Form Validation

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Validation Styles

Bootstrap includes validation styles for invalid, and valid states on form controls. you can indicate invalid and valid form fields with .is-invalid and .is-valid. Note that .invalid-feedback is also supported with these classes.

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Standard Mode

Summary Mode

Errors list below:

    Full Example Basic validation will display a label with the error after the form control.

    Constraints

    Basic Constraints

    Type