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

Answer & Solution

Answer: Option C
Solution:
Presence validation, also known as required field validation, ensures that a field must be filled out before the form can be submitted.
Related Questions on Average

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

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

Which method is commonly used to prevent form submission if validation fails on the client-side?

A). event.preventDefault()

B). form.submit()

C). validate()

D). validateForm()

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

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

A). HTML

B). CSS

C). JavaScript

D). PHP

What is the role of CSS in client-side form validation?

A). To style error messages

B). To validate form input

C). To execute validation logic

D). To intercept form submissions

Which method is used to display error messages in client-side form validation?

A). document.getElementById()

B). console.log()

C). alert()

D). innerHTML

How does client-side form validation contribute to better user feedback?

A). By providing instant feedback to users

B). By encrypting data during transmission

C). By storing data securely in the database

D). By minimizing server-side processing

How can client-side form validation enhance user experience?

A). By providing real-time feedback

B). By encrypting sensitive data

C). By executing server-side scripts

D). By storing data locally

Which event triggers client-side form validation?

A). onclick

B). onsubmit

C). onchange

D). onvalidate