easyUI的dateBox控制时间格式

<input type='text' name='yearQuery' class='easyui-datebox ' data-options="formatter:myformatter,parser:myparser"   />

<javascript>

function myformatter(date){
        var y = date.getFullYear();
        var m = date.getMonth()+1;
        var d = date.getDate();
        return y;
    }
function myparser(s){
        if (!s) return new Date();
        var ss = (s.split('-'));
        var y = parseInt(ss[0],10);
        var m = parseInt(ss[1],10);
        var d = parseInt(ss[2],10);
        if (!isNaN(y) && !isNaN(m) && !isNaN(d)){
            return new Date(y,m-1,d);
        } else {
            return new Date();
        }
    }

</javascript>