In this chapter, we learned about form validation and their types. We also learned the benefits of the different types of validations. We have also seen the various <input> types and attributes used in the validation of forms.

We have seen the difference between JavaScript validation and HTML5 validation by building a sample code.

Next, we learned about constraint validations and the various APIs supported by HTML5.

Lastly, we saw the various browser-specific default error messages and learned how to change the browser's default error message.