JAVASCRIPT: Validation Controls: Required Field, Select Tag, Radio Button, Check Box

You will create a simple signup form with four input fields: username, email, password, and confirm password.

Why is it necessary to validate a form?
It is important to validate the form submitted by the user because it can have inappropriate values. So, validation is a must to authenticate the user.

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TABLE OF CONTENT

0:10 How to validate a form using JavaScript?
1:52 Why give value in option?
3:09 How do you make a field mandatory in JavaScript?
4:52 checked property in the form
7:02 What is the difference between innerHTML and innerText?

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