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  • Js获取当前日期时间及其它操作

    var myDate = new Date();
    myDate.getYear();
    //获取当前年份(2位)
    myDate.getFullYear();
    //获取完整的年份(4位,1970-????)
    myDate.getMonth();
    //获取当前月份(0-11,0代表1月)
    myDate.getDate();
    //获取当前日(1-31)
    myDate.getDay();
    //获取当前星期X(0-6,0代表星期天)
    myDate.getTime();
    //获取当前时间(从1970.1.1开始的毫秒数)
    myDate.getHours();
    //获取当前小时数(0-23)
    myDate.getMinutes();
    //获取当前分钟数(0-59)
    myDate.getSeconds();
    //获取当前秒数(0-59)
    myDate.getMilliseconds();
    //获取当前毫秒数(0-999)
    myDate.toLocaleDateString();
    //获取当前日期
    var mytime=myDate.toLocaleTimeString();
    //获取当前时间
    myDate.toLocaleString( );
    //获取日期与时间

    日期时间脚本库方法列表

    Date.prototype.isLeapYear
    判断闰年
    Date.prototype.Format 日期格式化
    Date.prototype.DateAdd
    日期计算
    Date.prototype.DateDiff 比较日期差
    Date.prototype.toString
    日期转字符串
    Date.prototype.toArray 日期分割为数组
    Date.prototype.DatePart
    取日期的部分信息
    Date.prototype.MaxDayOfDate 取日期所在月的最大天数
    Date.prototype.WeekNumOfYear
    判断日期所在年的第几周
    StringToDate 字符串转日期型
    IsValidDate 验证日期有效性
    CheckDateTime
    完整日期时间检查
    daysBetween 日期天数差

    js代码:

    //---------------------------------------------------
    //
    判断闰年
    //---------------------------------------------------
    Date.prototype.isLeapYear
    = function()
    {

    return
    (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));
    }

    //---------------------------------------------------
    //
    日期格式化
    // 格式 YYYY/yyyy/YY/yy 表示年份
    // MM/M
    月份
    // W/w 星期
    // dd/DD/d/D 日期
    //
    hh/HH/h/H 时间
    // mm/m 分钟
    // ss/SS/s/S

    //---------------------------------------------------
    Date.prototype.Format
    =
    function(formatStr)
    {

    var str = formatStr;
    var Week =
    ['日','一','二','三','四','五','六'];

    str=str.replace(/yyyy|YYYY/,this.getFullYear());

    str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() %
    100).toString():'0' + (this.getYear() %
    100));

    str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():'0' +
    this.getMonth());

    str=str.replace(/M/g,this.getMonth());

    str=str.replace(/w|W/g,Week[this.getDay()]);

    str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' +
    this.getDate());

    str=str.replace(/d|D/g,this.getDate());

    str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():'0' +
    this.getHours());

    str=str.replace(/h|H/g,this.getHours());

    str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():'0' +
    this.getMinutes());

    str=str.replace(/m/g,this.getMinutes());

    str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():'0'
    + this.getSeconds());

    str=str.replace(/s|S/g,this.getSeconds());

    return
    str;
    }

    //+---------------------------------------------------
    //|
    求两个时间的天数差 日期格式为
    YYYY-MM-dd
    //+---------------------------------------------------
    function
    daysBetween(DateOne,DateTwo)
    {

    var OneMonth = DateOne.substring(5,DateOne.lastIndexOf
    ('-'));
    var OneDay =
    DateOne.substring(DateOne.length,DateOne.lastIndexOf
    ('-')+1);
    var OneYear =
    DateOne.substring(0,DateOne.indexOf
    ('-'));

    var TwoMonth =
    DateTwo.substring(5,DateTwo.lastIndexOf
    ('-'));
    var TwoDay =
    DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf
    ('-')+1);
    var TwoYear =
    DateTwo.substring(0,DateTwo.indexOf
    ('-'));

    var
    cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)-
    Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);

    return
    Math.abs(cha);
    }

    //+---------------------------------------------------
    //|
    日期计算
    //+---------------------------------------------------
    Date.prototype.DateAdd
    = function(strInterval, Number) {
    var
    dtTmp = this;
    switch (strInterval)
    {
    case 's'
    :return new Date(Date.parse(dtTmp) + (1000 *
    Number));
    case 'n'
    :return new Date(Date.parse(dtTmp) + (60000 *
    Number));
    case 'h'
    :return new Date(Date.parse(dtTmp) + (3600000 *
    Number));
    case 'd'
    :return new Date(Date.parse(dtTmp) + (86400000 *
    Number));
    case 'w'
    :return new Date(Date.parse(dtTmp) + ((86400000 * 7) *
    Number));
    case 'q'
    :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3,
    dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(),
    dtTmp.getSeconds());

    case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number,
    dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(),
    dtTmp.getSeconds());

    case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(),
    dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(),
    dtTmp.getSeconds());

    }
    }

    //+---------------------------------------------------
    //|
    比较日期差 dtEnd
    格式为日期型或者有效日期格式字符串
    //+---------------------------------------------------
    Date.prototype.DateDiff
    = function(strInterval, dtEnd) {
    var
    dtStart = this;
    if (typeof dtEnd == 'string'
    )//如果是字符串转换为日期型

    {
    dtEnd =
    StringToDate(dtEnd);

