using javascript function in php while loop

Question

I am trying to multiply values in two text boxes and place it on a third text box... Using javascript and php while loop with onclick event.....How to do that?? my code is

Answer 1

Try like this

while($c=mysql_fetch_array($b)) {
echo "
            //Let you want to pass id from DB
      ";

or you can use

onkeypress='multiply('.$c['id'].')'

USE onkeypress instead of onclick() and in your script

function multiply(id)
{

   var textValue1 = document.getElementById('CLS'+id).value;
   var textValue2 = document.getElementById('rate'+id).value;

   document.getElementById('valuation'+id).value = textValue1 * textValue2;

}

And try to avoid mysql_* functions because they are depricated,instead use either mysqli_* functions or PDO statements