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November 1, 2009

Underscore.js

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.

Underscore provides 45-odd functions that support both the usual functional suspects: map, select, invoke -- as well as more specialized helpers: function binding, javascript templating, deep equality testing, and so on. It delegates to built-in functions, if present, so JavaScript 1.6 compliant browsers will use the native implementations of forEach, map, filter, every, some and indexOf.

Underscore includes a complete Test & Benchmark Suite for your perusal.

The unabridged source code is available on GitHub.

Here

Posted by Carlos Nossa at November 1, 2009 3:54 PM

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