    }
    switch (strInterval)
    {
    case 's'
    :return parseInt((dtEnd - dtStart) /
    1000);
    case 'n'
    :return parseInt((dtEnd - dtStart) /
    60000);
    case 'h'
    :return parseInt((dtEnd - dtStart) /
    3600000);
    case 'd'
    :return parseInt((dtEnd - dtStart) /
    86400000);
    case 'w'
    :return parseInt((dtEnd - dtStart) / (86400000 *
    7));
    case 'm' :return
    (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) -
    (dtStart.getMonth()+1);

    case 'y' :return dtEnd.getFullYear() -
    dtStart.getFullYear();

    }
    }

    //+---------------------------------------------------
    //|
    日期输出字符串,重载了系统的toString方法
    //+---------------------------------------------------
    Date.prototype.toString
    = function(showWeek)
    {

    var myDate= this;
    var str =
    myDate.toLocaleDateString();
    if
    (showWeek)

    {
    var Week =
    ['日','一','二','三','四','五','六'];

    str += ' 星期' + Week[myDate.getDay()];

    }
    return
    str;
    }

    //+---------------------------------------------------
    //|
    日期合法性验证
    //|
    格式为:YYYY-MM-DD或YYYY/MM/DD
    //+---------------------------------------------------
    function
    IsValidDate(DateStr)
    {

    var sDate=DateStr.replace(/(^s+|s+$)/g,'');
    //去两边空格;
    if(sDate=='') return
    true;

    //如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为''

    //数据库中,合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式

    var s = sDate.replace(/[d]{ 4,4 }[-/]{ 1 }[d]{ 1,2 }[-/]{ 1 }[d]{ 1,2
    }/g,'');
    if (s=='')
    //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D

    {
    var t=new
    Date(sDate.replace(/-/g,'/'));

    var ar =
    sDate.split(/[-/:]/);

    if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] !=
    t.getDate())

    {

    //alert('错误的日期格式!格式为:YYYY-MM-DD或YYYY/MM/DD。注意闰年。');

    return false;

    }

    }

    else

    {

    //alert('错误的日期格式!格式为:YYYY-MM-DD或YYYY/MM/DD。注意闰年。');

    return false;

    }
    return
    true;
    }

    //+---------------------------------------------------
    //|
    日期时间检查
    //| 格式为:YYYY-MM-DD
    HH:MM:SS
    //+---------------------------------------------------
    function
    CheckDateTime(str)
    {
    var
    reg = /^(d+)-(d{ 1,2 })-(d{ 1,2 }) (d{ 1,2 }):(d{ 1,2 }):(d{ 1,2
    })$/;
    var r =
    str.match(reg);
    if(r==null)return
    false;

    r[2]=r[2]-1;
    var d= new
    Date(r[1],r[2],r[3],r[4],r[5],r[6]);

    if(d.getFullYear()!=r[1])return false;

    if(d.getMonth()!=r[2])return false;

    if(d.getDate()!=r[3])return false;

    if(d.getHours()!=r[4])return false;

    if(d.getMinutes()!=r[5])return false;

    if(d.getSeconds()!=r[6])return false;

    return
    true;
    }

    //+---------------------------------------------------
    //|
    把日期分割成数组
    //+---------------------------------------------------
    Date.prototype.toArray
    = function()
    {
    var myDate
    = this;
    var myArray =
    Array();
    myArray[0] =
    myDate.getFullYear();
    myArray[1] =
    myDate.getMonth();
    myArray[2] =
    myDate.getDate();
    myArray[3] =
    myDate.getHours();
    myArray[4] =
    myDate.getMinutes();
    myArray[5] =
    myDate.getSeconds();
    return
    myArray;
    }

    //+---------------------------------------------------
    //|
    取得日期数据信息
    //| 参数 interval 表示数据类型
    //| y 年 m月 d日 w星期
    ww周 h时 n分
    s秒
    //+---------------------------------------------------
    Date.prototype.DatePart
    = function(interval)
    {

    var myDate = this;
    var
    partStr='';
    var Week =
    ['日','一','二','三','四','五','六'];
    switch
    (interval)

    {
    case 'y'
    :partStr =
    myDate.getFullYear();break;

    case 'm' :partStr =
    myDate.getMonth()+1;break;

    case 'd' :partStr =
    myDate.getDate();break;

    case 'w' :partStr =
    Week[myDate.getDay()];break;

    case 'ww' :partStr =
    myDate.WeekNumOfYear();break;

    case 'h' :partStr =
    myDate.getHours();break;

    case 'n' :partStr =
    myDate.getMinutes();break;

    case 's' :partStr = myDate.getSeconds();break;

    }
    return
    partStr;
    }

    //+---------------------------------------------------
    //|
    取得当前日期所在月的最大天数
    //+---------------------------------------------------
    Date.prototype.MaxDayOfDate
    = function()
    {
    var myDate
    = this;
    var ary =
    myDate.toArray();
    var date1 = (new
    Date(ary[0],ary[1]+1,1));
    var date2 =
    date1.dateAdd(1,'m',1);
    var result =
    dateDiff(date1.Format('yyyy-MM-dd'),date2.Format('yyyy-MM-dd'));

    return
    result;
    }
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  • 原文地址:https://www.cnblogs.com/zhoudawei/p/7504128.html
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