Question

I trying to add days / months / year to a given date and map it to an input field

 
        var d = new Date();
        d.setDate(15);
        d.setMonth(06);
        d.setYear(2011);

        document.getElementById("test").innerHTML=d;

        d.setDate(d.getDate()+20);

        document.getElementById("test").innerHTML+="
"+d.getDate()+"/"+d.getMonth()+"/"+d.getYear("YY");

 

this actually prints out

Fri Jul 15 2011 12:45:48 GMT+0530 (India Standard Time)

4/7/111

actually this is wrong.. it should print out 5/7/2011.. i think by default the system takes as “30” days for a month and adds the +20 days.. but actually Jun has 30 days so that result should be 5/7/2011..

any suggestion about what goes wrong in here.. any alternative for this?

Answer 1

At the first, you have better to use getFullYear to get year as 2011. You did get number from getDate() and add 20. This break Date. You should get long value from getTime(), and add milli-seconds.

<div id="test"></div>
<script>
    var d = new Date();
    d.setDate(15);
    d.setMonth(06);
    d.setFullYear(2011);
    document.getElementById("test").innerHTML+=" "+d.getDate()+"/"+d.getMonth()+"/"+d.getFullYear();
    d.setTime(d.getTime()+1000*60*60*24*20);
    document.getElementById("test").innerHTML+=" "+d.getDate()+"/"+d.getMonth()+"/"+d.getFullYear();
</script>