将序列化成json格式后日期(毫秒数)转成日期格式

//使用浏览器兼容的方式创建 异步对象
function createXhr() {
    var xhobj = false;
    try {
        xhobj = new ActiveXObject("Msxml2.XMLHTTP"); // ie msxml3.0+
    } catch (e) {
        try {
            xhobj = new ActiveXObject("Microsoft.XMLHTTP"); //ie msxml2.6
        } catch (e2) {
            xhobj = false;
        }
    }
    if (!xhobj && typeof XMLHttpRequest != 'undefined') {// Firefox, Opera 8.0+, Safari
        xhobj = new XMLHttpRequest();
    }
    return xhobj;
}
//将序列化成json格式后日期(毫秒数)转成日期格式
function changeDateFormat(cellval) {
    var date = new Date(parseInt(cellval.replace("/Date(", "").replace(")/", ""), 10));
    var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;
    var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
    return date.getFullYear() + "-" + month + "-" + currentDate;
}