jQuery Scrollfire

Allows useful callbacks to be fired upon elements scrolling into and out of view from both the top and bottom of the viewport/window. Additionally, provides a mechanism to animate parallax elements.

added2dom

Fire a callback when an element is added to the DOM

jQuery SuperDOM

jQuery plugin for DOM operations in non-XHTML namespaces.

Nucleus jQuery

Nucleus binds your JS logic with the DOM by adding configuration data in the markup

UpDown.js

UpDown.js provides a flexible way to traverse through containers and their child elements with either keyboard commands or custom events.

hoe.js – javascript for peasants

lightweight javascript library designed to streamline the creation of user interface in HTML/javascript

Binder.js

Two-way DOM-based databinding for modern browsers

jQuery DOMTimers – Deferred callbacks when DOM loads and renders.

Adds two functions to the jQuery library: $.DOMReady() – Returns a Deferred that resolves when the DOM is ready. $.DOMRendered() – Returns a Deferred that resolves when the DOM has finished rendering the HTML.

jsml

jQuery plugin for generating DOM structures concisely.

.closestDescendant( selector [, findAll ] )

Get the first element(s) that matches the selector by traversing down through descendants in the DOM tree level by level. It use a breadth first search (BFS), that mean it will stop going deeper in a subtree if the first matching descendant was found in the current subtree.