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Form Validation
Custom Bootstrap Form Validation
For custom Bootstrap form validation messages, you’ll need to add
the novalidate boolean attribute to your form. For server side
validation read full documentation.
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.
Server side
We recommend using client side validation, but in case you require
server side, you can indicate invalid and valid form fields with
.is-invalid and .is-valid. Note that
.invalid-feedback is also supported with these classes.
Supported elements
Form validation styles are also available for bootstrap custom form controls.
Tooltips
You can swap the .{valid|invalid}-feedback classes for
.{valid|invalid}-tooltip classes to display validation feedback in a
styled tooltip.