Get Parent Customer ID based on contact id

sometime we have requirement to get contact’s parent customer id, if you have same requirment you can use below code, make sure

function ParentCustomerID(ContactId) {

    var context = Xrm.Page.context;
    var serverUrl = context.getServerUrl();
    var ODataPath = serverUrl + “/XRMServices/2011/OrganizationData.svc”;
    var retrieveParentCustomer= new XMLHttpRequest();
    retrieveParentCustomer.open(“GET”, ODataPath + “/ContactSet(guid’” + ContactId+ “‘)”, false);
    retrieveParentCustomer.setRequestHeader(“Accept”, “application/json”);
    retrieveParentCustomer.setRequestHeader(“Content-Type”, “application/json; charset=utf-8″);
    retrieveParentCustomer.onreadystatechange = function() {
        retrieveParentCustomerCallBack(this);
    };
    retrieveParentCustomer.send();

}
function retrieveParentCustomerCallBack(retrieveParentCustomer) {
    if (retrieveParentCustomer.readyState == 4 /* complete */) {
        if (retrieveParentCustomer.status == 200) {

            var retrievedParent = this.parent.JSON.parse(retrieveParentCustomer.responseText).d;

                    alert(retrievedParent.ParentCustomerId.Id); //for id
                    alert(retrievedParent.ParentCustomerId.Name); //for name

}
  
}}

Enjoy !!!