How to calculate diffrence between two date fields

[zuks89]

Hi , all

I got 2 fields in my jsp page what i am fill with default values Today and Today - 7

Code below

  var date = new Date();     
    var twoDigitDay=((date.getDate())>=10)? (date.getDate()) : '0' + (date.getDate());
    var twoDigitMonth = ((date.getMonth() + 1) >= 10) ? (date.getMonth() + 1) : '0' + (date.getMonth() + 1);
    var f_date = twoDigitDay + "." + twoDigitMonth + "." + date.getFullYear();
    var datums2 = new Date();
    var datums3 = new Date(datums2.getTime() - 7 * 24 * 60 * 60 * 1000);
    var twoDigitDay2=((datums3.getDate())>=10)? (datums3.getDate()) : '0' + (datums3.getDate());
    var twoDigitMonth2 = ((datums3.getMonth() + 1) >= 10) ? (datums3.getMonth() + 1) : '0' + (datums3.getMonth() + 1);
    var f_dateminus7 = twoDigitDay2 + "." + twoDigitMonth2 + "." + datums3.getFullYear();

    document.getElementById('StartDate_fltrTagFrom').value = f_dateminus7;
    document.getElementById('StartDate_fltrTagTo').value = f_date;

But user can change theese two date fields i need to make function who calculate diffrennce betwwen these two date fields
Priview if diffrence is bigger that 365 days i got alert and do other stuff , I maked that filter but somthing is goes wrong and a value is not corect where is a problem ?

    var date = new Date();     
    var twoDigitDay=((date.getDate())>=10)? (date.getDate()) : '0' + (date.getDate());
    var twoDigitMonth = ((date.getMonth() + 1) >= 10) ? (date.getMonth() + 1) : '0' + (date.getMonth() + 1);
    var f_date = twoDigitDay + "." + twoDigitMonth + "." + date.getFullYear();
    var datums2 = new Date();
    var datums3 = new Date(datums2.getTime() - 7 * 24 * 60 * 60 * 1000);
    var twoDigitDay2=((datums3.getDate())>=10)? (datums3.getDate()) : '0' + (datums3.getDate());
    var twoDigitMonth2 = ((datums3.getMonth() + 1) >= 10) ? (datums3.getMonth() + 1) : '0' + (datums3.getMonth() + 1);
    var f_dateminus7 = twoDigitDay2 + "." + twoDigitMonth2 + "." + datums3.getFullYear();

    document.getElementById('StartDate_fltrTagFrom').value = f_dateminus7;
    document.getElementById('StartDate_fltrTagTo').value = f_date;

Thanks !

[zuks89]

Upps the filter code is this

    var cbvalue =document.getElementById('StartDate_fltrTagOp'); 
    var d1=document.getElementById('StartDate_fltrTagFrom').value;
    var d2=document.getElementById('StartDate_fltrTagTo').value;
    var sf_date = Date.parse(d1.replace(".","/").replace(".","/"));
    var sf_date2 = Date.parse(d2.replace(".","/").replace(".","/"));
    var difference = Math.abs(sf_date2 - sf_date)/60/60/24/1000;
      alert(difference);
     if (difference>365 && cbvalue.checked){
        alert("Aprūpes epizodes sākuma meklēšanas kritērijs pārsniedz 365 dienas");

[007Julien]

All the days are not 24 hours with daylight saving time !

// Then prefer 
var datum3 = datim2.setDate(datims2.getDate() - 7); 
// to 
var datums3 = new Date(datums2.getTime() - 7 * 24 * 60 * 60 * 1000);

to avoid rare but possible errors...

To test the difference, it's to possible to compare the valueOf() or getTime() of one date and this date plus one year with getFullYear() and a setYear() function !