JS to get the current date and time and other operations

JS to get the current date and time

var myDate = new Date();

myDate.getYear(); //Get the current year (2 digits) myDate.getFullYear(); //Get the full year (4 digits, 1970-????) myDate.getMonth(); //Get the current month ( 0-11,0 represents January) myDate.getDate(); //Get the current day (1-31) myDate.getDay(); //Get the current week X (0-6,0 represent Sunday) myDate.getTime( ); //Get the current time (the number of milliseconds since 1970.1.1) myDate.getHours(); //Get the current hour (0-23) myDate.getMinutes(); //Get the current minute (0-59 ) myDate.getSeconds(); //Get the current number of seconds (0-59) myDate.getMilliseconds(); //Get the current number of milliseconds (0-999) myDate.toLocaleDateString(); //Get the current date var mytime=myDate .toLocaleTimeString(); //Get the current time myDate.toLocaleString( ); //Get the date and time

List of datetime script library methods

Date .prototype.isLeapYear //Judge leap year Date.prototype.Format
//Date formatting
Date.prototype.DateAdd //Date calculation
Date.prototype.DateDiff //Compare date difference
Date.prototype.toString //Date to string
Date .prototype.toArray //The date is divided into arrays Date.prototype.DatePart //
The partial information of the
date is taken Date.prototype.MaxDayOfDate //The maximum number of days
in the month of the date is taken Date.prototype.WeekNumOfYear //The number of the year in which the date is determined Week
StringToDate //String to date type
IsValidDate //Verify date validity
CheckDateTime //Complete date and time check
daysBetween //Date days difference

Determining leap years

Date.prototype.isLeapYear = function() { return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0))); }

date format
// format YYYY/yyyy/YY/yy for year // MM/M month // W/w week // dd/DD/d/D date // hh/HH/h/H time // mm /m minutes // ss/SS/s/S seconds

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);
}

若要显示:当前日期加时间(如:2018-06-12 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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文章来源：http://www.cnblogs.com/carekee/articles/1678041.html

JS to get the current date and time and other operations

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