Jquery Cross-Domain ajax call using JSONP

ASP.NET Community, 11 Oct 2013

5.00 (1 vote)

Rate this:

Hi everyone. We all know the role of ajax and its implementation. We can use ajax in asp.net as well as in javascript/jquery. But there is a

Editorial Note

This articles was originally at wiki.asp.net but has now been given a new home on CodeProject. Editing rights for this article has been set at Bronze or above, so please go in and edit and update this article to keep it fresh and relevant.

Hi everyone. We all know the role of ajax and its implementation. We can use ajax in asp.net as well as in javascript/jquery. But there is a limitation of same origin policy. i.e. we can only use ajax to post and get requests within our site. We can call webservices but that is from the code behind only. Even if we use any scripting language it restricts us calling a third party domain. Also over SSL javascript/jquery's ajax call gives up easily. But using jsonp with jquery's ajax api call we can target the ajax call outside the scope of our website.

$(document).ready(function() {

var surl = "http://www.anotherdomain.com/webservice.asmx";

$.ajax({

type: 'GET',

url: surl,

crossDomain: true,

contentType: "application/json; charset=utf-8",

data: { UserID: 1234 },

dataType: "jsonp",

success: function(msg) {

$.each(msg, function(name, value) {

alert(value);

});

},

error: function(xhr, status, error) { alert('Servidor de error 404 !!'); },

async: false,

cache: false

});

});

Note:- This will only work with json data type, so while requesting a web service should return the data in Javascript Object notation format.

License

This article, along with any associated source code and files, is licensed underThe Code Project Open License (CPOL)

Share

email

twitter

facebook

linkedin

reddit

google+

pinterest

About the Author

ASP.NET Community

United States

The ASP.NET Wiki was started by Scott Hanselman in February of 2008. The idea is that folks spend a lot of time trolling the blogs, googlinglive-searching for answers to common "How To" questions. There's piles of fantastic community-created and MSFT-created content out there, but if it's not found by a search engine and the right combination of keywords, it's often lost.

The ASP.NET Wiki articles moved to CodeProject in October 2013 and will live on, loved, protected and updated by the community. Group type: Collaborative Group

247 members

Article Top