Get CreatedBy using REST API SharePoint

Question

How can I get CreatedBy field using REST API SharePoint? Below is the code

var Ownurl = _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/getbytitle('Listname')/items?$select=Author,ID&$filter=ID eq 1;  

        $.ajax({  
               url: Ownurl,  
               headers: { Accept: "application/json;odata=verbose" },  
               async:false,  
               success: function (data) {  
                        var items = data.d.results;  
                        if (items[0].Author!= "") {  
                                author = items[0].Author;
                            }  
                        },eror: function (data) {  
                            alert("An error occurred. Please try again.");  
                            }  
               }); 

But somehow I am not able to get Author. Is there anything wrong?

Any help would be appreciated

Thanks.

Answer 1

Please try following REST URL, you must expand the Person and Group field.

var Ownurl = _spPageContextInfo.webAbsoluteUrl + "_api/web/lists/getbytitle('Listname')/items?$filter=Id eq 1&$expand=Author&$select=Author/Id"