add two years to date string

[daJunkCollector]

Hey,

I have a string variable, $s_dateboxEffectiveStartDate

I need to add - two years minus one day - to this variable. Could anyone offer any advise?

function UpdateShipAndDeliverDates(ElementName) {
        if(ElementName=='s_dateboxEffectiveStartDate') {
            document.MyForm.s_dateboxEffectiveEndDate.value=(document.MyForm.s_dateboxEffectiveStartDate.value) + (TWO YEARS MINUS ONE DAY);
        } else if(ElementName=='s_dateboxEffectiveEndDate') {
            document.MyForm.s_dateboxEffectiveStartDate.value=(document.MyForm.s_dateboxEffectiveEndDate.value) - (TWO YEARS MINUS ONE DAY);
        }
    }

[r035198x]

Looks like you want to do that using Javascript?
Have a look at the Date functions reference and try it.

[daJunkCollector]

Hrm...looks good. Thanks man.

[daJunkCollector]

Hey,

I have a string variable, $s_dateboxEffectiveStartDate

I need to add - two years minus one day - to this variable. Could anyone offer any advise?

<script type="text/javascript">
    function UpdateShipAndDeliverDates(ElementName) {
        if(ElementName=='s_dateboxEffectiveStartDate') {
            document.MyForm.s_dateboxEffectiveEndDate.value=(document.MyForm.s_dateboxEffectiveStartDate.value);
        } else if(ElementName=='s_dateboxEffectiveEndDate') {
            document.MyForm.s_dateboxEffectiveStartDate.value=(document.MyForm.s_dateboxEffectiveEndDate.value);
        }
    }
</script>
 
 
 

[r035198x]

Have you tried to use any of the functions suggested here yet?

[acoder]

The Date object is pretty dynamic and very easy to add years/months/days to it. Create a Date object and use the set*** functions to add by adding to the get*** versions.

ps. I've moved and merged these threads.