Upgrading jQuery: Working Towards a Healthy Web | Official jQuery Blog

With the rise of modern JavaScript frameworks, fewer developers may be choosing to use jQuery for new projects, but worldwide usage is still extremely high. After analyzing the results of a survey conducted by IDC, the OpenJS Foundation estimated that 90% of all websites use jQuery. And about a third of those use an outdated version.

Source: Upgrading jQuery: Working Towards a Healthy Web | Official jQuery Blog

There’s a very good chance somewhere some JavaScript you wrote still relies on jQuery, and it could well be out of date. Here’s what you can do about it.