Form Validation in Under an Hour with Vuelidate - CSS-Tricks
Public
Parsley - The ultimate javascript form validation library
Heyoffline.js
Heyoffline.js is a simple tool that prevents your users from this kind of frustration. Written in CoffeeScript and compiled into JavaScript, the library can warn your users when their network goes down so that they don't lose anything. Once JavaScript is loaded, it can react to the loss of connection and change the page accordingly.
Allowing Users to Edit Text Content with HTML5
HTML5 Form Field Validation with CSS3
45 jQuery Plugins And Tutorials To Enhance Your Forms