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What is the purpose of form validation in web development?

• The purpose of form validation in web development is to ensure that user input is accurate, complete, and secure.

• To automatically generate user input without any checks.

• To enhance the aesthetic appeal of the website.

• To reduce the loading time of web pages.

How can you check if an input field is empty using jQuery?

• if ($('#inputField').val() == undefined) { /* input is empty */ }

• if ($('#inputField').val() !== '') { /* input is empty */ }

• if ($('#inputField').val() === 'null') { /* input is empty */ }

• if ($('#inputField').val() === '') { /* input is empty */ }

What jQuery method can be used to validate a form before submission?

• $('#myForm').on('submit', validateForm);

• $('#myForm').submit(function(event) { if (!isValid()) { event.preventDefault(); } });

• $('#myForm').checkValidity();

• $('#myForm').validate();

How can you attach multiple event handlers to a single element in jQuery?

• Use jQuery's .bind() method to attach multiple events.

• Attach event handlers directly in the HTML using the onclick attribute.

• Use jQuery's .append() method to add event handlers.

• Use jQuery's .on() method to attach multiple event handlers to a single element.

What is the purpose of the .ready() function in jQuery?

• The .ready() function is for handling form submissions.

• The .ready() function ensures code runs after the DOM is fully loaded.

• The .ready() function loads external scripts before the DOM is ready.

• The .ready() function is used to create animations.