chainable en · ADJ
Etymology
From chain + -able.
Meanings
-
(not-comparable) Capable of being chained or connected together.
If you examine the last line in each method of the class, you'll notice that they all end in return this. This passes on the object to the next method in the chain. With a chainable interface, the possibilities are limitless.
2007, Dustin Diaz, Ross Harmes, Pro JavaScript Design Patterns, page 86: