• GET is used to get data from a server resource
• GET submits via the query string
• POST is used to submit data to a server resource
• POST is sent via HTTP message body

• Make requests to the server in the background
• Allows you to send and receive data from the server without refreshing the page

• XMLHttpRequest Object
• jQuery - $.ajax
• jQuery - $.get
• jQuery - $.post

$.get('/myapi', function(dataFromServer){
 console.log(dataFromServer);}); 

• JSON - JavaScript Object Notation

{  "slide" : {   "type" : "all",   "title" : "Overview",   "items" : [     "item1",     "item2"   ]  }}

• XML - Extensible Markup Language

<slide type="all">
   <title>Overview</title>
   <item>item1</item>
   <item>item2</item>
</slide>