PUBLIC MARKS with tags functions & javascript

Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects. It's the tie to go along with jQuery's tux. Collections each, map, reduce, detect, select, reject, all, any, include, invoke, pluck, max, min, sortBy, sortedIndex, toArray, size Arrays first, last, compact, flatten, without, uniq, intersect, zip, indexOf, lastIndexOf Functions bind, bindAll, delay, defer, wrap, compose Objects keys, values, extend, clone, isEqual, isElement, isArray, isFunction, isUndefined Utility noConflict, identity, uniqueId, template