JS 日期格式转换

//Json 数据年月日 返回 直接传入参数 如/Date(1379433600000)/
function GetDate(date) {
    if (date == null)
        return null;
    var index = 0;
    if (date < 0)
        index = date.indexOf(\'(\');
    else
        index = date.indexOf(\'(\') + 1;

    var endIndex = date.indexOf(\')\');

    var dat = date.substring(index, endIndex) - 1 + 1;
    var dateTime = new Date(dat);
    var year = dateTime.getFullYear();
    var month = dateTime.getMonth() + 1;
    var day = dateTime.getDate();

    if (month < 10) {
        month = "0" + month;
    }
    if (day < 10) {
        day = "0" + day;
    }

    return year + "-" + month + "-" + day;

}

//Json 数据年月日 返回 直接传入参数 如/Date(1379433600000)/
function GetDateByDate(dateTime) {
    var year = dateTime.getFullYear();
    var month = dateTime.getMonth() + 1;
    var day = dateTime.getDate();

    if (month < 10) {
        month = "0" + month;
    }
    if (day < 10) {
        day = "0" + day;
    }

    return year + "-" + month + "-" + day;

}


//Json 数据年月日 返回 直接传入参数 如/Date(1379433600000)/ 返回日期类型 2009年1月1日
function GetDateYMD(date) {
    if (date == null)
        return null;
    var index = 0;
    if (date < 0)
        index = date.indexOf(\'(\');
    else
        index = date.indexOf(\'(\') + 1;

    var endIndex = date.indexOf(\')\');

    var dat = date.substring(index, endIndex) - 1 + 1;
    var dateTime = new Date(dat);
    var year = dateTime.getFullYear();
    var month = dateTime.getMonth() + 1;
    var day = dateTime.getDate();

    if (month < 10) {
        month = "0" + month;
    }
    if (day < 10) {
        day = "0" + day;
    }

    return year + "年" + month + "月" + day + "日";

}