Populating hidden value on submit with listbox items

[qwerty234]

Hi,

On submitting the form, I'm trying to place the items of a listbox in a hidden input. It doesn't work. Is my approach correct?

I have a form like this:

<form name="myForm" onsubmit="return listBoxContents(this.Form.sel1)" action="project_selection.php" method="post">

and a function as below:

function listBoxContents(sel1)
{
var selLength1 = sel1.options.length,i,values1='';

for(i=0; i<selLength1; i++)
values1+=sel1.options.value+ ",";

document.myForm.hiddenName.value = values1;

return true;
}

and the hidden value is as follows:

<input type=hidden name="hiddenName" value="initial">

 

[cLFlaVA]

try something more like:

<form name="myForm" onsubmit="return listBoxContents([red]this.sel1[/red])" action="project_selection.php" method="post">

function listBoxContents(sel1)
{
  var selLength1 = sel1.options.length;
  var values1='';

  for(var i=0; i<selLength1; i++)
    values1+=sel1.options[i].value+ ",";

  sel1.form.hiddenName.value = values1;

  return true;
}

*cLFlaVA
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