Since the oldest supported version of IE is now 11: http://youmightnotneedjquery.com/ http://youmightnotneedjquery.com/ "jQuery and its cousins are great, and

Since the oldest supported version of IE is now 11: http://youmightnotneedjquery.com/ http://youmightnotneedjquery.com/ "jQuery and its cousins are great, and by all means use them if it makes it easier to develop your application. "If you're developing a library on the other hand, please take a moment to consider if you actually need jQuery as a dependency. Maybe you can include a few lines of utility code, and forgo the requirement. If you're only targeting more modern browsers, you might not need anything more than what the browser ships with."