As more JavaScript libraries spring up and battle to survive, developers stand to benefit from great solutions that fit a variety of needs. By John Papa; 06/01/2012; Today's Web landscape is fraught ...

Zepto is described as “a minimalist JavaScript library with a largely jQuery-compatible API.” Developers who know jQuery already know how to use Zepto, its makers go on to say.

Using other JavaScript libraries. Several popular open-source libraries are included with Observable, including D3, Arquero, and Apache Arrow.

Using the Google AJAX API Loader method, an application gains access to open-source JavaScript libraries, including script.aculo.us, dojo, jQuery, MooTools and prototype.