Customizable Select Box & Input Field Enhancement Library – Choices.js
Choices.js is a vanilla JavaScript plugin for creating customizable select inputs with multi select and autocomplete support.
JavaScript & CSS autocomplete
Fast Autocomplete & Typeahead Library – autoComplete.js
A dynamic, blazing fast, dependency-free, and easy-to-use autocomplete & typeahead JavaScript library for modern web development.
Multi Purpose AJAX Autocomplete In Vanilla JavaScript – bautofill
bautofill is a multi-purpose autocomplete library for text box, written in pure JavaScript.
Autocomplete List With Custom Trigger – AutoSuggest.js
The AutoSuggest.js JavaScript library to display an autocomplete list when you tying trigger characters in an input field, textarea element or contenteditable container.
Accessible Autocomplete Component In Vanilla JavaScript – Autocomplete
A fast, dynamic, accessible (WAI-ARIA) compliant autocomplete component written in vanilla JavaScript.
Cascading Autocomplete Dropdown In JavaScript – AutoCompleTree
A pure JavaScript autocomplete plugin that enables the user to select items from a cascading autocomplete dropdown just like a hierarchical tree.
Fast Autocomplete Dropdown For Input Field – autocomplete.js
A vanilla JavaScript autocomplete library that attaches a blazing fast autocomplete dropdown list to your input field while typing.
@mention Autocomplete In ES6 JS
This is a Vanilla JavaScript (ES6) implementation of the popular @mention someone autocomplete functionality in a textarea element.
Small Autocomplete Plugin For Input Fields – autocomplete.js
A very small autocomplete JavaScript library that allows the users to quickly select an option item from a group-enabled suggestion dropdown list.
Fast Fuzzy Autocomplete Library – tiny-complete
tiny-complete is an ultra-light JavaScript library for blazing autocomplete functionality (aka. typeahead, autosuggest) with support for fuzzy search.