Javascript help

[Chad5E25]

I have 2 date fields in my form. I am trying to create a third "deadline" field that calculates and displays the deadline which is 90 days from the earlier of the 2 dates. How would I do this using javascript?

[ls_rbls]

Basically you can use the script below as a custom calculation script for the "deadline" field:

var s = this.getField("myDateField").valueAsString;  

    var d = util.scand("mmmm d, yyyy", s);  
    d.setDate(d.getDate()+90);  
    event.value = util.printd("mmmm d, yyyy", d);  

I am not sure if you you want to run a validation script or similar to determine which of the two datefields has the earliest date. And based on that , then execute the script above. Otherwise the script above should work fine using just one of the date fields as the start date. 

[try67]

That's only part of what they asked for... The first part is to compare the two dates and determine which is the earlier one, and then use that as the basis for the deadline calculation.

[Thom Parker]

Here's the calculation for the deadline field

var oDate1 = util.scand("mmmm d, yyyy", this.getField("Date1")); 
var oDate2 = util.scand("mmmm d, yyyy", this.getField("Date2"));
var oStart = (oDate1<oDate2)?oDate1:oDate2;
oStart.setDate(oStart.getDate()+60);
event.value = util.printd("mmm d, yyyy",oStart);
   

[kiki1986]

Hi, Thom, I was trying to use this code but whatever I put in first 2 fields it shows only result counting from todays date.

[try67]

Change the first two lines to:

var oDate1 = util.scand("mmmm d, yyyy", this.getField("Date1").valueAsString);
var oDate2 = util.scand("mmmm d, yyyy", this.getField("Date2").valueAsString);

However, this will still mean that if a field is empty it will be treated like it's today's date. If you don't want that you should let us know what you do want to happen if either (or both) of those fields are empty.

[kiki1986]

I thought it works like normal calculation, every time I change date in first 2 fields it will auto update result.

[try67]

It will do that, yes.

[Thom Parker]

Good Catch, thanks!!