Form validation is one of the most critical factors when it comes to collecting information and preventing web form misuse.
Apart from saving you from possible cyber-attacks, form validation also protects your website from poor form entries. During form submission with validation, the user will be given the option to modify data fields that contain invalid data before submitting.
In general, you need form validation as a security measure since invalidated form data is one of the main sources of website security vulnerabilities.
Forms are fully supported in Bootstrap 5. Most of the components are mainly used to make the forms look clean and responsive which can be used with any screen size. While Bootstrap 5 forms automatically receive the correct formatting via given classes, when it comes to form validation you need to set up some extra classes and some JavaScript in order to take advantage of its contemporary validation support right out of the box.
In this article, I will show you how you can use Bootstrap 5 form validation to showcase some decent actionable feedback on form data fields such as textbox, select, checkbox, radio button along with some other available bootstrap’s form fields upon form submission. We will use JavaScript to disable form submissions if there are invalid fields entered.
Note: HTML 5 has its own validation means, but it has limitations especially when it comes to browser support. One of the noticeable limitations is the lack of customization when it comes to handling error messages which you will need to find a way to get sorted. Fortunately, Bootstrap 5 has contemporary form validation styles at hand.
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How it Works
Bootstrap 5 comes with super easy to use, yet powerful validation styles for input fields. These validation styles are used to showcase some form styles and messages, both errors and success states for form fields, and can be triggered when you submit the actual form.
Supported HTML Elements
Bootstrap 5 validation styles can be used on the following HTML elements including up to one .form-control class in input groups.
- <input>
- <select>
- <…….