Using Post With Ajax Questions

[lanmind]

Hello everybody,If anybody can help explain my questions I'd appreciate it. When you use a POST request versus a GET requset with Ajax how come:One- Some http headers must be sent along with any POST request? Like so:

http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");http.setRequestHeader("Content-length", params.length);http.setRequestHeader("Connection", "close");

Two- The data to be sent must be sent as the argument of the send function? Like so:

http.send(params);

I'm really clueless why headers must be sent on a POST versus a GET requset.Thank you for your time.

Edited September 5, 2009 by lanmind

[Ingolme]

You need to send headers as long as you're sending data. When using GET, you don't send any data because the data can be extracted from the URL.

[lanmind]

I see, thank you.