jquery-highlight

Text highlighting plugin for jQuery

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Readme

jQuery.Highlight.js
Text highlighting plugin for jQuery.
Original code1 and documentation2.

Install

How to use this plugin.
Note: This plugin requires jQuery to be included, which is left up to you.
First you need to install the module, which can be installed in one of the following ways:
npm install jquery-highlight
bower install jquery-highlight
component install knownasilya/jquery-highlight
# or just download it from Github

API

$.highlight

Function signature: highlight(word, options, callback)
The parameters are:
word string|array (required)
string such as "lorem" or "lorem ipsum" or an array of string such as ["lorem", "ipsum"]
options object (optional)
object with the following available options
* `className` -- The CSS class of a highlighted element, defaults to 'highlight'.
* `element` -- The element that wraps the highlighted word, defaults to 'span'.
* `caseSensitive` -- If the search should be case sensitive, defaults to `false`.
* `wordsOnly` -- If we want to highlight partial sections of a word, e.g. 'ca' from 'cat', defaults to `false`.
* `wordsBoundary` -- If `wordsOnly` is set to `true`, this is used to determine these boundaries, defaults to `\\b` (word boundary).
* `wordsBoundaryStart` -- If `wordsOnly` is set to `true`, this is used to determine prefix word boundaries, defaults to the value of `wordsBoundary`.
* `wordsBoundaryEnd` -- If `wordsOnly` is set to `true`, this is used to determine suffix word boundaries, defaults to the value of `wordsBoundary`.
 
callback function (optional)
function that will be called for each DOM node/element highlighted

$.unhighlight

Function signature: unhighlight(options):
The parameters are:
options object (optional)
object with the following available options
className -- The highlights to remove based on CSS class, defaults to 'highlight'. element -- The highlights to remove based on HTML element, defaults to 'span'.

Examples

Below are several ways that you can utilize this plugin.
// wrap every occurrence of text 'lorem' in content
// with <span class='highlight'> (default options)
$('#content').highlight('lorem');

// search for and highlight more terms at once
// so you can save some time on traversing DOM
$('#content').highlight(['lorem', 'ipsum']);
$('#content').highlight('lorem ipsum');

// wrap every occurrence of text 'lorem' in content
// with <span class='highlight'> (default options)
// log every word highlighted to the console using the invoked callback
$('#content').highlight('lorem', {}, function(el) {
 console.log('highligting DOM element', el)
});

// search only for entire word 'lorem'
$('#content').highlight('lorem', {
  wordsOnly: true
});

// search only for the entire word 'C#'
// and make sure that the word boundary can also
// be a 'non-word' character, as well as a regex latin1 only boundary:
$('#content').highlight('C#', {
  wordsOnly: true,
  wordsBoundary: '[\\b\\W]'
});

// search only for the entire word 'C++'
// and make sure that the word boundary can also
// be a 'non-word' character, as well as a regex latin1 only boundary:
$('#content').highlight('C++', {
  wordsOnly: true,
  wordsBoundaryEnd: '\\W*\\b'
});


// don't ignore case during search of term 'lorem'
$('#content').highlight('lorem', {
  caseSensitive: true
});

// wrap every occurrance of term 'ipsum' in content
// with <em class='important'>
$('#content').highlight('ipsum', {
  element: 'em',
  className: 'important'
});

// remove default highlight
$('#content').unhighlight();

// remove custom highlight
$('#content').unhighlight({
  element: 'em',
  className: 'important'
});

Attribution

Plugin was originally created by Bartek Szopka (@bartazbartaz).

License

MIT