Shoestring
A lightweight, simple DOM utility made to run on a tight budget.
...Each feature is built as an optional extension to a minimal core so each can be removed from the production build (dependencies between extensions are rare). The selector engine delegates to modern browsers' native document.querySelectorAll (IE8) and addEventListener (IE9), which means it requires browsers that support those features. For projects that require deeper compatibility or a richer set of features, it is simple to swap in jQuery instead. As a rule, anything that works with Shoestring should work with jQuery, but not the converse.