Javascript - Sum mulitple form option values 2

[mikesoper]

Hi there,
I need a way to sum all selected <option> values from within a form. My form could have up to 100 <selects> all with a name of "Frequencynnnn" nnnn being an ID number.

I have tried to modify this script I found:

function getFields() { var inputs = document.getElementsByTagName('option'), result = 0; for( var i = 0; i < inputs.length; i++ ) { var num = parseFloat( inputs.value ); //if it's a valid number add it if( !isNaN( num ) ) result += num; } alert( result ); }

However all this will do is sum all values from all options/drop downs - what I need is just the selected values added together.

Can anyone help?

Thanks

 

[feherke]

Hi

Do any of your [tt]select[/tt] have [tt]multiple[/tt] attribute set ? If not, would be enough to change "input" to "select".


Feherke.

 

[vacunita]

Don't you mean "option" to select rather than input?

In other words, as long as your dropdowns can't have more than one option selected from each of them then all you need is to get each select, and access their values.



----------------------------------
Phil AKA Vacunita
----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

Web & Tech

 

[mikesoper]

Hi,

Each select can only have 1 option selected.

Thanks

 

[vacunita]

In that case:

function getFields() { 
    var inputs = document.getElementsByTagName('[red]select[/red]');      result = 0;  
   for( var i = 0; i < inputs.length; i++ ) { 
                    var num = parseFloat( inputs[i].value );   
          //if it's a valid number add it   
          if( !isNaN( num ) ) result += num; 
             }  
     alert( result ); 
}

----------------------------------
Phil AKA Vacunita
----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

Web & Tech

 

[mikesoper]

Thanks both of you.

I cant beleive I didnt try that - so simple!!

Sometimes the easiest answers are the hardest to find (in my case anyway!)