Need Help! Javascript Calculator with swappable Input Field.

**bigfatdesigns** · 01-09-2013 04:10 PM

Hi Everyone!

First off - thanks in advance - and yes. I am a javascript noob. (of sorts)

I am working on a "calculator" where you click on Form Input buttons and the numbers automatically Add together in the "Total" Input. However - I need to have Three (or more) Total Windows. And I would like to swap which "Total Window" you are using via a radio button.

I have it working with one "Total Window" - but I am unsure how to swap the Field that is being used in my calculations.

Probably something simple - but I am new to javascript and the syntax...

I started a jsfiddle: http://jsfiddle.net/bigfatdesigns/eSAPk/

Thanks!

- Nick

**JMRKER** · 01-09-2013 11:08 PM

Major re-write here... Too many corrections to try to fix as was.

Changes assume I understand what you are trying to accomplish, which is not a known fact.

Code:

<!DOCTYPE html>
<html lang="en">
<meta charset="utf-8" />
<title> Untitled </title>
<script type="text/javascript">
// From: http://www.webdeveloper.com/forum/showthread.php?271221-Need-Help!-Javascript-Calculator-with-swappable-Input-Field.&daysprune=30

function clearAll() {
  document.Calc.InputWIN.value = '0';
  document.Calc.InputPLACE.value = '0';
  document.Calc.InputSHOW.value = '0';
}

function WinPlaceShow(info) { 
  var rbtn = getRBtnName('BetSelector');
  switch (rbtn) {
    case 'InputWIN': var a = document.Calc.InputWIN.value*1;  var b = info*1;  document.Calc.InputWIN.value = a+b; break;
    case 'InputPLACE': var a = document.Calc.InputPLACE.value*1;  var b = info*1;  document.Calc.InputPLACE.value = a+b; break;
    case 'InputSHOW': var a = document.Calc.InputSHOW.value*1;  var b = info*1;  document.Calc.InputSHOW.value = a+b; break;
  }
}

function getRBtnName(GrpName) {
  var sel = document.getElementsByName(GrpName);
  var fnd = -1;
  var str = '';
  for (var i=0; i<sel.length; i++) {
    if (sel[i].checked == true) { str = sel[i].value;  fnd = i; }
  }
//  return fnd;   // return option index of selection
// comment out next line if option index used in line above  
  return str;
} 
</script>

<style type="text/css">
.ChipB {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: 0px 0px;
  height:54px;
  width:54px;
  color: transparent;
}
.ChipB:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: 0px -54px;
  height:54px;
  width:54px;
}
.ChipC {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -58px 0px;
  height:54px;
  width:54px;
  color: transparent;
}
.ChipC:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -58px -54px;
  height:54px;
  width:54px;
}
.ChipD {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -115px 0px;
  height:54px;
  width:54px;
  color: transparent;
}
.ChipD:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -115px -54px;
  height:54px;
  width:54px;
}
.ChipE {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -173px 0px;
  height:54px;
  width:54px;
  color: transparent;
}
.ChipE:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -173px -54px;
  height:54px;
  width:54px;
}
.ChipF {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -230px 0px;
  height:54px;
  width:54px;
  color: transparent;
}
.ChipF:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -230px -54px;
  height:54px;
  width:54px;
}
.ChipG {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -288px 0px;
  height:54px;
  width:54px;
  color: transparent;
}
.ChipG:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -288px -54px;
  height:54px;
  width:54px;
}
.ChipH {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -346px 0px;
  height:54px;
  width:54px;
  color: transparent;
}
.ChipH:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -346px -54px;
  height:54px;
  width:54px;
}
</style>
</head>
<body>
<FORM NAME="Calc" action="" method="post" onsubmit="return false">
  <TABLE BORDER=4>
    <TR>
      <TH><button onclick="clearAll()">Clear</button></TH>
      <TH>
        <input type="radio" name="BetSelector" value="InputWIN" checked="checked" /> WIN
        <br /> <INPUT TYPE="text" NAME="InputWIN" Size="16" value="0" />
      </TH>
      <TH>
        <input type="radio" name="BetSelector" value="InputPLACE" /> PLACE
        <br /> <INPUT TYPE="text" NAME="InputPLACE" Size="16" value="0" />
      </TH>
      <TH>
        <input type="radio" name="BetSelector" value="InputSHOW" /> SHOW
        <br /> <INPUT TYPE="text" NAME="InputSHOW" Size="16" value="0" />
      </TH>
    </TR>
    <tr>
      <th colspan="4">
        <INPUT TYPE="button" NAME="b" VALUE="1" onclick="WinPlaceShow(this.value)" class="ChipB">
        <INPUT TYPE="button" NAME="c" VALUE="5" onclick="WinPlaceShow(this.value)" class="ChipC">
        <INPUT TYPE="button" NAME="d" VALUE="25" onclick="WinPlaceShow(this.value)" class="ChipD">
        <INPUT TYPE="button" NAME="e" VALUE="100" onclick="WinPlaceShow(this.value)" class="ChipE">
        <INPUT TYPE="button" NAME="f" VALUE="500" onclick="WinPlaceShow(this.value)" class="ChipF">
        <INPUT TYPE="button" NAME="g" VALUE="1000" onclick="WinPlaceShow(this.value)" class="ChipG">
        <INPUT TYPE="button" NAME="h" VALUE="5000" onclick="WinPlaceShow(this.value)" class="ChipH">
      </th>
    </tr>
  </TABLE>
</FORM>
</body>
</html>

**bigfatdesigns** · 01-10-2013 09:33 AM

Wow - Yes! That works Perfectly! Thanks! I would not have been able to code that.

