Why does this ajax call fail?

Question

I'm on http://www.mywebsite.com, and I do a cross-domain ajax call (with jQuery) to http://myownajax.projects.it/folder/mypage.aspx :

$.ajax({ url: 'http://myownajax.projects.it/folder/mypage.aspx ', success: function(data) { console.log(data); } });

where it easily print "Hello" :

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="mypage.aspx.cs" Inherits="folder_mypage" %> Hello

but in fact I get an 200 OK error. Why? How can I fix it?

Rory McCrossan · Accepted Answer · 2012-02-24 10:24:10Z

5

Cross site scripting (aka XSS) is blocked by browsers as it is a security risk.

If you must retrieve data from another URL, you must use the JSONP format and GET requests only.

Try this:

$.ajax({ url: 'http://myownajax.projects.it/folder/mypage.aspx', type: 'get', // this is optional as 'get' is the default. datatype: 'jsonp', success: function(data) { console.log(data); } });

edited Feb 24, 2012 at 10:24

answered Feb 24, 2012 at 10:19

Rory McCrossan

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9 Comments

markzzz Over a year ago

It said "Hello is not defined" : I need a conversion to JSON? Or what?

Rory McCrossan Over a year ago

How are you accessing the variable? I assume the code you are using is not the same as you have posted as you would get a different error.

Rory McCrossan Over a year ago

Change your .aspx page to return a string which can be parsed into JSON format, in your example this would be ["Hello"]

markzzz Over a year ago

Uhm, in fact I need to send a whole page to the client! How can I do?

Rory McCrossan Over a year ago

It's best to open another question for that - don't forget to mark this one as accepted though ;)

|

Neo · Accepted Answer · 2012-02-24 10:18:42Z

2

You must specify the dataType:"jsonp", and cross domain ajax only support type:"GET". type:"POST" is not allowed.

answered Feb 24, 2012 at 10:18

Neo

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2 Comments

markzzz Over a year ago

It works! Now I get "Hello is not defined". I think I need a conversion?

Neo Over a year ago

It is not possible to fetch HTML from other domain. FYR

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