Is it possible to calculate two or more number entered in the same field ?

Question

What 'm trying to do is to caculate a book pages number for a copying them.
For example I want to copy pages from 25 to 30 , so the user will write 25-30
the number of copies will equal sum = "30 - 25 + 1"
and if the user write only a single number, the number of copies will equal "sum = sum + 1"
So, the user input will be like that "25-30,45-60,65,67"
I'm thinking of using an Array and a "," to split
var sumArray = new Array();sumArray = sum.split(",");
Are there any possible way to do this ??
Thanx

Answer 1

Hi, I think you could use a RegEx but I would use a split as well, something like;
var pageNumbers = TextField1.rawValue.split(",");
var sum = 0;
var isValid = true;
for (var i = 0; i < pageNumbers.length; i++)
var pages = pageNumbers[i].split("-");
// Check for all number elements
if (!pages.every(function(element) { return (element == parseInt(element, 10)); } ) )
  xfa.host.messageBox("Please enter comma separated list of pages number, with a range separated by a hyphen, e.g. 25-30,45-60,65,67");
  isValid = false;
  break;
if (pages.length > 2)
  xfa.host.messageBox("Please enter a page range separated by a hyphen, e.g. \"45-60\"");
  isValid = false;
  break; 
if (pages.length == 1)
  sum++;
else
  var start = parseInt(pages[0]);
  var end = parseInt(pages[1]);
  if (end < start)
   xfa.host.messageBox("Please enter a valid page range separated by a hyphen, with the start page first, e.g. \"45-60\"");
   isValid = false;
   break; 
  sum += (end - start + 1);
if (isValid)
app.alert(sum);
Might need some more error handling but hopefully will get you started.
Regards
Bruce