Skip to content


Subversion checkout URL

You can clone with
Download ZIP
two functions: one that returns true, one that returns false
Branch: master
Failed to load latest commit information. init
index.js init
package.json 100% test coverage
tests.js 100% test coverage


This very simple module provides two basic functions, one that always returns true (trueFunc) and one that always returns false (falseFunc).


By having only a single instance of these functions around, it's possible to do some nice optimizations. Eg. CSSselect uses these functions to determine whether a selector won't match any elements. If that's the case, the DOM doesn't even have to be touched.

And why is this a separate module?

I'm trying to modularize CSSselect and most modules depend on these functions. IMHO, having a separate module is the easiest solution to this problem.

Something went wrong with that request. Please try again.