How can you make a field optional in jQuery Validation Plugin?

How do you specify a custom error message for a validation rule?

A). error: 'Message'

B). message: 'Message'

C). msg: 'Message'

D). messages: { fieldName: 'Message' }

How can you display all error messages in one place instead of next to each field?

A). Use the errorSummary option

B). Use the errorLabel option

C). Use the errorContainer option

D). Use the errorList option

How do you apply validation to only specific fields in a form?

A). By using the field selector

B). By using the field attribute

C). By specifying fields in the validate method

D). By using CSS classes

What is the correct way to specify validation rules in the jQuery Validation Plugin?

A). rules: { fieldName: rule }

B). fields: { rule: fieldName }

C). options: { fieldName: rule }

D). validate: { rule: fieldName }

What does the email rule validate in a form field?

A). Field value is a URL

B). Field value is an email address

C). Field value is a number

D). Field value is a date

What is the default event that triggers form validation in the jQuery Validation Plugin?

A). onSubmit

B). onBlur

C). onChange

D). onFocus

How can you add a custom validation method using the jQuery Validation Plugin?

A). $.validator.custom()

B). $.validator.addMethod()

C). $.validator.newMethod()

D). $.validator.create()

Which rule ensures that a field must not be left empty?

A). minlength

B). maxlength

C). required

D). email

Which method prevents the default form submission if validation fails?

A). submitHandler: function(form)

B). beforeSubmit: function(form)

C). onError: function(form)

D). preventSubmit: function(form)

How do you validate a field that should only contain numbers?

A). Use the number rule

B). Use the digits rule

C). Use the numeric rule

D). Use the integer rule