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I'm fetching users input in jquery datetime picker in format like this
2017-02-07 10:05
which is fine. My question is: how can I check is this users input today or not?
After getting suggestion from this question this is how you can do that. First setting the date constructor for today and the test date then set their time portion equal to zero and compare.
There are also other cool plugins to achieve the same more easily and more accurately like dateJs , momentJs
Using momentJs
var inputDate = new Date("2017-02-07 10:05");
var isToday = inputDate.isSame(new Date(), "day");
Using dateJs
var isToday = Date.equals(Date.today(), new Date("2017-02-07 10:05").clearTime());
Using native JavaScript date
var inputDate = new Date("2017-02-07 10:05");
var todaysDate = new Date();
var isToday = (inputDate.setHours(0, 0, 0, 0) == todaysDate.setHours(0, 0, 0, 0));
console.log(isToday);
Simplest Way...
var date = new Date('2017-02-07 10:05');
var now = new Date();
console.log(now.toString().substring(4, 15) == date.toString().substring(4, 15));
How about something like this:
<html>
<head>
</head>
<body>
<script>
var dateString = "2017-02-09 10:05";
var dateObj = new Date(dateString);
var ddSomeDate = dateObj.getDate();
var mmSomeDate = dateObj.getMonth()+1; //January is 0!
var yyyySomeDate = dateObj.getFullYear();
var dateObjToday = new Date();
var ddCurrentDate = dateObjToday.getDate();
var mmCurrentDate = dateObjToday.getMonth()+1; //January is 0!
var yyyyCurrentDate = dateObjToday.getFullYear();
if (ddSomeDate == ddCurrentDate &&
mmSomeDate == mmCurrentDate &&
yyyySomeDate == yyyyCurrentDate)
console.log("Same day");
else
console.log("NOT same day");
</script>
</body>
</html>
Try this is used to check the date is today or not
Here is Jquery code
$('#dp').datepicker({
onSelect: function(dateText) {
var today = new Date(new Date().getFullYear(), new Date().getMonth(), new Date().getDate()).getTime();
var selected = new Date(dateText).getTime();
if (today > selected) alert('prior to today');
else if (today < selected) alert('after today');
else alert('today');
}
});
And My html code
<input id="dp"/>
Demo here
http://jsfiddle.net/j08691/yBDVJ/
You must parse the date and use this isDateToday function to check:
var date = new Date('2017-02-07 10:05');
var isToday = isDateToday(date);
function isDateToday(td){
var d = new Date();
return td.getDate() == d.getDate() && td.getMonth() == d.getMonth() && td.getFullYear() == d.getFullYear();
}
you can get the current Date-Month-year by:
var d = new Date();
var date = d.getDate();
var month = d.getMonth();
var year = d.getFullYear();
then match the user selected date, month and year by these values.
Try something like this:
var today = new Date();
today.setHours(0);
today.setMinutes(0);
today.setSeconds(0);
if (Date.parse(today) == Date.parse(selectedDate)) {
alert('today!');
} else {
alert('not today');
}
I have this function.
It's a validation for register page, need to check if the date is vaild.
I have another function which work well and doesnt run if validation fails.
I thought maybe its in the Validator itself , but as i said, i have another function (and another validator which calls the other function) that work well and I didnt manage to find any diffrences.
CODES:
Failing Function:
function CheckDate(sender, args)
{
var DateReg = document.getElementById("DateReg").value;
DateReg = DateReg.split('/');
var day = DateReg[0];
var month = DateReg[1];
var year = DateReg[2];
var CurrentYear = new Date().getFullYear();
args.IsValid = true;
if (day < 1 || day > 31 || month < 1 || month > 12 || year > CurrentYear || year < CurrentYear - 120)
{
args.IsValid = false; // לא תקין
}
return args.IsValid;
}
Failing Validator:
<asp:CustomValidator ID="CustomValidator1" ClientValidationFunction="CheckDate" runat="server" ErrorMessage="type age again"> </asp:CustomValidator>
Working Validator:
<asp:CustomValidator ID="CustomValidator2" ClientValidationFunction="CheckInterest" runat="server" ErrorMessage="choose interest"> </asp:CustomValidator>
Any suggestions?
