jQuery form validation plugin.
https://github.com/jzaefferer/jquery-validation
JavaScript Libraries and Functions · Forms and Surveys · jQuery Plugin
Get access to data on 68,644 websites that are jQuery Validation Plugin Customers. We know of 28,124 live websites using jQuery Validation Plugin and an additional 40,520 sites that used jQuery Validation Plugin historically and 10,722 websites in the United States.
Get a list of 68,644 websites using jQuery Validation Plugin which includes location information, hosting data, contact details, 28,124 currently live websites and an additional 27,470 domains that redirect to sites in this list. 40,520 sites that used this technology previously and 10,722 websites in the United States currently using jQuery Validation Plugin.