关于Freemarker日期传入出错的问题? 400 报错

关于Freemarker日期传入出错的问题? 400 报错

在使用插入chart.js时从数据库读出一条数据，比如2013-12-27 传入Freemarker后 直接变成了减法运算。

var acount=new Array();
var count=0;
  <#list li as l>
     acount[count]=${(l.date)};
     count++;
    </#list>
var lineChartData = {
labels : ["January","February","March","April","May","June","July"],
datasets : [
{
fillColor : "rgba(220,220,220,0.5)",
strokeColor : "rgba(220,220,220,1)",
pointColor : "rgba(220,220,220,1)",
pointStrokeColor : "#fff",
data : [50,59,90,81,56,55,40]
},
{
fillColor : "rgba(151,187,205,0.5)",
strokeColor : "rgba(151,187,205,1)",
pointColor : "rgba(151,187,205,1)",
pointStrokeColor : "#fff",
data : [28,48,40,19,96,27,100]
}
]

}
   
lineChartData.labels[0]=acount[0];
alert(acount[0]);

得到的是减法之后的值

但是在Js之外，用#list获得的值确是正确的。