Modern Web Design with HTML5, CSS3, and JavaScript - What is jQuery and How to Write jQuery Code?

This video tutorial introduces jQuery, a popular JavaScript library that simplifies DOM manipulation, event handling, and animations. It explains how to download and choose between compressed and uncompressed versions, as well as slim versions that exclude certain features. The tutorial covers minification, using content delivery networks (CDNs) for faster loading, and demonstrates how to implement jQuery in projects. It also provides a method to check if jQuery is loaded on a webpage using the console.

What is the primary purpose of jQuery as a JavaScript library?

• To create databases

• To enhance CSS styling

• To simplify element selection and manipulation

• To replace HTML

Which version of jQuery excludes features like Ajax?

• Compressed version

• Uncompressed version

• Slim version

• Full version

What is the difference between compressed and uncompressed jQuery versions?

• Uncompressed is not human-readable

• Compressed is minified and smaller

• Compressed is larger in size

• Uncompressed is minified

What is a key advantage of using a CDN for jQuery?

• It increases file size

• It provides faster loading times

• It requires more coding

• It limits browser compatibility

Why might a developer choose the latest version of jQuery from a CDN?

• To reduce the need for HTML

• For better backward compatibility

• To ensure the latest features and updates

• To avoid using JavaScript

How can you verify if jQuery is loaded on a webpage using the console?

• Type 'jQuery' and check for a return value

• Inspect the CSS files

• Check the HTML source code

• Look for a jQuery icon

What is a simple way to add jQuery to a project?

• By linking to a CDN or local file

• By downloading a PDF

• By writing it from scratch

• By using a CSS file