• JavaScript provides a way to validate the form's data on the client's computer correctly before it’s sent to the server. Client-side (JavaScript) validation is easier to do and processing will be faster too as the browser doesn’t have to connect to the server to validate the form. Basic and Data validation are generally performed in form validation. Basic validation makes sure all the mandatory fields are filled in and whereas data validation ensures that data entered is clean and in the correct form.

    We can check name, password, email, date, mobile numbers, and more fields through Javascript validations. If mandatory fields are empty, data is invalid or entered text in a numeric field, then form alerts a message, and returns false, to prevent the form from being submitted.

    Form validation is an initial check and an important feature of a good user experience. It is preferred to opt for qa testing as a service to test efficiently the Javascript functions created to validate data on the client-side as validation is a must to authenticate users.

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