Spotlight-style Element Highlighting Library – limelight.js
limelight.js is a standalone JavaScript library for creating a spotlight effect to highlight any DOM element within the document.
JavaScript & CSS highlight
Hightlight Content Selection For The Web – Web Highlighter
A pure JS web highlighter that makes it possible to highlight any content selection on the web.
Easy JavaScript Plugin For Word Highlighting In The Document – mark.js
mark.js is a lightweight and easy-to-use JavaScript library used for highlighting specified words/strings/phrases in the selected element.
Progressive Text Highlighting Effect With Pure JavaScript – lumin
lumin is a small, zero-dependency JavaScript library used to progressively highlight text within a specific container.
Highlight And Replace Text In JavaScript – HR.js
HR.js is a lightweight, Pure JavaScript library that enables you to highlight and replace specified character(s) within your text.
Highlighting Text In Textarea – highlight-ta.js
highlight-ta.js is a pure JavaScript library that allows to apply different CSS styles on specific characters within your textarea element using RegExp.
JavaScript Library To Highlight / Navigate Through DOM Elements – highlighter.js
highlighter.js is a small JavaScript library used to highlight, navigate through DOM elements of your document just like a site tour.