How to view values of a select list in a textbox more than once

Question

I'm trying to put "mobiscroll" (a select list) values into a textbox, but three times in one page, the strange thing is that if I choose to view it only one time it's working... Also, how do I make it display the first number even if hasn't been selected by the user? I tried with "selected" after "value" but it isn't working..

http://winegood.it/landing_ristoranti/index.html

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Another question, what should I do if I want to multiply only one the result by 2? I'm trying to do it with this example but it isn't working..

Answer 1

var f = document.frm;
f.sel_value.value = sel.options[sel.selectedIndex].value;

doesn't work for two reasons:

1. The <input name="sel_value"> elements are not within the form. You have an opening <form> tag, but no close tag, but the form is implicitly closed by the </div> that closes the <div> that contains it.

2. The assignment will only fill in one input, it doesn't automatically loop over all of them like jQuery does.

Try:

$("input[name=sel_value]").val($(sel).val());

To make it fill in these fields when the page loads, you need:

 $(function(){
    $('#select').scroller({
        preset: 'select',
        theme: 'default',
        display: 'inline',
        mode: 'clickpick',
        inputClass: 'i-txt'
    });
    aggiornaHidden($("#select"));
});

To multiply the value before filling in some of the inputs, change those inputs to:

<input type="text" name="sel_value" data-multiply="2" .../>

Change aggiornaHidden to:

function aggiornaHidden(sel){
  $("input[name=sel_value]").each(function() {
      var multiply = $(this).data("multiply") || 1;
      $(this).val($(sel).val() * multiply);
  });
}