Thanks
Modified version that will validate on a date in the following format "mm/dd/yyyy".
var btnRun = document.getElementById("btnRun");
btnRun.addEventListener('click',function(e){
CheckDate();
});
function CheckDate(sender, args)
{
var isValid = false;
var DateReg = document.getElementById("DateReg").value;
var date = new Date(DateReg);
var cDate = new Date();
var CurrentYear = cDate.getFullYear();
isValid = true;
var iday = date.getDay() + 1;
var iMonth = date.getMonth() + 1;
var iYear = date.getFullYear();
if (iday < 1 || iday > 31 || iMonth < 1 || iMonth > 12 || iYear > CurrentYear || iYear < CurrentYear - 120)
{
isValid = false;
}
console.log(isValid);//just used to show that it works
return isValid;
}
<input id="DateReg" />
<button id="btnRun">Run</button>
Ok; Got it
the getElementById did it
Changed it to
var DateReg = document.getElementById('<%=DateReg.ClientID %>').value;
Seems to work now
Trying to validate an age from one form i found this issue on the console of chrome.
this is my code:
<script type="text/javascript">
function CalAge() {
var dd = $("#day").val();
var mm = $("#month").val();
var yy = $("#year").val();
var age = 18;
var mydate = new Date();
mydate.setFullYear(yy, mm-1, dd);
var currdate = new Date();
currdate.setFullYear(currdate.getFullYear() - age);
if(dd !=0 || mm !=0 || yy !=0){ //whether one or all values havent been choosen
if ((currdate - mydate) < 18){
window.location = "http://www.google.com";
}
else{
alert("more than 18");
}
}
else{
alert("please register");
}
}
</script>
i wonder if is something to do with my code, because if i put the url relocation in somewhere else in the code (like on top of the conditions) it works just fine.
any suggestion
It's because if ((currdate - mydate) < 18) isn't evaluating to true.
In your example, currdate is the cutoff date for being 18 years old. Your condition should be:
if (currdate < mydate) { ... }
That is, if someone is born after the cutoff date (i.e., is less than 18 years old), then redirect to Google.
That's a good explanation given to the error... I think you have to replace the window.location with something like this: window.location.assign("http://www.google.com") and also use only one else to alert all your popups! If optional... Good luck!
Oookay! Use this:
`
function CalAge() {
var dd = $("#day").val();
var mm = $("#month").val();
var yy = $("#year").val();
var age = 18;
var mydate = new Date();
mydate.setFullYear(yy, mm-1, dd);
var currdate = new Date();
currdate.setFullYear(currdate.getFullYear() - age);
if(dd !=0 || mm !=0 || yy !=0){ //whether one or all values havent been choosen
var subit = currdate - mydate;
if (subit < 18){
window.location.href = "http://www.google.com";
}
else{
alert("more than 18");
}
}
else{
alert("please register");
}
}
</script>`
thanks good luck
I need to check if a date - a string in dd/mm/yyyy format -
falls between two other dates having the same format dd/mm/yyyy
I tried this, but it doesn't work:
var dateFrom = "02/05/2013";
var dateTo = "02/09/2013";
var dateCheck = "02/07/2013";
var from = Date.parse(dateFrom);
var to = Date.parse(dateTo);
var check = Date.parse(dateCheck );
if((check <= to && check >= from))
alert("date contained");
I used debugger and checked, the to and from variables have isNaN value.
Could you help me?
Date.parse supports the format mm/dd/yyyy not dd/mm/yyyy. For the latter, either use a library like moment.js or do something as shown below
var dateFrom = "02/05/2013";
var dateTo = "02/09/2013";
var dateCheck = "02/07/2013";
var d1 = dateFrom.split("/");
var d2 = dateTo.split("/");
var c = dateCheck.split("/");
var from = new Date(d1[2], parseInt(d1[1])-1, d1[0]); // -1 because months are from 0 to 11
var to = new Date(d2[2], parseInt(d2[1])-1, d2[0]);
var check = new Date(c[2], parseInt(c[1])-1, c[0]);
console.log(check > from && check < to)
Instead of comparing the dates directly, compare the getTime() value of the date. The getTime() function returns the number of milliseconds since Jan 1, 1970 as an integer-- should be trivial to determine if one integer falls between two other integers.
Something like
if((check.getTime() <= to.getTime() && check.getTime() >= from.getTime())) alert("date contained");
Try what's below. It will help you...
