Highlight Search Terms

Descriere

Highlights search terms within WordPress generated search results, both on the search results page and on each linked post page itself.

This plugin is light weight and has no options. It started as very simple fusion between How to Highlight Search Terms with jQuery – theme hack by Thaya Kareeson and Search Hilite by Ryan Boren. It has since evolved with many optimizations, HTML5 and bbPress support.

Since version 1.6 it no longer depends on the jQuery library.

Funcționalități

  • Click through highlights: Highlights not only on WP search results page but also one click deeper inside any of the found pages
  • Character and case insensitive (lenient) highlighting
  • BuddyPress / bbPress compatibility: highlighting within forum searches
  • Caching (WP Super Cache) compatibility
  • Search terms wrapped in double quotes now considered as single term

What does it do?

This low impact plugin finds all search terms on a search results page inside each post and highlights them with a <mark class="hilite term-N"> ... </mark> tag.
Note that N is a number starting with 0 for the first term used in the search phrase increasing 1 for each additional term used. Any part of a search phrase wrapped in quotes is considered as a single term.

What does it NOT do?

There are no CSS style rules set for highlighting. You are free to use any styling you wish but to make the highlights visible in browsers that do not support HTML5 like Internet Explorer 8 or older you absolutely need to define at least one rule.
Modern HTML5 browsers will use their own highlighting style by default, which usually is a yellow marker style background.

So what do I need to do?

In most cases, it should just work. But you can do two things to ensure backward browser and theme compatibility:

  1. Define CSS rules: There are no configuration options and there is no predefined highlight styling. You are completely free to define any CSS styling rules in your themes main stylesheet (style.css) or the Custom CSS tab if the WordPress theme customizer.
    You can find basic instructions and CSS examples in the FAQ’s.

  2. Check your theme: In most up to date themes (including WP’s own default theme) post and page content is shown inside a div with class hentry. This means search terms found in post and page content will be highlighted but not similar terms that accidentaly show in the page header, sidebar or footer.
    If your current theme does not use the hentry class (yet), this plugin will look for IDs content, main and finally wrapper but if none of those are found, it will not work for you out of the box. See the last of the FAQ’s for ways to make it work.

Available hooks and filters

  1. hlst_query_vars – The array of WordPress query variables that the plugin will identify as a search query. Must return an array. Default: ['search_terms','bbp_search'] (WordPress abd bbPress search)

  2. hlst_input_get_args – An array of GET variables that the plugin will identify as a search query. Must return an array. Default: [] (none)

  3. hlst_selectors – The array of possible HTML DOM element identifiers that the script will try. The first viable identifier it finds elements of will be scanned for search terms to mark, the rest is ignored. So the order is important here! Start with the element closest to, but still containing all the post/page title, excerpt or content. Must return an array. Default: ['#groups-dir-list','#members-dir-list','div.bbp-topic-content,div.bbp-reply-content,li.bbp-forum-info,.bbp-topic-title,.bbp-reply-title','article','div.hentry','div.post','#content','#main','div.content','#middle','#container','div.container','div.page','#wrapper','body']

  4. hlst_inline_script – The inline script that will be added to the plugin script file. Can be used to add to or alter the inline script. Must return a string.

Known issues & development

  1. If your theme does not wrap the main content section of your pages in a div with class „hentry” or HTML5 article tags, this plugin might not work for you out of the box. However, you can make it work. See the last of the FAQ’s for an explanation.

  2. Josh pointed out a conflict with the ShareThis buttons plugin. Since then, that plugin has been completely rewriten so please let me know if the problem still exists. Thanks!

  3. When search engine referrer is using SSL (notice the https:// in the URL) then the search terms cannot be determined. Most search engines are always over SSL nowadays. There is no way to get around that issue.

Please file bug reports and code contributions as pull requests on GitHub.

Capturi ecran

Întrebări frecvente

Installation instructions

To make it work, you will need to take up to three steps, depending on your wishes and WordPress theme. (I) A normal installation and activation procedure; (II) Make sure your theme uses any of the recognized classes or ID’s for the post content div so that the script knows where and where not to look for search terms;
and (III) optionally add CSS styling rules to get highlighting for older browsers that do not support HTML5 like Internet Explorer 8 and below.

I. Install now or use the slick search and install feature (Plugins > Add New and search for „highlight search terms”) in your WP2.7+ admin section or follow these basic steps.

