Retrieve Entity using FetchXML in CRM 2011 Java Script

var pricelistlookup = null;
var accountname = null;

FetchPriceList = function (pricelistfield) {
    pricelistlookup = pricelistfield;

    if (Xrm.Page.getAttribute(pricelistlookup).getValue() == null) {
        var _oService;
        var _sServerUrl = Xrm.Page.context.getServerUrl();

        var fetchXml =
         "<fetch mapping=\"logical\">" +
                "<entity name=\"pricelevel\">" +
                    "<attribute name=\"name\" />" +
                    "<attribute name=\"pricelevelid\" />" +
                    "<filter>" +
                        "<condition attribute=\"statecode\" operator=\"eq\" value=\"" + "0" + "\" />" +
                         "<condition attribute='name' operator='eq' value='Default Price List' />" +
                    "</filter>" +
                "</entity>" +
            "</fetch>";

        _oService = new FetchUtil(_sServerUrl);
        _oService.Fetch(fetchXml, FetchPriceListCallBack);
    }
}

FetchPriceListCallBack = function (results) {
    try {
        if (results.length > 0) {
            var lookupData = new Array();
            var lookupItem = new Object();

            // Set the id, typename, and name properties to the object.
            lookupItem.id = results[0].attributes.pricelevelid.value;
            lookupItem.entityType = 'pricelevel';
            lookupItem.name = results[0].attributes.name.value;
            lookupData[0] = lookupItem;
            Xrm.Page.getAttribute(pricelistlookup).setValue(lookupData);
        }
    }
    catch (e) { alert("Default Price List Not found!!!"); }

}

Retrieve entity using ODATA in CRM 2011 Javascript

Retrieve a entity data using ODATA in CRM 2011 javascript


function retrieveSelectedProduct(productid) {
    var entity = "Product";    //Entity name
    var select = "?$select=ProductId,DefaultUoMId,ProductNumber"  // Columns Name
    var oDataSelect;
   var context = Xrm.Page.context;
   var serverUrl = context.getServerUrl();

    // build query string
    oDataSelect = "/XRMServices/2011/OrganizationData.svc/" + entity + "Set(guid'" + productid + "')" + select + "";

    $.ajax({
        type: "GET",
        contentType: "application/json; charset=utf-8",
        datatype: "json",
        url: serverUrl + oDataSelect,
        beforeSend: function (XMLHttpRequest) { XMLHttpRequest.setRequestHeader("Accept", "application/json"); },
        success: function (data, textStatus, XmlHttpRequest) {
            // Use for a single selected entity
            ProcessReturnMsg(data.d);
        },
        error: function (xmlHttpRequest, textStatus, errorThrown) {
            alert("Status: " + textStatus + "; ErrorThrown: " + errorThrown);
        }
    });
}

function ProcessReturnMsg(productEntity) {
    if (productEntity.DefaultUoMId != null) {
        var uomId = productEntity.DefaultUoMId.Id;
        var uomName = productEntity.DefaultUoMId.Name;

        // insert the default unit of measure
        var defaultuomid = new Array();
        defaultuomid[0] = new Object();
        defaultuomid[0].id = uomId;
        defaultuomid[0].name = uomName;
        defaultuomid[0].entityType = "uom";

        Xrm.Page.getAttribute("uomid").setValue(defaultuomid);
    }
}