js gets the current date, time, and other actions summary
var myDate = new Date();
myDate.getYear(); // Get the current year (2 position )
myDate.getFullYear(); // Get the full year (4 position ,1970-????)
myDate.getMonth(); // Get the current month (0-11,0 On behalf of 1 month )
myDate.getDate(); // Get current day (1-31)
myDate.getDay(); // Get current week X(0-6,0 On behalf of Sunday )
myDate.getTime(); // Get the current time ( from 1970.1.1 The number of milliseconds to start )
myDate.getHours(); // Gets the current number of hours (0-23)
myDate.getMinutes(); // Gets the current number of minutes (0-59)
myDate.getSeconds(); // Gets the current number of seconds (0-59)
myDate.getMilliseconds(); // Gets the current number of milliseconds (0-999)
myDate.toLocaleDateString(); // Get current date
var mytime=myDate.toLocaleTimeString(); // Get the current time
myDate.toLocaleString( ); // Get the date and timeDate time script library method list
Date.prototype.isLeapYear To determine leap year
Date.prototype.Format Date formatting
Date.prototype.DateAdd date
Date.prototype.DateDiff Comparison date difference
Date.prototype.toString Date to string
Date.prototype.toArray The dates are split into arrays
Date.prototype.DatePart Get partial information about the date
Date.prototype.MaxDayOfDate The maximum number of days in the month in which the date is taken
Date.prototype.WeekNumOfYear Determine the week of the year in which the date is
StringToDate String to date
IsValidDate Validate date
CheckDateTime Complete date and time check
daysBetween Date day differencejs code: //---------------------------------------------------
// To determine leap year
//---------------------------------------------------
Date.prototype.isLeapYear = function()
{
return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));
}
//---------------------------------------------------
// Date formatting
// format YYYY/yyyy/YY/yy Said the year
// MM/M in
// W/w week
// dd/DD/d/D The date of
// hh/HH/h/H time
// mm/m minutes
// ss/SS/s/S seconds
//---------------------------------------------------
Date.prototype.Format = function(formatStr)
{
var str = formatStr;
var Week = [' day ','1','2','3','4','5','6'];
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;
}
//+---------------------------------------------------
//| Find the number of days between the two times Date format is 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);
}
//+---------------------------------------------------
//| date
//+---------------------------------------------------
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());
}
}
//+---------------------------------------------------
//| Comparison date difference dtEnd The format is a date type or a valid date format string
//+---------------------------------------------------
Date.prototype.DateDiff = function(strInterval, dtEnd) {
var dtStart = this;
if (typeof dtEnd == 'string' )// If the string is converted to date type
{
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();
}
}
//+---------------------------------------------------
//| Date output string, overloading the system toString methods
//+---------------------------------------------------
Date.prototype.toString = function(showWeek)
{
var myDate= this;
var str = myDate.toLocaleDateString();
if (showWeek)
{
var Week = [' day ','1','2','3','4','5','6'];
str += ' week ' + Week[myDate.getDay()];
}
return str;
}
//+---------------------------------------------------
//| Validity verification of date
//| Format for: YYYY-MM-DD or YYYY/MM/DD
//+---------------------------------------------------
function IsValidDate(DateStr)
{
var sDate=DateStr.replace(/(^\s+|\s+$)/g,''); // Let's go to both sides ;
if(sDate=='') return true;
// If the format meets YYYY-(/)MM-(/)DD or YYYY-(/)M-(/)DD or YYYY-(/)M-(/)D or YYYY-(/)MM-(/)D Is replaced by ''
// In the database, the legal date can be :YYYY-MM/DD(2003-3/21), The database is automatically converted to YYYY-MM-DD format
var s = sDate.replace(/[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,'');
if (s=='') // Description format meets YYYY-MM-DD or YYYY-M-DD or YYYY-M-D or YYYY-MM-D
{
var t=new Date(sDate.replace(/\-/g,'/'));
var ar = sDate.split(/[-/:]/);
if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate())
{
//alert(' Wrong date format! Format for: YYYY-MM-DD or YYYY/MM/DD . Watch for leap years. ');
return false;
}
}
else
{
//alert(' Wrong date format! Format for: YYYY-MM-DD or YYYY/MM/DD . Watch for leap years. ');
return false;
}
return true;
}
//+---------------------------------------------------
//| Date and time check
//| Format for: YYYY-MM-DD HH:MM:SS
//+---------------------------------------------------
function CheckDateTime(str)
{
var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/;
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;
}
//+---------------------------------------------------
//| Split the date into an array
//+---------------------------------------------------
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;
}
//+---------------------------------------------------
//| Get date data information
//| parameter interval Represent data type
//| y years m month d day w week ww weeks h when n points s seconds
//+---------------------------------------------------
Date.prototype.DatePart = function(interval)
{
var myDate = this;
var partStr='';
var Week = [' day ','1','2','3','4','5','6'];
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;
}
//+---------------------------------------------------
//| Gets the maximum number of days in the month in which the current date occurs
//+---------------------------------------------------
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;
}
//+---------------------------------------------------
//| The week in which you get the current date is 1 The week of the year
//+---------------------------------------------------
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;
}
//+---------------------------------------------------
//| The string is converted to a date type
//| format 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;
}To display: current date plus time (e.g., 2009-06-1212:00)
function CurentTime()
{
var now = new Date();
var year = now.getFullYear(); // years
var month = now.getMonth() + 1; // month
var day = now.getDate(); // day
var hh = now.getHours(); // when
var mm = now.getMinutes(); // points
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);
}That’s all for this article, I hope you enjoy it.