My webservice is hosted on one domain and my SharePoint site on another domain. I wanted to access my web service methods from client script (in SharePoint). What I am doing is

  1. Added reference of Web Service to my SharePoint project.
  2. Added an Application page.
  3. Created a Web Method in application page.
  4. This web method further access my web service method.
  5. From my client script I access my application page's web method.

Is this the right way to access a web service from client script?

Or can we directly access web service without any server side code or adding reference of web service? and having no cross domain issues


2 Answers 2


You may use cross-domain Ajax with JSON-P/JSONP, it was created specifically for this reason. Here are some references to get you started. If you need more specific examples, please let me know:

http://en.wikipedia.org/wiki/JSONP http://json-p.org/ https://stackoverflow.com/questions/2067472/what-is-jsonp-all-about

I also have this image - I'm not the creator - but I find it very useful.

Cross Domain Requests


try something like this using jQuery:

var webServiceGetInfoUrl = "http://MyWebService/Web.asmx/GetInfo";
var params = "{'param':'paramvalue'}";

    type: "POST",
    url: webServiceGetInfoUrl,
    data: params,
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function(msg) {    
        // do something here
    error: function(e){
        // do something here

more details about jQuery ajax request here

  • I guess with this approach I'll have cross domain issues if web service is deployed to a different doamin. Isn't it?
    – V.B
    Jun 26, 2014 at 5:49

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