mongoose中报错Invalid left-hand side in assignment

Question

exports.doCreateNote = function(req,res,next){

    //用户名
    var username = req.session.username;
    
    var form = new formidable.IncomingForm();
    
    form.parse(req, function(err, fields, files) {
        var note = new NoteModel={
            noteTitle: req.fields.noteTitle,    
            noteAuthor: username,  
            noteContent:req.fields.noteContent,  
        }

        note.save(function(err,docs){
            if(err){
                return;
            }
        });
      });
} 

var note = new NoteModel={

               ^^^^^^^^^^^^^

SyntaxError: Invalid left-hand side in assignment

node运行时会报错，原始的schema在使用本地测试用的数据时是没有问题的