Dhirender Tyagi Dhirender Tyagi - 1 month ago 12
Javascript Question

jquery ajax readystate 0 responsetext status 0 statustext error

I am getting the following error:

jquery ajax readystate 0 responsetext status 0 statustext error
when giving it:
url(http://www.tutorialspoint.com/prototype/prototype_ajax_response.htm)
, however it's working fine when I give it
url(localhost:""/embparse_page)
on my localhost.

I have tried using the headers which I found on a Google search, and I have used
beforeSend:""
too, but it's still not working.

I think the main problem is:
XMLHttpRequest cannot load http://www.tutorialspoint.com/prototype/prototype_ajax_response.htm. Origin "local server" is not allowed by Access-Control-Allow-Origin.
but I don't understand it.

Can anyone please explain the problem to me, as I'm quite new to this.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns:ng="http://angularjs.org">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta Access-Control-Allow-Origin="*" />
<title>Page Parsing</title>
<script type="text/javascript" src="/js/jquery-1.9.1.min.js"></script>
<script>
getit=function(){
jQuery.support.cors = true;
$.ajax({
type:"GET",
url:"http://www.tutorialspoint.com/prototype/prototype_ajax_response.htm",
dataType:"html",
crossDomain:true,
beforeSend: function(xhr) {
xhr.overrideMimeType('text/plain;charset=UTF-8');
},
success:function(XMLHttpRequest,jqXHR ,data) {
//alert(data.title);
var starttitl=data.lastIndexOf('<title>');
var endtitl=data.lastIndexOf('</title>');
var title1=data.substring(starttitl+7,endtitl);
alert(title1);
},
error:function(errorStatus,xhr) {
alert("Error"+JSON.stringify(errorStatus));
}
});
}
</script>
</head>
<body>
<div id="siteloader">
<input type="button" onclick="getit()" />
</div>
</body>
</html>

Answer

I was getting this error and in my case it was not due to same origin policy. I got some help from this link

My case was, I had a link button and I was not using e.PreventDefault()

ASPX

<asp:LinkButton ID="lnkSearch" runat="server" CssClass="DockCmdSearch" CommandName="Search" OnClientClick="return VerifySearch(this, event);" />

Javascript

function VerifySearch(sender, e) {        
    e.preventDefault();
    $.ajax({
                type: 'POST',
    .............
    }
    return false;
}
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