RE: Validating struts elements of array type in javascript

[Miller, Andy]

For JavaScript, here is the easiest way to do this is for your case:

Use a hidden variable to store the number of packages.  

For each package, I am guessing you have 3 fields: height, weight, and
length.  The names for these fields should be something to the effect
of: height_1, weight_1, length_1 (for package 1), height_2, weight_2,
length_2 (for package 2), etc.

Then you would simply iterate through the total number of packages and
test each field to make sure it is a number.  Something like this:

var total=document.form_name.total_packages.value;
for(var i=1; i=<total; i++)
{
  var thisHeight = eval('document.form_name.height_' + i + '.value');
  var thisWeight = eval('document.form_name.weight_' + i + '.value');
  var thisLength = eval('document.form_name.length_' + i + '.value');

  if(!thisHeight.match(/^\d+$/))
  {
    // height contains non-numeric characters. Take some action
  }
  if(!thisWeight.match(/^\d+$/))
  {
    // weight contains non-numeric characters. Take some action
  }
  if(!thisLength.match(/^\d+$/))
  {
    // length contains non-numeric characters. Take some action
  }
}

Of course, this is just an example and you would need to make the code
work for your specifics.

Andy Miller
IS Designer
Butte College
530.895.2946

-----Original Message-----
From: Rizwan Merchant [mailto:[EMAIL PROTECTED] 
Sent: Sunday, May 28, 2006 3:52 PM
To: Struts Users Mailing List
Subject: Validating struts elements of array type in javascript 


Hi,
I have a Order form that contains an Order object. One of the properties

of the order object is an array called "packages". Each package has a 
height, weight and length.
In the jsp, we create as many rows as there are packages in the order 
and the customer can define the dimensions of each package.

I would like to validate the values entered for each of the 
packages..how would i do this in javascript? Basically, is there a way 
to get a handle on each of the packages in javascript and loop through 
them to check their types?

We are using the commons validator for the rest of the validation. not 
sure if i can use that for this purpose.

Thanks,
-Riz.


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