Message.forEach is not a function or some time undefined problem

[AvanishKumar008]

Details['11'] = {
            'id': '11',
            'name': 'Avanish'
        };
res.render('/index',{'Message': Details});

Page code

        <script>
           var ERRORCONST = 'Error';
           var NORECORDS = 'No records';
        </script>

<%if(Message != undefined && Message != NORECORDS && Message != ERRORCONST ){%>
<%Message.forEach(function(key){%>
<span><%= key.id %> - <%= key.name %></span>
<%});%>
<%}%>

Getting error `NORECORDS is not definedand print all code on page. I have two error. One is how to use Multiple condition in single if statement and second is how to compare javascript varibale with server variable

if i remove && Message != NORECORDS && Message != ERRORCONST after that getting error forEach not a function.