Addition with JavaScript and Forms

[The Hobo]

I have a large number of forms on my webpage. How could I go about adding them up add displayin the result in another text box, as it's being typed?

[The Hobo]

This is the closest I've gotten, but it just concenates (or whatever that word is) them together, so 1, 2, and 3, it would display 123:

lengthy code removed...

And what event should I call this with on the input area?

[filburt1]

In Java there's .intValue(), casting to an int, and int(some value), do those work?

[The Hobo]

No...unless I'm doing it wrong.

[Bonker Gudd]

You need to re-evaluate your parp directive

[The Hobo]

Originally posted by Bonker Gudd
You need to re-evaluate your parp directive

Who?

[The Hobo]

Alright, I got it working, but is there anyway I could simplify this code, maybe using some kind of loop?

function count() {
  var a = parseInt(document.forms(0).box1.value) || 0;
  var b = parseInt(document.forms(0).box2.value) || 0;
  var c = parseInt(document.forms(0).box3.value) || 0;
  var d = parseInt(document.forms(0).box4.value) || 0;
  var e = parseInt(document.forms(0).box5.value) || 0;
  var f = parseInt(document.forms(0).box6.value) || 0;
  var g = parseInt(document.forms(0).box7.value) || 0;
  var h = parseInt(document.forms(0).box8.value) || 0;
  var i = parseInt(document.forms(0).box9.value) || 0;
  var j = parseInt(document.forms(0).box10.value) || 0;
  var k = parseInt(document.forms(0).box11.value) || 0;
  var l = parseInt(document.forms(0).box12.value) || 0;
  var m = parseInt(document.forms(0).box13.value) || 0;

  document.forms(0).total1.value = a + b + c + d + e + 
  f + g + h + i + j + k + l + m;

  var a = parseInt(document.forms(0).box14.value) || 0;
  var b = parseInt(document.forms(0).box15.value) || 0;
  var c = parseInt(document.forms(0).box16.value) || 0;
  var d = parseInt(document.forms(0).box17.value) || 0;
  var e = parseInt(document.forms(0).box18.value) || 0;
  var f = parseInt(document.forms(0).box19.value) || 0;
  var g = parseInt(document.forms(0).box20.value) || 0;
  var h = parseInt(document.forms(0).box21.value) || 0;
  var i = parseInt(document.forms(0).box22.value) || 0;
  var j = parseInt(document.forms(0).box23.value) || 0;
  var k = parseInt(document.forms(0).box24.value) || 0;
  var l = parseInt(document.forms(0).box25.value) || 0;
  var m = parseInt(document.forms(0).box26.value) || 0;

  document.forms(0).total2.value = a + b + c + d + e + 
  f + g + h + i + j + k + l + m;
}

box1 through box13 are added in total1 and box14 through box26 are added in total2.

[punkpie_uk]

Hi,

Do you mean something like this...

function count(){
  tot1=0;
  for (i=1;i<14;i++){
	  if (document.forms(0).item('box'+i).value==""){
	    tot1=tot1+0;
		}else{
			tot1=tot1+parseInt(document.forms(0).item('box'+i).value);	
		}
	}
	document.forms(0).total1.value=tot1;
	tot2=0;
  for (i=14;i<27;i++){
	  if (document.forms(0).item('box'+i).value==""){
	    tot2=tot2+0;
		}else{
			tot2=tot2+parseInt(document.forms(0).item('box'+i).value);	
		}
	}
	document.forms(0).total2.value=tot2;
}

Its a looped version of your code.

[The Hobo]

That's great. Thanks alot