Ajax Anomaly (no wonder what I do, I cannot set the variable)

2levelsabove

look at variable "test". i have tried to set it up everywhere. I get a successful response but it just does not like to set a variable.

function isSpecBook(fileid)
	{
var test = "test";

  if (window.XMLHttpRequest) {
		var req = new XMLHttpRequest();
	}
	else if (window.ActiveXObject) {
		var req = new ActiveXObject("Microsoft.XMLHTTP");
	}


req.open("GET", "include/_process/isSpecBook.php?FileID="+fileid+"&json=1", true);
	req.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	req.send(null);	


	req.onreadystatechange = function() {
		test = "success";


		if ((req.readyState == 4) && (req.status == 200)) {
			if (req.responseText.length) {
			test = "success";
				//var jsonSpec = eval('(' + req.responseText + ')');
				 if (req.responseText == "success"){

					test = "success";

				 }


			}
		}

	test = "success";                                     }//////req.onreadystatechange = function() {

return test;

}//function

ClarkF1

I had a similar problem.

I had to declare the variable outside of the function.

I just had

var test="";

as the very first thing in my javascript file and then assigned test using

test="test";

(no var before test)

That worked for me

2levelsabove

I tried that also. Still did not work.

rulian

declare you onreadystatechange before you send out the request
so that the last thing you do is send out the request

rulian

and first try this
a couple of things I saw,
you are submitting via get request so dont need the form codecs,
you had set test to success long before your responseText kicked in so your testing would be invalid at that point anyway

function isSpecBook(fileid)
	{
		var test = "test";

	if (window.XMLHttpRequest)
		{
			var req = new XMLHttpRequest();
		}

	else if (window.ActiveXObject) 
		{
			var req = new ActiveXObject("Microsoft.XMLHTTP");
		}

	req.onreadystatechange = function() 
		{
		test = "success";


		if ((req.readyState == 4) && (req.status == 200)) 
			{

				alert(req.responseText); 
			}


		}

		req.open("GET", "include/_process/isSpecBook.php?FileID="+fileid+"&json=1", true);
		req.send(null);	



 }

Weedpacket

Also keep in mind that Ajax requests take place asynchronously (that's what the 'A' stands for, after all); isSpecBook() will return pretty much immediately, leaving the request still running in another thread (that's why the event handler is needed).