- Add jquery to Site Assets
- go to http://site.com/Lists/Departments/NewForm.aspx
- Settings -> Edit Page, in form click ‘Add Web Part‘
- Media and Content -> Content Editor -> Click here to add content -> Edit Source
- Add [code]<script src="/SiteAssets/jquery-3.4.1.min.js"></script>[/code]
Add jQuery to SharePoint 2013
