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.ajax, no preflight message and error on 200 OK

in Using jQuery • 10 years ago

I'm trying to test out a new web service and it seems to be working fine except when I consume it using jQuery. jQuery.ajax first of all isn't sending an OPTIONS request, just a GET request, even though it is cross-domain, and then when the response comes back 200 OK with an XML response jQuery.ajax throws an error, responseText is empty and responseXML is undefined. Here's my code:

var name = prompt("Please enter your name", "Harry Potter");
var XmlUrl = "http://c12723/HostDevServer/HelloWorldService.svc/GetMessage?name=" + encodeURI(name);
jQuery.ajax({dataType: "xml", error: function(x,y,z){
alert(y + ": " + z + "\nCould not read XML");
alert(x.responseXML);
}, success: function(r_data, r_textStatus, r_jqXHR){
jQuery('#message').text(r_data);
}, url: XmlUrl});

And here is the response from the server:

HTTP/1.1 200 OK
Server: Microsoft-IIS/5.1
Date: Wed, 21 Nov 2012 21:07:54 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 4.0.30319
Content-Length: 136
Cache-Control: private
Content-Type: application/xml; charset=utf-8

<GetMessageResponse xmlns="http://tempuri.org/"><GetMessageResult>Hello world from Harry Potter!</GetMessageResult></GetMessageResponse>

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