Fiddle : http://jsfiddle.net/RYh7U/146/
Script :
if(dateCheck("02/05/2013","02/09/2013","02/07/2013"))
alert("Availed");
else
alert("Not Availed");
function dateCheck(from,to,check) {
var fDate,lDate,cDate;
fDate = Date.parse(from);
lDate = Date.parse(to);
cDate = Date.parse(check);
if((cDate <= lDate && cDate >= fDate)) {
return true;
}
return false;
}
The answer that has 50 votes doesn't check for date in only checks for months. That answer is not correct. The code below works.
var dateFrom = "01/08/2017";
var dateTo = "01/10/2017";
var dateCheck = "05/09/2017";
var d1 = dateFrom.split("/");
var d2 = dateTo.split("/");
var c = dateCheck.split("/");
var from = new Date(d1); // -1 because months are from 0 to 11
var to = new Date(d2);
var check = new Date(c);
alert(check > from && check < to);
This is the code posted in another answer and I have changed the dates and that's how I noticed it doesn't work
var dateFrom = "02/05/2013";
var dateTo = "02/09/2013";
var dateCheck = "07/07/2013";
var d1 = dateFrom.split("/");
var d2 = dateTo.split("/");
var c = dateCheck.split("/");
var from = new Date(d1[2], parseInt(d1[1])-1, d1[0]); // -1 because months are from 0 to 11
var to = new Date(d2[2], parseInt(d2[1])-1, d2[0]);
var check = new Date(c[2], parseInt(c[1])-1, c[0]);
alert(check > from && check < to);
Simplified way of doing this based on the accepted answer.
In my case I needed to check if current date (Today) is pithing the range of two other dates so used newDate() instead of hardcoded values but you can get the point how you can use hardcoded dates.
var currentDate = new Date().toJSON().slice(0,10);
var from = new Date('2020/01/01');
var to = new Date('2020/01/31');
var check = new Date(currentDate);
console.log(check > from && check < to);
I have created customize function to validate given date is between two dates or not.
var getvalidDate = function(d){ return new Date(d) }
function validateDateBetweenTwoDates(fromDate,toDate,givenDate){
return getvalidDate(givenDate) <= getvalidDate(toDate) && getvalidDate(givenDate) >= getvalidDate(fromDate);
}
Here is a Date Prototype method written in typescript:
Date.prototype.isBetween = isBetween;
interface Date { isBetween: typeof isBetween }
function isBetween(minDate: Date, maxDate: Date): boolean {
if (!this.getTime) throw new Error('isBetween() was called on a non Date object');
return !minDate ? true : this.getTime() >= minDate.getTime()
&& !maxDate ? true : this.getTime() <= maxDate.getTime();
};
I did the same thing that #Diode, the first answer, but i made the condition with a range of dates, i hope this example going to be useful for someone
e.g (the same code to example with array of dates)
var dateFrom = "02/06/2013";
var dateTo = "02/09/2013";
var d1 = dateFrom.split("/");
var d2 = dateTo.split("/");
var from = new Date(d1[2], parseInt(d1[1])-1, d1[0]); // -1 because months are from 0 to 11
var to = new Date(d2[2], parseInt(d2[1])-1, d2[0]);
var dates= ["02/06/2013", "02/07/2013", "02/08/2013", "02/09/2013", "02/07/2013", "02/10/2013", "02/011/2013"];
dates.forEach(element => {
let parts = element.split("/");
let date= new Date(parts[2], parseInt(parts[1]) - 1, parts[0]);
if (date >= from && date < to) {
console.log('dates in range', date);
}
})
Try this:
HTML
<div id="eventCheck"></div>
JAVASCRIPT
// ----------------------------------------------------//
// Todays date
var today = new Date();
var dd = today.getDate();
var mm = today.getMonth()+1; //January is 0!
var yyyy = today.getFullYear();
// Add Zero if it number is between 0-9
if(dd<10) {
dd = '0'+dd;
}
if(mm<10) {
mm = '0'+mm;
}
var today = yyyy + '' + mm + '' + dd ;
// ----------------------------------------------------//
// Day of event
var endDay = 15; // day 15
var endMonth = 01; // month 01 (January)
var endYear = 2017; // year 2017
// Add Zero if it number is between 0-9
if(endDay<10) {
endDay = '0'+endDay;
}
if(endMonth<10) {
endMonth = '0'+endMonth;
}
// eventDay - date of the event
var eventDay = endYear + '/' + endMonth + '/' + endDay;
// ----------------------------------------------------//
// ----------------------------------------------------//
// check if eventDay has been or not
if ( eventDay < today ) {
document.getElementById('eventCheck').innerHTML += 'Date has passed (event is over)'; // true
} else {
document.getElementById('eventCheck').innerHTML += 'Date has not passed (upcoming event)'; // false
}
Fiddle:
https://jsfiddle.net/zm75cq2a/
Suppose for example your date is coming like this & you need to install momentjs for advance date features.
let cmpDate = Thu Aug 27 2020 00:00:00 GMT+0530 (India Standard Time)
let format = "MM/DD/YYYY";
let startDate: any = moment().format(format);
let endDate: any = moment().add(30, "days").format(format);
let compareDate: any = moment(cmpDate).format(format);
var startDate1 = startDate.split("/");
var startDate2 = endDate.split("/");
var compareDate1 = compareDate.split("/");
var fromDate = new Date(startDate1[2], parseInt(startDate1[1]) - 1, startDate1[0]);
var toDate = new Date(startDate2[2], parseInt(startDate2[1]) - 1, startDate2[0]);
var checkDate = new Date(compareDate1[2], parseInt(compareDate1[1]) - 1, compareDate1[0]);
if (checkDate > fromDate && checkDate < toDate) {
... condition works between current date to next 30 days
}
This may feel a bit more intuitive. The parameter is just a valid date string.
