Question:

I want to know what is the name of the design pattern behind method chaining in jQuery?

According to this post <a href="https://softwareengineering.stackexchange.com/questions/137999/what-is-the-pattern-name-for-using-method-chaining-to-build-an-object" rel="nofollow">https://softwareengineering.stackexchange.com/questions/137999/what-is-the-pattern-name-for-using-method-chaining-to-build-an-object</a>, it's called a <strong>Fluent Interface</strong>.

I see many articles referring to it simply as <strong>method chaining</strong> also (which seems more descriptive) and also the <strong>Chaining Pattern</strong>. It seems the more you search, the more different names you can find, though there are many references to the term "fluent interface".