Question

i have been tinkering with the date object.

I want to add a dynamic amount of days to a day and then get the resulting date as a variable and post it to a form.

var startDate = $('#StartDate').datepicker("getDate");
    var change = $('#numnights').val();
    alert(change);
    var endDate = new Date(startDate.getFullYear(), startDate.getMonth(),startDate.getDate() + change);

does everything correctly except the last part. it doesnt add the days onto the day

take this scenario:
startdate = 2011-03-01   
change = 1  
alert change = 1
endDate = 2011-03-11 *it should be 2011-03-02*

thank you to all the quick replies.

converting change variable to an integer did the trick. thank you.

parseInt(change)

just to extend on this: is there a way to assign a variable a type, such as var charge(int)?

Answer 1

You may have fallen victim to string concatenation.

Try changing your last parameter in the Date constructor to: startDate.getDate() + parseInt(change)

See this example for future reference.