R: [PHP-DB] Javascript

["Riccardi Moreno" <m.riccardi@webtrade.it>]

Try this:

The HTML codes should look like this:
<input type="text" name="field[]" onChange="add();">
<input type="text" name="field[]" onChange="add();">
<input type="text" name="field[]" onChange="add();">
<input type="text" name="field[]" onChange="add();">
<input type="text" name="totalsum">

function add() {
  var total = 0;
  var thisform = document.forms[0];
  for (i=0;i<=thisform.elements["field[]"].length;i++) {
    if (!isNaN(thisform.elements["field[]"].value) total +=
thisform.elements["field[]"].value;
  }
  thisform.totalsum.value=total;
}

-----Messaggio originale-----
Da: Shahmat Dahlan [mailto:shahmatd@sains.com.my]
Inviato: venerdi 11 ottobre 2002 11.35
A: php-db@lists.php.net
Oggetto:  Javascript


My question might have anything to do with PHP but I have the following
scenario:

Say I have four fields
field1 : XXXXXXXXXXXX
field2 : XXXXXXXXXXXX
field3 : XXXXXXXXXXXX
field4 : XXXXXXXXXXXX

And a total sum field, which is a total sum of the value of the
expression, totalsum = field1 + field2 + field3 + field4
Total sum : XXXXXXXXXXX

You would need to use Javascript to extract the value of field1, field2,
field3, field4, initiated by the Javascript onChange event.

The HTML codes should look like this:
<input type="text" name="field1" addChange="add();">
<input type="text" name="field2" addChange="add();">
<input type="text" name="field3" addChange="add();">
<input type="text" name="field4" addChange="add();">
<input type="text" name="totalsum">

So the add function snippet that I have:

function add()
{
    var thisform=document.forms[0];
    var field1=thisform.field1.value;
    var field2=thisform.field2.value;
    var field3=thisform.field3.value;
    var field4=thisform.field4.value;
    var totalqty=field1+field2+field3+field4;
    thisform.totalsum.value=totalqty;
}

But all I got is a NaN which means Not A Number. I understand that you
solve this by using the parseInt Javascript function.
But still all i get is a NaN value.

Would appreciate if someone could help me out on this.

Regards


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