What's the use of the Sizzle selector engine?

Question

I already know how to use the Sizzle CSS selector engine.

This is the syntax: Sizzle( selector );

So now my question is: What is the use of the Sizzle CSS selector engine?

Answer 1

Sizzle is much more lightweight than jQuery. jQuery is an entire DOM manipulation library and sizzle is just a selector engine. jQuery is 80kb gzipped and minified. Sizzle is 50kb uncompressed.