How to check condition for date greater than or smaller than in javascript?

Question

here inputtext gives the value entered in the textbox and hidden field value returns current value.

My code till now:

if (inputText.value.length != 0) {
    if (inputText.value < document.getElementById('<%=HdnDate.ClientID%>').value) {
        alert("Please ensure that the Date is greater than or equal to the Current Date.");
        inputText.value = "";
        return false;
    }
}

This might help [Compare dates with Javascript](http://stackoverflow.com/questions/492994/compare-dates-with-javascript) — khakiout, May 09 '14 at 06:58

RobG · Answer 1 · 2014-05-09T14:31:35.617

Assuming that the input date is in a format like d/m/y, then you can convert that to a date object using:

function parseDate(s) {
  var b = s.split(/\D+/g);
  return new Date(b[2], --b[1], b[0]);
}

which creates a date object for 00:00:00 on the specified date.

To compare to the current date, create a new Date object and set the time to 00:00:00.0:

var today = new Date();
today.setHours(0,0,0,0);

Then convert the string to a Date and compare the two:

var otherDay = parseDate('21/4/2013');

console.log(otherDay + ' less than ' + today + '?' + (otherDay < today)); // ... true

Edit

It seems your date format is 4-may-2014. In that case:

function parseDate(s) {
  var months = {jan:0,feb:1,mar:2,apr:3,may:4,jun:5,
                jul:6,aug:7,sep:8,oct:9,nov:10,dec:12};
  var b = s.split(/-/g);
  return new Date(b[2], months[b[1].substr(0,3).toLowerCase()], b[0]);
}

Kumar Manish · Answer 2 · 2014-05-09T07:39:26.573

0

Try this code :

var d1= new Date(); // get the current date

var enddate = inputText.value; // text box value

var d2 = enddate.split('/');

d2 = new Date(d2.pop(), d2.pop() - 1, d2.pop());


if (d2 >= d1)
 {
    // do something
 }

edited May 09 '14 at 07:39

answered May 09 '14 at 06:56

Kumar Manish

3,746
3
37
42

Assuming that *d1* is actually *startdate*, note that *startdate* will use the current time whereas *d2* will not and be set to 00:00:00. So even if *d2* and *startdate* are the same date, `d2 >= d1` will almost certainly always be false unless *startdate* is created at exactly midnight (to the millisecond 00:00:00.000) at the start of the date. – RobG May 09 '14 at 07:17

joker · Answer 3 · 2014-05-09T07:27:33.040

0

Try This

var date1=inputText.value;
var date2=document.getElementById('<%=HdnDate.ClientID%>').value;
var record1 = new Date(date1);
var record2 = new Date(date2);
if(record1 <= record2)
{
      alert("Please ensure that the Date is greater than or equal to the Current Date.");

}

edited May 09 '14 at 07:27

answered May 09 '14 at 06:57

joker

982
9
23

But how it will check for month and year?@joker – sona May 09 '14 at 07:08
it will check for whole date not just for day, i just use variable name record_day1 – joker May 09 '14 at 07:09
Thanks for the reply.let me try.@joker – sona May 09 '14 at 07:10
For alert message record1 and record2 it is showing invalid date.@joker – sona May 09 '14 at 07:20
It does not make any sense at all to get the parts of a date, then construct a non–standard string that is then parsed by *Date.parse*. Just use the parts directly in the Date constructor. E.g. assuming a standard d/m/y string: `record1 = new Date(record_day1[2], --record_day1[1], record_day1[0])`. – RobG May 09 '14 at 07:22
change my answer try this, may be it helps you. . .@sona – joker May 09 '14 at 07:28

score 0 · Accepted Answer · answered May 09 '14 at 07:31

0

Try This:

<script type="text/javascript">
    var dateObj = new Date();
    var month = dateObj.getUTCMonth();
    var day = dateObj.getUTCDate();
    var year = dateObj.getUTCFullYear();
    var dateSplitArray = "";
    var enddate = '05/05/2014'; // set your date here from txtbox
    var IsValidDate = false;
    splitString(enddate, "/");
    if (year >= dateSplitArray[2]) {
        if (month >= dateSplitArray[1]) {
            if (day >= dateSplitArray[0]) {
                IsValidDate = true;
            }
        }
    }
    if (IsValidDate == false) {
        alert("Please ensure that the Date is greater than or equal to the Current Date.");
    }
    else {
        alert("Please proceed, no issue with date");
    }
    function splitString(stringToSplit, separator) {
        dateSplitArray = stringToSplit.split(separator);
    }
</script>

answered May 09 '14 at 07:31

NayeemKhan

1,210
7
19
38

my date format is ex:4-may-2014. how to check for mothng?in the above code@nayeemkhan – sona May 09 '14 at 09:16
But only one thing we can add when month is eqau and when month is greater condition. if (dateSplitArray[2] >= year) { if (monthNumber = month) { if (dateSplitArray[0] >= day) { IsValidDate = true; } } else if (monthNumber >month) { IsValidDate = true; }@nayeemkhan – sona May 09 '14 at 10:59
Why use UTC values? If a user at say UTC-0500 runs the above at 21:00 on 30 June, the above will return UTC values for 1 July. Also, month numbers in ECMAScript are zero based, this answer doesn't allow for that (e.g. `date.getMonth()` returns 5 for June). – RobG May 09 '14 at 14:34
@sona in case of 4-may-2014, u may need to maintain an array of month name to compare months, thanks. – NayeemKhan May 12 '14 at 06:33
@RobG It was my choice to go for UTC as date retrieval is simple. you can convert or use any other format too, no restriction :). For month please add 1. – NayeemKhan May 12 '14 at 06:38

How to check condition for date greater than or smaller than in javascript?

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