A better way to use localStorage and sessionStorage
Small, fast, awesome. The only ES5-ish set of polyfills (shims) you can mix-and-match because they're individual AMD modules.
Tired of adding prefix for each broswer when it comes to the new css3 attributes?
CSS4 parent selector based on jQuery
Typecast.js :: Solving the simple problems
A simple helper to extract values from a string based on a pattern.
JS string formatter that supports objects, currency, date/time, decimals, and more supports easy extension and garbage collection ... goes far beyond sprintf approach.
Tiny polyfill for the placeholder form element attribute. Requires Prototype.js.