代码：

function jsonDateFormat(jsonDate) {//json日期格式转换为正常格式

    try {

        var date = new Date(parseInt(jsonDate.replace("/Date(", "").replace(")/", ""), 10));

        var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;

        var day = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();

        var hours = date.getHours();

        var minutes = date.getMinutes();

        var seconds = date.getSeconds();

        var milliseconds = date.getMilliseconds();

        return date.getFullYear() + "-" + month + "-" + day + " " + hours + ":" + minutes + ":" + seconds + "." +  milliseconds;

    } catch (ex) {

        return "";

    }

}

function formatTime(val) {

    var re = /-?\d+/;

    var m = re.exec(val);

    var d = new Date(parseInt(m[0]));

    // 按【2012-02-13 09:09:09】的格式返回日期

    return d.format("yyyy/MM/dd hh:mm:ss");

}

Date.prototype.format = function (format) //author: meizz

{

    var o = {

        "M+": this.getMonth() + 1, //month

        "d+": this.getDate(),    //day

        "h+": this.getHours(),   //hour

        "m+": this.getMinutes(), //minute

        "s+": this.getSeconds(), //second

        "q+": Math.floor((this.getMonth() + 3) / 3),  //quarter

        "S": this.getMilliseconds() //millisecond

    }

    if (/(y+)/.test(format)) format = format.replace(RegExp.$1,

    (this.getFullYear() + "").substr(4 - RegExp.$1.length));

    for (var k in o) if (new RegExp("(" + k + ")").test(format))

        format = format.replace(RegExp.$1,

      RegExp.$1.length == 1 ? o[k] :

        ("00" + o[k]).substr(("" + o[k]).length));

    return format;

}

/**

 * * 计算 两个时间 间隔的小时数

 * @param {} startDate

 * @param {} endDate

 * @returns {}

 */

function GetDateDiff(startDate, endDate) {

    var startTime = new Date(Date.parse(startDate.replace(/-/g, "/"))).getTime();

    var endTime = new Date(Date.parse(endDate.replace(/-/g, "/"))).getTime();

    var dates = Math.abs((startTime - endTime)) / (1000 * 60 * 60);

    return dates;

}

用法：

var result =formatTime(json格式日期); 或者 jsonDateFormat(json格式日期)