anchor.diff:          nextSlide.call(this);
       };
   
  -##The world of JS libraries
  +##The world of JS libraries  
  +
   [original webpage](https://www.khanacademy.org/computing/computer-programming/html-css-js/using-js-libraries-in-your-webpage/a/the-world-of-js-libraries "original webpage")
  -There are thousands of JavaScript libraries that you could bring into your webpage, and many aspects of your webpage that they can help you with:
  +There are thousands of JavaScript libraries that you could bring into your webpage,  
  +and many aspects of your webpage that they can help you with:
   
   DOM manipulation
   DOM Events
  
positive.code:         </script>
          </body>
      </html>
  in the script source link:
  
  
      /**
  
negative.code: QooxDoo
  Closure
  KendoUI
  CSS frameworks  
  
  
  A CSS library is a collection of CSS style rules, and documentation that shows you  
  what HTML tags and classes to use. There are many popular CSS libraries that will  
  make it easier for you to make a beautifully styled website. They sometimes include  
  optional JavaScript widgets, but developers often choose to use other JS libraries  
  with a CSS library.  
  
  
  Twitter Bootstrap (See example on KA)
  ZURB Foundation (See example on KA)
  Pure CSS
  Topcoat
  Skeleton
  JS browser libraries  
  
  
  These are libraries that will make it easier for you to use browser functionality - like  
  the DOM API, the window methods - the topics we discussed in this course. They  
  often make it possible to accomplish the same thing in less code, and they'll take  
  care of cross-browser bugs.  
  
  
  jQuery (The most popular library, by far! - See example on KA)
  ZeptoJS
  MooTools
  $dom
  QuoJS
  JS app architecture libraries  
  
  
  These libraries help you with your web apps as they grow larger. Your code might  
  be manageable now, at a few hundred lines of code, but once you get to thousands  
  of lines of code, your code might become "spaghetti code" - an unmanageable  
  mess. These libraries help you separate your "model" (data) from your "view"  
  (presentation), and often use object-oriented programming principles to organize  
  your code.  
  
  
  Facebook React + Facebook Flux
  Backbone
  AngularJS
  EmberJS
  Mini libraries & microlibraries  
  
  
  You can also use small libraries that developers have written for a specific task -   
  when they're really small, they're sometimes called "microlibraries". Here's a  
  smattering:  
  
  
  DOM: tinyDOM
  Events: Events.js
  