  1. Download archive and unpack.
  2. Upload (and overwrite) the /highlight-search-terms/ folder and its content to the /plugins/ folder.
  3. Activate plugin on the Plug-ins page

II. In most up to date themes (including WP’s own Default theme) post and page content is shown inside a div with class hentry.
This class is recognized by the hilite script, which means search terms found in post and page content will be highlighted but not similar terms that coïncidentaly reside in the page header, sidebar or footer.
If your current theme does not use the hentry class (yet), this plugin will look for IDs content, main and finally wrapper (which might include the header, sidebar and footer areas) but if none of those are found, it will not work for you out of the box.
See the last of the FAQ’s for ways to make it work.

III. Optionally add at least one new rule to your themes stylesheet or the Custom CSS editor to style highlightable text.

For example use .hilite { background:#D3E18A; } to get a moss green background on search terms found in the content section (not header, sidebar or footer; assuming your Theme uses a div with class „hentry”).

Please find more examples in the FAQ’s.

I do not see any highlighting!

This plugin has no configuration options page and there is no predefined highlight styling. For any highlighting to become visible in browsers that do not support HTML5 like Internet Explorer 8 or older, you have to complete step III of the installation process.
Edit your themes stylesheet (style.css) or the WordPress theme customizer Custom CSS tab to contain a rule that will give you exactly the styling that fits your theme.

I want to customize the highlighting but have no idea what to put in my stylesheet. Can you give me some examples?

Go in your WP admin section to Appearance > Customize and add one of the examples below to get you started.

For a moss green background highlighting:

.hilite { background-color:#D3E18A }

Yellow background highlighting:

.hilite { background-color:yellow }

A light blue background with bold font:

.hilite { background-color:#9CD4FF; font-weight:bold }

Orange background with black font:

.hilite { background-color:#FFCA61; color:#000000 }

Please give me more advanced CSS examples

If you want to give different terms used in a search phrase a different styling, use the class „term-N” where N is a number starting with 0, increasing 1 with each additional search term, to define your CSS rules.
The below example will make every instance of any term used in the query show up in bold text and a yellow background except for any instance of a second, third and fourth term which will have respectively a light green, light blue and orange background.

.hilite { background-color:yellow; font-weight:bold } /* default */
.term-1 { background-color:#D3E18A } /* second search term only */
.term-2 { background-color:#9CD4FF } /* third search term only */
.term-3 { background-color:#FFCA61 } /* fourth search term only */

Keep in mind that for the first search term the additional class „term-0” is used, not „term-1”!

I really do not see any highlighting!

Then you might be experiencing a bug or plugin/theme conflict. Maybe it’s time to get some Support 🙂

Verificări

11 iunie 2021
I'm using this plugin now for a long time. It's easy to use and provides extra comfort for the visitors of my page. So, this plugin is very useful and I can really recommend it. Also the support by the plugin's author is very fast and a solution for a problem is provided in a short time. There is nothing what could be done better!
11 martie 2021
Самое лучшее решение! Подсветка искомого текста не только в результате поиска, но также и на конечной странице.
10 noiembrie 2020
Couldn't be happier with this plugin. Easy install, easy implementation... does exactly what it says. A big THANK YOU to the dev for developing it and offering for free to the community. Cheers!
30 august 2020
Thank you for this great plugin. It works just fine and does exactly what it says. :-))
Citește toate cele 32 de recenzii

Contributori și dezvoltatori

„Highlight Search Terms” este un software open-source. La acest modul au contribuit următoarele persoane.

Contributori

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Istoric modificări

1.6.1

Date 2021-08-18

  • FIX: NinjaFirewall incompatibility, thanks @danielrufde

1.6

Date 2021-06-22

  • NEW: Vanilla Javascript, no more jQuery dependency!
  • NEW: Arabic character normalization map. Thanks @khakan
  • NEW: Jetpack Infinite Scroll support

1.5.8

Date 2021-06-20

  • NEW: filters hlst_query_vars and hlst_input_get_args

1.5.7

Date 2021-06-10

  • FIX: broken comment pagination links, thanks @tooni

1.5.6

Date 2021-01-13

  • FIX: jQuery 3 incompatibility

1.5.5

Date 2020-04-07

  • FIX: XSS vulnerability revisited

1.5.4

Date 2020-04-02

  • Prevent click-through search highlighting from menu items or widgets

1.5.3

Date 2019-12-20

  • Third party search plugins compatibility improvement

1.5.2

Date 2019-03-07

  • FIX: cyrillic case sensitive results, thanks @dimmez
  • Script compression

1.5

Date 2018-03-10

  • Move to wp_add_inline_script

1.4.7

Date 2017-12-22

  • Fix possible vulnerability in append_search_query()
  • Prepare translation text domain

