No 'Access-Control-Allow-Origin' header is present on the requested resource

I have a very basic requirement. Take inputs from the user (as of now trying to take only one input) and insert the value in a custom object. 

Following is the JS code:-

var applicationModel = skuid.model.getModel(‘Application’);var applicationRow = applicationModel.data[0];
var result = sforce.apex.execute(‘ApplicationMasterController’,‘checkPassedValueFromPage’,
{
appFromSkuid: applicationRow
}
);

The ApplicationMasterController just has 2 lines of code viz.

webservice static String checkPassedValueFromPage(customObject appFromSkuid) {    
    return ‘tested the flow from Skuid Page’;
    }

the method does return the string but on the browser console there is an error which states “No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘https://c.cs6.visual.force.com’ is therefore not allowed access.”

I have even tried whitelisting the link. but does not help.

Any pointeres for this issue  and Is there any other way to achieve this requirement other than what I have tried??


Regards,
Gautam.