This function returns true if the date passed as argument is in the current week, or false if not.
function isInThisWeek(dateToCheck){
// Create a brand new Date instance
const WEEK = new Date()
// create a date instance with the function parameter
//(format should be like dd/mm/yyyy or any javascript valid date format )
const DATEREF = new Date(dateToCheck)
// If the parameter is a not a valid date, return false
if(DATEREF instanceof Date && isNaN(DATEREF)){
console.log("invalid date format")
return false}
// Get separated date infos (the date of today, the current month and the current year) based on the date given as parameter
const [dayR, monthR, yearR] = [DATEREF.getDate(), DATEREF.getMonth(), DATEREF.getFullYear()]
// get Monday date by substracting the day index (number) in the week from the day value (count)
//in the month (like october 15th - 5 (-> saturday index)) and +1 because
//JS weirdly starts the week on sundays
const monday = (WEEK.getDate() - WEEK.getDay()) + 1
// get Saturday date
const sunday = monday + 6
// Start verification
if (yearR !== WEEK.getFullYear()) { console.log("WRONG YEAR"); return false }
if (monthR !== WEEK.getMonth()) { console.log("WRONG MONTH"); return false }
if(dayR >= monday && dayR <= sunday) { return true }
else {console.log("WRONG DAY"); return false}
}
Try this
var gdate='01-05-2014';
date =Date.parse(gdate.split('-')[1]+'-'+gdate.split('-')[0]+'-'+gdate.split('-')[2]);
if(parseInt(date) < parseInt(Date.now()))
{
alert('small');
}else{
alert('big');
}
Fiddle
This question is very generic, hence people who are using date libraries also check for the answer, but I couldn't find any answer for the date libraries, hence I am posting the answer for Luxon users.
const fromDate = '2022-06-01T00:00:00.000Z';
const toDate = '2022-06-30T23:59:59.999Z';
const inputDate = '2022-08-09T20:26:13.380Z';
if (
DateTime.fromISO(inputDate) >= DateTime.fromISO(fromDate) &&
DateTime.fromISO(inputDate) <= DateTime.fromISO(toDate)
) {
console.log('within range');
} else {
console.log('not in range');
}
Is it possible to check whether an end date is greater than or equal to a start date in Javascript? My dates are strings in the format 'dd/mm/yyyy'.
try this
var startDate = "05/01/2011";
var endDate = "09/01/2011";
var regExp = /(\d{1,2})\/(\d{1,2})\/(\d{2,4})/;
if(parseInt(endDate.replace(regExp, "$3$2$1")) > parseInt(startDate.replace(regExp, "$3$2$1"))){
alert("greater");
}
If the string format ('dd/mm/yyyy') doesn't change, this function should work:
function endAfterStart(start,end){
return new Date(start.split('/').reverse().join('/')) <
new Date(end.split('/').reverse().join('/'));
}
alert(endAfterStart('05/01/2011','09/01/2011')); //=> true
Or extend the Date.prototype:
Date.prototype.isBefore = Date.prototype.isBefore || function(dat){
return this < dat;
}
new Date('05/01/2011'.split('/').reverse().join('/'))
.before( new Date('09/01/2011'.split('/').reverse().join('/')) ); //=>true
Most simple way to do this.
function endAfterStart(start, end) {
var startDate = new Date(start);
var endDate = new Date(end);
return endDate.getTime() >= startDate.getTime();
}
function isDate(value)
{
var fromDate = document.getElementById("fromDate").value
var toDate= document.getElementById("toDate").value
//var curr_Date= new SimpleDateFormat("dd/mm/yyyy");
var dateRegEx = null;
dateRegEx = new RegExp(/^(((0[1-9]|[12]\d|3[01])\/(0[13578]|1[02])\/((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)\/(0[13456789]|1[012])\/((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$/g);
if (dateRegEx.test(fromDate)){
}
else{
alert("Invalid from date");
return false;
}
dateRegEx = new RegExp(/^(((0[1-9]|[12]\d|3[01])\/(0[13578]|1[02])\/((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)\/(0[13456789]|1[012])\/((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$/g);
if(dateRegEx.test(toDate)) {
}
else{
alert("Invalid to date");
return false;
}
var stDate = new Date(fromDate);
var enDate = new Date(toDate);
var compDate = enDate - stDate;
//var fdate=enDate-curr_Date;
if(compDate >= 0)
return true;
else
{
alert("To Date cannot be smaller than From Date");
return false;
}
/**/
}
This will work for Leap years also..in dd/mm/yyyy format(not any other format).
