PUBLIC MARKS from camel with tags server & javascript

The great thing about Realmac's QuickSnapper site is that if JavaScript is turned off, the list of snaps is visible by default. So we'll follow suit. It's also worth noting that their version only keep pulling in new items until it hits the end. I'll show you how you can keep the list looping, and in a follow up tutorial I'll show you how to hook this in to an Ajax hit that doesn't hammer your server and keeps the effect nice and smooth.

FileTreePanel is client-server application where client (browser) provides the user interface (UI) which displays the tree and context menu, handles drag & drop operations, etc. The filesystem that is displayed and managed by the UI is stored on a server. Therefore, we need some communication layer between client and server. Client sends a command to server, server processes this command and responds with a result. Client in turn processes the response and display results. All this communication is running in the background by Ajax (XMLHttpRequest) calls. The XMLHttpRequest is not used directly but the Ext JS - JavaScript Library ajax layer is used for this purpose. Client requests data from server with standard POST method and server is expected to respond with JSON (JavaScript Object Notation) string and appropriate HTTP headers.