1.4.5

Date 2017-11-23

  • FIX: Prevent bbp_is_search() on admin triggered by Gravity Forms, reported by @dicoeenvoud

1.4.4

Date 2017-02-24

  • FIX: XSS vulnerability reported by Ben Bidner @ Automattic

1.4.3

Date 2017-01-31
Dev time: 3h

  • BUGFIX: [] operator not supported for strings in PHP 7, thanks @seppsoft
  • Drop pre WP 3.7 support
  • Improved bbPress support

1.4.2

Date 2016-10-04
Dev time: 3h

  • BUGFIX: use filtered search terms for click through highlighting

1.4.1

Date 2016-07-20
Dev time: 2h

  • BUGFIX: incompatibility with Relevanssi and other search plugins

1.4

Date 2016-04-10
Dev time: 6h

  • Better search results click though highlighting
  • Improved bbPress compatibility
  • Renamed Minified js

1.3.9.1

Date 2015-10-13
Dev time: 1h

  • FIX: Missing terms not wrapped in P tag (reported by zmokin)

1.3.9

Date 2014-09-04
Dev time: 5h

  • WordPress 3.8 search compatibility allowing less fuzzy search with quotes
  • ?sentence=1 query parameter compat
  • FIX: XSS vulnerability found by Rodolfo Godalle, Jr.

1.3

Date 2013-09-02
Dev time: 2h

  • BuddyPress and bbPress highlighting within forum searches
  • FIX: jQuery 1.10 compatibility

1.2.5

Date 2013-07-28
Dev time: 1h

  • FIX: Combine-JS compatibility (Thanks to Joshua Hoke)
  • More possible classes and ids to look for

1.2.4

Date 2012-12-16
Dev time: 1h

  • BUGFIX: non-western languages in URL not decoded

1.2.3

Date 2012-12-06
Dev time: 1h

  • BUGFIX: javascript infinite loop

1.2.2

Date 2012-10-11
Dev time: 6h

  • Search terms wrapped in double quotes now considered as single term
  • Caching compatible
  • Second click highlighting: not only on the search results page but also inside any of the found pages
  • Speed improvement
  • More search engines supported
  • BUGFIX: Undefined variable: cache_compat

1.2.1

Date 2012-07-27
Dev time: 1h

  • BUGFIX: non HTML5 browser (IE8 and older) support failing

1.2

Date 2012-07-25
Dev time: 8h

  • NEW: Caching (WP Super Cache) compatibility
  • NEW: Highlights not only on WP search results page but also one click deeper inside any of the found pages
  • NEW: Search terms wrapped in double quotes now considered as single term
  • support many more search engines: AOL, Dogpile, Search.com, Goodsearch.com, Mywebsearch.com, Webcrawler.com, Info.com
  • rebuilt as Class
  • plugin speed improvements

0.8

Date 2012-04-18
Dev time: 2h

  • HTML5 mark tag support
  • No more word boundary limit for non-latin based languages compatibility

0.7

Date: 2011-01-03
Dev time: 1h

  • BUGFIX: conflict with Cufon script

0.6

Date: 2010-09-06
Dev time: 2h

  • limit highlighted search terms to word boundary
  • added Bing, Ask, Baidu and Youdao search engines
  • now automatically check for and highlights in multiple theme div areas
  • BUGFIX: cloning first result excerpt to all excerpts

0.5

Date: 2010-08-07
Dev time: 2h

  • using jQuery in no-conflict mode and $hlst instead of $ to avoid conflict with prototype
  • split variables and moved js extension in compacted form to static file
  • moved jQuery and extention to footer + only when actually needed for faster page load

0.4

Date: 2010-04-07
Dev time: 1h

  • fixed Regular Expression to allow parts of words to be highlighted
  • search term wrapping limited to .hentry divs

0.3

Date: 2009-04-16
Dev time: 1h

  • Bugfix for Firefox 2+ (forcefully highlights now limited to div#content)

0.2

Date: 2009-04-15
Dev time: 1h

  • Allowing for multiple search term styling
  • Bugfix for IE7 / IE8, thanks to Jason

0.1

Date: 2009-04-14
Dev time: 3h

  • Basic plugin aimed at low impact / low resource demand on your WP installation using client side javascript.