Took me some time to find, but JQuery implements this exact functionality with DatePicker date-range. (Source code available in link as well.)
Moment.js also handles date comparisons very well using the diff function.
check out this function
function CompareDates()
{
var str1 = document.getElementById("Fromdate").value;
var str2 = document.getElementById("Todate").value;
var dt1 = parseInt(str1.substring(0,2),10);
var mon1 = parseInt(str1.substring(3,5),10);
var yr1 = parseInt(str1.substring(6,10),10);
var dt2 = parseInt(str2.substring(0,2),10);
var mon2 = parseInt(str2.substring(3,5),10);
var yr2 = parseInt(str2.substring(6,10),10);
var date1 = new Date(yr1, mon1, dt1);
var date2 = new Date(yr2, mon2, dt2);
if(date2 < date1)
{
alert("To date cannot be greater than from date");
return false;
}
else
{
alert("Submitting ...");
document.form1.submit();
}
}
Try this,
function isDateCompare(){
var leadDate = document.getElementById('strDate').value;
var closeDate = document.getElementById('strDateClosed').value;
var date1 = new Date();
date1.setFullYear(leadDate.substr(6,4),(leadDate.substr(3,2)-1),leadDate.substr(0,2));
var date2 = new Date();
date2.setFullYear(closeDate.substr(6,4),(closeDate.substr(3,2)-1),closeDate.substr(0,2));
if (date1> date2)
{
alert("Expected Closed date cannot be less than Lead date.");
return false;
}
else
{
alert("true");
return false;
}
}
First use this function will convert string to Date type in js:
function common_getDateFromUI(str) {
var arr = str.split("/");
var returnDate = new Date(arr[2], arr[1] - 1, arr[0], 0, 0, 0, 0);
return returnDate;
}
Second: after you get the javascript date type, you just compare it as normal type like date1 > date2 or date1 == date2.
Or use this function to get the difference date between date:
function CalendarDays(startDate, endDate) {
if (endDate < startDate)
return 0;
// Calculate days between dates
var millisecondsPerDay = 86400 * 1000; // Day in milliseconds
startDate.setHours(0, 0, 0, 1); // Start just after midnight
endDate.setHours(23, 59, 59, 999); // End just before midnight
var diff = endDate - startDate; // Milliseconds between datetime objects
var days = Math.round(diff / millisecondsPerDay);
return days;
}
Follow this link is a simple demo to get difference days between dates. Link demo here
if (iForm.DiddfromDate.value == "")
{
alert(" Please enter a value");
iForm.DiddfromDate.focus();
return false;
}
if (iForm.DiddtoDate.value == "")
{
alert(" Please enter a value");
iForm.DiddtoDate.focus();
return false;
}
try {
var d1 = iForm.DiddfromDate.value.substr(0, 2);
var m1 = iForm.DiddfromDate.value.substr(3, 2);
var y1 = iForm.DiddfromDate.value.substr(6, 4);
var StrDate = m1 + "/" + d1 + "/" + y1;
var d2 = iForm.DiddtoDate.value.substr(0, 2);
var m2 = iForm.DiddtoDate.value.substr(3, 2);
var y2 = iForm.DiddtoDate.value.substr(6, 4);
var EndDate = m2 + "/" + d2 + "/" + y2;
var startDate = new Date(StrDate);
var endDate = new Date(EndDate);
if (startDate > endDate) {
alert('To date should be greater than From date.');
iForm.DiddfromDate.value = '';
iForm.DiddtoDate.value = '';
iForm.DiddfromDate.focus();
return false;
}
} catch (e) { alert(e.Description); }
return true;
Just convert the string to date and use getTime method of Date object to compare it.
Example code
var startDate = '04/04/2015'; //date in dd/mm/yyyy format
var endDate = '05/04/2015';
function compareDates(sDate, eDate) {
var dateTime1 = new Date(sDate).getTime(),
dateTime2 = new Date(eDate).getTime();
var diff = dateTime2 - dateTime1;
if (diff > 0) {
alert("endDate is greater than startDate");
return true;
}
}
compareDates(startDate, endDate);
Working Fiddle