[RESOLVED] Calaculation Function

[obrienkev]

Hi all,

I have two textfields - fieldA and fieldB.

Once fieldB has lost focus (onBlur()) I want the following calculation to be made...

((fieldA-field😎/field😎 *100

the result should then be formatted to two decimal places

and I want to return this result to another field - fieldC.

Any ideas on how this is done? Thanks.

My code so far...

function calculate() 
{ 
var fieldA = document.getElementById("fieldA"); 
var fieldB = document.getElementById("fieldB"); 
var calc = ((fieldA-fieldB)/fieldB) * 100; 
return calc; 
}

textfield:

<input type="text" name="field2" id="field2" onblur="change()" />

Field to contain returned value...
<textarea name="fieldC" id="fieldC"><script>var calc;</script></textarea>

[obrienkev]

This does the job for me...

         function calculate()
         {
                      var fieldA = document.getElementById("price").value;
                     var fieldB = document.getElementById("alternative_price").value;

                 var calc = ((fieldA-fieldB)/fieldB) * 100;

                 document.getElementById("check_alternative").value=calc;
     }

Field to receive Value:
<input type="text" name="check_alternative" id="check_alternative" />

other fields call function using onblur()