Which validation technique ensures that a required field is not left empty?

How can JavaScript be used to validate form input on the client-side?

A). By accessing form elements and checking their values

B). By submitting form data to the server for validation

C). By storing validation rules in the HTML markup

D). By encrypting form data before submission

How does client-side form validation contribute to improved security?

A). By preventing malicious data submission

B). By encrypting data during transmission

C). By storing data securely in the database

D). By executing server-side validation scripts

Which attribute is commonly used to specify validation rules in HTML form elements?

A). validate

B). required

C). validation

D). validate-rule

What is the benefit of validating form input on the client-side?

A). Reduced server load

B). Faster page rendering

C). Improved database performance

D). Enhanced security

Which programming language is commonly used to implement client-side form validation?

A). HTML

B). CSS

C). JavaScript

D). PHP

Which method prevents form submission if validation fails on the client-side?

A). submitHandler()

B). onsubmit event

C). validate() method

D). preventDefault() method

What is the purpose of the validate() method in client-side form validation libraries?

A). To trigger form submission

B). To validate form input

C). To encrypt form data

D). To execute server-side scripts for validation

How does client-side form validation contribute to better error handling?

A). By identifying errors before form submission

B). By encrypting form data

C). By storing errors in the database

D). By executing server-side scripts for error correction

Which method is commonly used to trigger client-side form validation when a form is submitted?

A). validateForm()

B). event.preventDefault()

C). form.submit()

D). validate()

What is the primary purpose of client-side form validation?

A). Enhance server performance

B). Improve user experience

C). Secure data transmission

D). Validate server responses