Form 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. Ensure the parent has position: relative for tooltip positioning.
Custom Styles
For custom Bootstrap form validation messages, you’ll need to add thenovalidate boolean attribute to your This disables the browser default feedback tooltips, but still provides access to the form validation APIs in JavaScript. Try to submit the form below; our JavaScript will intercept the submit button and relay feedback to you.
When attempting to submit, you’ll see the :invalid and :validstyles applied to your form controls.
Browser Defaults
Not interested in custom validation feedback messages or writing JavaScript to change form behaviors? All good, you can use the browser defaults. Try submitting the form below. Depending on your browser and OS, you’ll see a slightly different style of feedback. While these feedback styles cannot be styled with CSS, you can still customize the feedback text through JavaScript.
Supported Elements
Use the browser’s built‑in validation UI. Just add was-validated to your form, and supported controls (<textarea>, <select>, <input> types) will display default feedback.