Ajax - Send a Request to Server

Send a Request to Server using Ajax

XMLHttpRequest Object, following methods are allow to interact with the server.

Property	Description
open(method, url, boolean)	Specifies the type of method, URL and Boolean(if true than handle asynchronous or false than handle synchronous) method: type of request, GET or POST url: the location of the file o the server (with path) boolean: true (asynchronous) / false (synchronous) optionally: You wish to login and password may be added to arguments
send("string")	String: use only POST method request.

GET is simpler and faster than POST, so mostly use a GET.
POST request use when sending a large amount of data to the server, update contain on the server also POST is secure and robust method than GET.
POST request use to send the data to send to the server.

	
xmlhttp.open("GET", url, true)  // xmlhttp is variable name
xmlhttp.send()

	
req.open("GET", "ajax_demo.txt", true); // req is variable name
req.send(null);

	
xmlhttp.open("POST", url, true)   // xmlhttp is variable name
xmlhttp.send(String)

	
req.open("POST", "ajax_demo.txt", true); // req is variable name
req.send("hitesh");

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