JAVASCRIPT之DATE日期格式化

末蓝、 2022-07-12 03:25 185阅读 0赞

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 秒  
    //---------------------------------------------------  
    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;  
    }  
      
    //+---------------------------------------------------  
    //| 取得当前日期所在周是一年中的第几周  
    //+---------------------------------------------------  
    Date.prototype.WeekNumOfYear = function()  
    {   
        var myDate = this;  
        var ary = myDate.toArray();  
        var year = ary[0];  
        var month = ary[1]+1;  
        var day = ary[2];  
        document.write('< script language=VBScript\> \n');  
        document.write('myDate = Datue(''+month+'-'+day+'-'+year+'') \n');  
        document.write('result = DatePart('ww', myDate) \n');  
        document.write(' \n');  
        return result;  
    }  
      
    //+---------------------------------------------------  
    //| 字符串转成日期类型   
    //| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd  
    //+---------------------------------------------------  
    function StringToDate(DateStr)  
    {   
      
        var converted = Date.parse(DateStr);  
        var myDate = new Date(converted);  
        if (isNaN(myDate))  
        {   
            //var delimCahar = DateStr.indexOf('/')!=-1?'/':'-';  
            var arys= DateStr.split('-');  
            myDate = new Date(arys[0],--arys[1],arys[2]);  
        }  
        return myDate;  
    }  
     
    若要显示:当前日期加时间(如:2009-06-12 12:00)
    function CurentTime()
    { 
        var now = new Date();
       
        var year = now.getFullYear();       //年
        var month = now.getMonth() + 1;     //月
        var day = now.getDate();            //日
       
        var hh = now.getHours();            //时
        var mm = now.getMinutes();          //分
       
        var clock = year + "-";
       
        if(month < 10)
            clock += "0";
       
        clock += month + "-";
       
        if(day < 10)
            clock += "0";
           
        clock += day + " ";
       
        if(hh < 10)
            clock += "0";
           
        clock += hh + ":";
        if (mm < 10) clock += '0'; 
        clock += mm; 
        return(clock); 
    }

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