You Might Need jQuery
jQuery: Maybe you’ve heard of it. If not, may I welcome you to the internet and introduce you to some cool websites? jQuery is a hugely popular JavaScript library that gives you an API to manipulate DOM elements easily, handle events, AJAX your content, and create all the other cool features that make the web go ‘round. The scale of jQuery’s popularity is incredible; it’s used on over 80% of the most trafficked websites, and its CDN serves up over 500 million files a day.