Error handling cross domain jquery ajax call

Question

I am performing one cross domain get operation as shown below.

$.ajax({ type: "GET", url: "http://localhost:65249/api/item/get", data: { searchText: "test" }, dataType: "jsonp", async: false, success: function (results) { alert(results); }, error: function (jqXHR, error, errorThrown) { if (jqXHR.status && jqXHR.status == 401) { alert("Unauthorized request"); } else if (jqXHR.status && jqXHR.status == 404) { alert("The requested page not found"); } } });

But success or error block is not getting called after request is completed. when i debug java script in developer console i am receiving error but error block of javascript is not getting called.

GET http://localhost:65249/api/item/getallproducts?callback=jQuery182028460139059461653_1396510235829&searchText=test&_=1396510674779 401 (Unauthorized)

Tommi Gustafsson · Accepted Answer · 2014-04-03 07:57:39Z

2

Unfortunately, if you are using JSONP, all requests that return an error fail silently. This is because JSONP uses a script tag instead of XmlHttpRequest. If you want errors to fire, you need to use XHR with CORS. CORS needs to be configured on the server side, and it works client side only in IE 10+.

answered Apr 3, 2014 at 7:57

Tommi Gustafsson

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1 Comment

Sandeep Over a year ago

i have removed "jsonp" from ajax call and configured cors in web.cofig of web api application and now error block of jquery working fine. <system.webServer> <httpProtocol> <customHeaders> <add name="Access-Control-Allow-Origin" value="*" /> <add name="Access-Control-Allow-Headers" value="Content-Type" /> </customHeaders> </httpProtocol> </system.webServer>

Community · Accepted Answer · 2017-05-23 12:07:53Z

error dont work on corss domain calls, see jquery doku. for error:

Note: This handler is not called for cross-domain script and cross-domain JSONP requests.

Take a look at this answer: JSONP request error handling

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