Determining Versions of jQuery with WordPress?

Question

How do I determine the versions of jQuery that shipped with each version of WordPress since like version 2.7? Was there a log kept somewhere on this? Because as a plugin developer, I may need to rely on a function that might not work in older versions of WordPress.

Answer 1

You can query the version of jQuery:

// Returns string Ex: "1.3.1"
$().jquery;

// Also returns string Ex: "1.3.1"
jQuery.fn.jquery;