Benutzer:Wizard23/monobook.js: Unterschied zwischen den Versionen

Version vom 9. Juli 2006, 05:33 Uhr

// taken from
// http://www.sitepoint.com/article/remote-scripting-ajax


var requester = null;
var formRequester = null;
var metaStateTag = null;

window.onload = init;


/* Initialisation for JS capable browsers */
function init()
{
        metaStateTag = document.getElementById("metalab_state_23");
        if (metaStateTag != null) {
            requestLabText();
        }
	return true;
}


function requestLabText()
{
	if (requester != null && requester.readyState != 0 && requester.readyState != 4)
	{
		requester.abort();
	}
	try
	{
		requester = new XMLHttpRequest();
	}
	catch (error)
	{
		try
		{
			requester = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (error)
		{
			requester = null;
			return false;
		}
	}

	requester.onreadystatechange = onreadystatechange_requestLabText

	requester.open("GET", "/metasense/status.txt");
	requester.send(null);

        //alert("done sending request");
	return true;
}




/* Execute the action which has been associated with the completion of this object */
function onreadystatechange_requestLabText()
{
	// If XMLHR object has finished retrieving the data
	if (requester.readyState == 4)
	{
		// If the data was retrieved successfully
		try
		{
			if (requester.status == 200)
			{
				writeDetails();
			}
			// IE returns a status code of 0 on some occasions, so ignore this case
			else if (requester.status != 0)
			{alert
				alert("There was an error while retrieving the URL: " + requester.statusText);
			}
		}
		catch (error)
		{
		}
	}

	return true;
}


/* Update users details after data is retrieved via XMLHR */

function writeDetails() {
	metaStateTag.innerHTML = requester.responseText;
	return true;
}