Client Side

• JavaScript
• DOM
• Dynamic requests
• AJAX

JavaScript

The Document Object Model

• The DOM is an interface that scripts can use to interact with the page they are loaded on
  • ■ Examples: Read data from forms, replace parts of the page
  • ■ Can register event handlers with DOM elements to respond to clicks, keypresses, mouse movements, selections...
• ■ The DOM has evolved considerably over the years
  • ■ Several different “levels”, lots and lots of functions
• ■ Directly interacting with the DOM can be somewhat painful
  • ■ But libraries can make this more convenient (e.g., jQuery)

Dynamic Requests

XMLHttpRequest

AJAX