找了半天工具类，结果还是手动来得快。。。。

// 获取当前日期加一年
var date = new Date();
var year = date.getFullYear();
var month = date.getMonth() + 1;
var day = date.getDate();
if (month < 10) {
    month = "0" + month;
 }
 if (day < 10) {
      day = "0" + day;
 }
var enTime = year + "-" + month + "-" + day;