easyui datetimebox 赋值无效

var now = new Date();
var opt = $("#mdoperatetime").datetimebox("getValue");
//$("#mdoperatetime").val(formatterEDate(now));
$("#mdoperatetime").datetimebox("setText",formatterEDate(now));
//$("#mdoperatetime").datetimebox("setValue",formatterEDate(now));
function formatterEDate(date) {
var year = date.getFullYear();
var month = date.getMonth()+1; //月份+1

var day = date.getDate();
var hour = date.getHours();
var minutes = date.getMinutes();
var second = date.getSeconds();
//return month+"/"+day+"/"+year+" "+hour+":"+minutes +":"+second;
return year+"-"+month+"-"+day+" "+hour+":"+minutes +":"+second;
};
注释部分都是各种尝试，都不起作用

https://www.cnblogs.com/mr-wuxiansheng/p/6308796.html