to the user, and for web apps where you need to constrain the “Find” function to a particular porton of the page (e.g., to exclude UI elements from the search). 
This plugin was created by [Danny McGee] (https://github.com/dannymcgee).
</li>
<li>
Icon Fonts: 
Font Awesome (https://fortawesome.github.io/Font-Awesome/)
</li>
</ol>

WDV Ajax Search

With this plugin you can create different search forms for different post types and put their shortcode on the corresponding page.

devjbi

The Smart Searchify plugin provides a robust solution for creating customisable, SEO-friendly search filters for WordPress post types and custom post types. With extensive options for tailoring the search experience, this plugin empowers users to quickly locate relevant content with ease. AJAX and non-AJAX filtering capabilities ensure seamless performance, while SEO-friendly URLs make filtered results indexable by search engines, boosting site visibility. Designed for flexibility, this plugin supports various customisation options—from form positioning to input types and display layouts—making it a versatile choice for all types of WordPress sites.
Key Features & Benefits
<ul>
<li>Customisable Shortcode: Create unlimited shortcode tailored to specific post types, which can be placed anywhere on your site for easy accessibility.</li>
<li>Flexible Filter Options: Filter results by multiple taxonomies, including categories, tags, and custom taxonomies, enabling users to refine searches for more targeted results.</li>
<li>Customisable Filter Positioning: Position filters above or alongside your main content to match your site’s layout and enhance user experience.</li>
<li>SEO-Friendly URLs: Customise taxonomy slugs in URLs, ensuring search-friendly paths that enhance both user experience and search engine visibility.</li>
<li>AJAX Searching: Toggle AJAX on or off for dynamic, real-time filtering without page reloads, providing a smooth and responsive experience.</li>
<li>Display Options (List or Grid View): Choose between list or grid formats to present search results in the most visually appealing way for your audience.</li>
<li>Sorting Options: Enable sorting controls to give users the ability to arrange results by criteria like date, relevance, or alphabetical order.</li>
<li>Pagination Control: Set the number of items per page to manage the length and load time of search result pages, improving performance.</li>
<li>Author Display Control: Option to show or hide the author name on search results, providing flexibility based on content type and site branding.</li>
<li>Excerpt Control: Display or hide post excerpts in search results, allowing you to control the amount of information shown per result.</li>
<li>Read More Link: Include an optional “Read More” link for each result, encouraging deeper engagement with your content.</li>
<li>Input Type Customisation: Customise filter inputs with radio buttons, checkboxes, or multi-select dropdowns to suit your site’s design and usability needs.</li>
</ul>
Example 
Here’s an example of a shortcode created using Smart Searchify:
[jbid_smart_searchify id=”755″]
<h3>Licenses & Credits</h3>
Smart Searchify is distributed under the terms of the GNU GPL v2.0 or later. 
Feel free to use and modify this as you like.
Unless otherwise specified, all plugin files, scripts, and images are created by us and are licensed under the same license as the plugin.
<h3>Resources packed within the plugin.</h3>
jquery.multi-select.js 
 Source: https://github.com/mysociety/jquery-multi-select 
 License: GNU Affero GPL 
 License Url: https://www.gnu.org/licenses/agpl-3.0.html

Smart Searchify

Smart Searchify enhances the search functionality of your WordPress website to next level.

WDV Ajax Search vs Smart Searchify