⏰ Day.js 2KB immutable date library alternative to Moment.js with the same modern API
autoNumeric is a jQuery plugin that automatically formats currency (money) and numbers as you type on form inputs. It supports most International numeric formats and currency signs including those used in Europe, North and South America, Asia and India (lakhs**).
Typecast.js :: Solving the simple problems
Tiny polyfill for the placeholder form element attribute. Requires Prototype.js.
Tired of adding prefix for each broswer when it comes to the new css3 attributes?
A lightweight engine that allows you to hitch new capabilities to the browser (prollyfill).