javascript Date 操作日期-蒲公英云

                         javascript Date 操作日期
/**
 * 功能：获取中文星期
 * 参数：date日期类型
 */
function getChineseWeek(date) {
    var week = date.getDay();
    var chineseWeek = "";
    switch(week) {
        case 0: chineseWeek = "星期日"; break;
        case 1: chineseWeek = "星期一"; break;
        case 2: chineseWeek = "星期二"; break;
        case 3: chineseWeek = "星期三"; break;
        case 4: chineseWeek = "星期四"; break;
        case 5: chineseWeek = "星期五"; break;
        case 6: chineseWeek = "星期六"; break;
    }
    return chineseWeek;
}
/**
 * 功能：获取指定日期格式化后的前一天字符串
 * 参数：date 日期字符串
 * 参数：format 格式化字符串 yyyymmdd、yyyy-MM-dd、yyyy-MM-dd hh:mm:ss
 */
function beforeDayByDate(date, format) {
    var oneDay = 1000 * 60 * 60 * 24;
    var retDate = "";
    if (typeof date != "string" || date.length != 8) {
        return;
    }
    var year  = parseInt(date.substring(0, 4));
    var month = parseInt(date.substring(4, 6)) - 1;
    var day   = parseInt(date.substring(6, 8));
    var _date = new Date();
    _date.setFullYear(year);
    _date.setMonth(month);
    _date.setDate(day);
    _date = new Date(_date.getTime() - oneDay);
    switch(format) {
        case "yyyy-MM-dd":          retDate = getDate1(_date); break;
        case "yyyy-MM-dd hh:mm:ss": retDate = getDate2(_date); break;
        case "yyyymmdd":            retDate = getDate3(_date); break;
        default: retDate = "date format error.";
    }
    return retDate;
}
/**
 * 功能：获取指定日期格式化后的后一天字符串
 * 参数：date 日期字符串
 * 参数：format 格式化字符串 yyyymmdd、yyyy-MM-dd、yyyy-MM-dd hh:mm:ss
 */
function nextDayByDate(date, format) {
    var oneDay = 1000 * 60 * 60 * 24;
    var retDate = "";
    if (typeof date != "string" || date.length != 8) {
        return;
    }
    var year  = parseInt(date.substring(0, 4));
    var month = parseInt(date.substring(4, 6)) - 1;
    var day   = parseInt(date.substring(6, 8));
    var _date = new Date();
    _date.setFullYear(year);
    _date.setMonth(month);
    _date.setDate(day);
    _date = new Date(_date.getTime() + oneDay);
    switch(format) {
        case "yyyy-MM-dd":          retDate = getDate1(_date); break;
        case "yyyy-MM-dd hh:mm:ss": retDate = getDate2(_date); break;
        case "yyyymmdd":            retDate = getDate3(_date); break;
        default: retDate = "date format error.";
    }
    return retDate;
}
/**
 * 功能：获取指定日期格式化后的符串
 * 参数：date 日期字符串
 * 参数：format 格式化字符串 yyyymmdd、yyyy-MM-dd、yyyy-MM-dd hh:mm:ss
 */
function formatDate(date, format) {
    var retDate = "";
    if (typeof date != "string" || date.length != 8) {
        return;
    }
    var year  = parseInt(date.substring(0, 4));
    var month = parseInt(date.substring(4, 6)) - 1;
    var day   = parseInt(date.substring(6, 8));
    var _date = new Date();
    _date.setFullYear(year);
    _date.setMonth(month);
    _date.setDate(day);
    switch(format) {
        case "yyyy-MM-dd":          retDate = getDate1(_date); break;
        case "yyyy-MM-dd hh:mm:ss": retDate = getDate2(_date); break;
        case "yyyymmdd":            retDate = getDate3(_date); break;
        default: retDate = "date format error.";
    }
    return retDate;
}
/**
 * 功能：当前日期前一天
 * 参数format格式有：
 * 1、yyyy-MM-dd 
 * 2、yyyy-MM-dd hh:mm:ss
 * 3、yyyymmdd
 */
function beforeDay(format) {
    var oneDay = 1000 * 60 * 60 * 24;
    var date = "";
    switch(format) {
        case "yyyy-MM-dd": date = getDate1(new Date(Date.now() - oneDay)); break;
        case "yyyy-MM-dd hh:mm:ss": date = getDate2(new Date(Date.now() - oneDay)); break;
        default: date = "date format error.";
    }
    return date;
}
/**
 * 功能：当前日期后一天
 * 参数format格式有：
 * 1、yyyy-MM-dd 
 * 2、yyyy-MM-dd hh:mm:ss
 */
function nextDay(format) {
    var oneDay = 1000 * 60 * 60 * 24;
    var date = "";
    switch(format) {
        case "yyyy-MM-dd": date = getDate1(new Date(Date.now() + oneDay)); break;
        case "yyyy-MM-dd hh:mm:ss": date = getDate2(new Date(Date.now() + oneDay)); break;
        default: date = "date format error.";
    }
    return date;
}
/**
 * 功能：根据指定格式获取格式化后的日期字符串
 * 参数format格式有：
 * 1、yyyy-MM-dd 
 * 2、yyyy-MM-dd hh:mm:ss
 * 3、yyyymmdd
 */
function getCurrentTime(format) {
    var date = "";
    switch(format) {
        case "yyyy-MM-dd":          date = getDate1(new Date()); break;
        case "yyyy-MM-dd hh:mm:ss": date = getDate2(new Date()); break;
        case "yyyymmdd":            date = getDate3(new Date()); break;
        default: date = "date format error.";
    }
    return date;
}
/**
 * 功能：返回yyyymmdd格式日期字符串
 * 参数：date Date类型
 */
function getDate3(date) {
    var _date = "";
    var year  = date.getFullYear();
    var month = addZero(date.getMonth() + 1);
    var day   = addZero(date.getDate());
    _date = year + month + day;
    return _date;
}
/**
 * 功能：返回yyyy-MM-dd格式日期字符串
 * 参数：date Date类型
 */
function getDate1(date) {
    var _date = "";
    var year  = date.getFullYear();
    var month = addZero(date.getMonth() + 1);
    var day   = addZero(date.getDate());
    _date = year + "-" + month + "-" + day;
    return _date;
}
/**
 * 功能：返回yyyy-MM-dd hh:mm:ss格式日期字符串
 * 参数：date Date类型
 */
function getDate2(date) {
    var _date  = "";
    var year   = date.getFullYear();
    var month  = addZero(date.getMonth() + 1);
    var day    = addZero(date.getDate());
    var hours  = addZero(date.getHours());
    var minute = addZero(date.getMinutes());
    var second = addZero(date.getSeconds());
    _date = year + "-" + month + "-" + day + " " + hours + ":" + minute + ":" + second;
    return _date;
}
/**
 * 功能：前补0
 * 参数：str 字符串类型
 */
function addZero(str) {
    if ((typeof str) != "string") {
        str += "";
    }
    if (str.length < 2) {
        str = "0" + str;
    }
    return str;
}