Validation
Bootstrap Validation - Normal
Provide valuable, actionable feedback to your users with HTML5 form validation–available in all our supported browsers.
Bootstrap Validation (Tooltips)
If your form layout allows it, you can swap the .{valid|invalid}-feedback
classes for .{valid|invalid}-tooltip
classes to display validation feedback in a styled tooltip.
PristineJS Validation
PristineJS Vanilla javascript form validation library