adobe comet

We all wanted to have our own portable Adobe's latest help documentation. At that time, Adobe cs4 was almost always an online help document, and many of our friends used web download methods to collect it, this effect is not good ~ Sometimes it cannot be complete. Here we use Adobe Communit help to download ~ With the new local help document, select the help document you want to download and click the local

When Adobe Flash Builder 4 cannot locate Adobe Flash Player: (error message) Download a debugging player. There are several DEBUG Versions on Adobe's website Http://www.adobe.com/support/flashplayer/downloads.html The first is the IE Plug-in, Download the Windows Flash Player 10.2 ActiveX control content debugger (for IE) (exe, 2.99 MB) The second is the Firefox plug-in, Download the Windows Flash Player

The core of Ajax technology is the XMLHttpRequest object (referred to as XHR), which is the first feature that Microsoft introduced, before the advent of XHR, Ajax communication must be implemented with some hack means, most of them using a hidden framework embedded framework. XHR provides a smooth interface for sending requests to the server and for the server's response. XHR can get more information asynchronously from the server, meaning that users can get new data without refreshing the page

1.Ajax core?Xhr>>1. New XMLHttpRequest>>2.open (), accepts 3 parameters.>>3.send (), accepts 1 parameters.>>4. When a server response is received, the response data is automatically populated with the properties of the Xhr object.ResponseTextResponsexmlStatusStatusText>> Sync requests, receive responses, check the following in order: status attribute; responsetext;responsexml;>> asynchronous request, receive response, check the following: Readystatus2.HTTP Header InformationSetrequeseheader ();

Comet: server Push , as opposed to the AJAX page requesting data from the server. Data can be pushed to clients almost instantly.But essentially the same: the browser initiates a request to the server, and the server responds to the requestComet implementations: Long polling, HTTP streaming1. Long polling-all browsers supportThe browser sends a request to the server and responds if there is valid data on the server side, otherwise "ignores".Once the s

! = Null messages. length> 0){Var keepWaiting = me. running;For (var I = 0; I {If (me. lastMessageId Me. lastMessageId = messages. MessageId; Switch (messages. Name. toLowerCase ()){Case "timedout ":Me. ontimeout ();Break;Case "canceled ":KeepWaiting = false;Me. oncancelled ();Break;Case "message ":Me. onmessage (messages );Break;}}If (keepWaiting)Me. waitForMessages ();}},Error: function (){Me. onerror ();}});} Download DEMO code Download the code COME