Is it possible to update two things? I was thinking that perhaps the "input" field should be hidden fields and the display text should be a <span>... ?

**bigfatdesigns** · 01-10-2013 09:50 AM

Ooo - I think I figured this on my own.

To function ClearAll() I added:
document.getElementById('SpanSHOW').innerHTML = '0';

And Additionally added to WinPlaceShjow():
document.getElementById('SpanWIN').innerHTML = a+b;

And I did that for each field - and it works great! Thanks again!

**JMRKER** · 01-10-2013 10:56 AM

Not sure why you would want to create hidden fields???

Simplifed logic a bit.

Would recommend putting CSS style stuff into an external file and <link...> to it.

Code:

<!DOCTYPE html>
<html lang="en">
<meta charset="utf-8" />
<title> Untitled </title>
<script type="text/javascript">
// From: http://www.webdeveloper.com/forum/showthread.php?271221-Need-Help!-Javascript-Calculator-with-swappable-Input-Field.&daysprune=30

var BetWIN = 0;
var BetPLACE = 0;
var BetSHOW = 0;

function clearAll() {
  BetWIN = 0;  BetPLACE = 0;  BetSHOW = 0;
  document.getElementById('amtWIN').innerHTML = BetWIN;
  document.getElementById('amtPLACE').innerHTML = BetPLACE;
  document.getElementById('amtSHOW').innerHTML = BetSHOW;
}

function WinPlaceShow(info) { 
  var rbtn = getRBtnName('BetSelector');
  switch (rbtn) {
    case 'InputWIN'  : BetWIN += info*1;    document.getElementById('amtWIN').innerHTML = BetWIN; break;
    case 'InputPLACE': BetPLACE += info*1;  document.getElementById('amtPLACE').innerHTML = BetPLACE; break;
    case 'InputSHOW' : BetSHOW += info*1;   document.getElementById('amtSHOW').innerHTML = BetSHOW; break;
  }
}

function getRBtnName(GrpName) {
  var sel = document.getElementsByName(GrpName);
  var fnd = -1;
  var str = '';
  for (var i=0; i<sel.length; i++) {
    if (sel[i].checked == true) { str = sel[i].value;  fnd = i; }
  }
//  return fnd;   // return option index of selection
// comment out next line if option index used in line above  
  return str;
} 
</script>

<style type="text/css">
.betAmount { color:blue; font-size:2em; }

.ChipB {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: 0px 0px;
  height:54px;  width:54px;  color: transparent;
}
.ChipB:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: 0px -54px;
  height:54px;  width:54px;
}
.ChipC {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -58px 0px;
  height:54px;  width:54px;  color: transparent;
}
.ChipC:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -58px -54px;
  height:54px;  width:54px;
}
.ChipD {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -115px 0px;
  height:54px;  width:54px;  color: transparent;
}
.ChipD:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -115px -54px;
  height:54px;  width:54px;
}
.ChipE {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -173px 0px;
  height:54px;  width:54px;  color: transparent;
}
.ChipE:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -173px -54px;
  height:54px;  width:54px;
}
.ChipF {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -230px 0px;
  height:54px;  width:54px;  color: transparent;
}
.ChipF:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -230px -54px;
  height:54px;  width:54px;
}
.ChipG {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -288px 0px;
  height:54px;  width:54px;  color: transparent;
}
.ChipG:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -288px -54px;
  height:54px;  width:54px;
}
.ChipH {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -346px 0px;
  height:54px;  width:54px;  color: transparent;
}
.ChipH:hover {
  background-image: url(http://flightderby.bigfatdev.com//media/layout/Poker-chip-buttons.png);
  background-repeat: no-repeat;
  background-position: -346px -54px;
  height:54px;  width:54px;
}
</style>
</head>
<body>
<FORM NAME="Calc" action="" method="post" onsubmit="return false">
<TABLE BORDER="4">
 <TR>
  <TH><button onclick="clearAll()">Clear</button></TH>
  <TH><label>
   <input type="radio" name="BetSelector" value="InputWIN" checked="checked" />
   WIN </label><br /> <span class="betAmount" id="amtWIN">0</span>
  </TH>
  <TH><label>
   <input type="radio" name="BetSelector" value="InputPLACE" />
   PLACE </label><br /> <span class="betAmount" id="amtPLACE">0</span>
  </TH>
  <TH><label>
   <input type="radio" name="BetSelector" value="InputSHOW" />
   SHOW </label><br /> <span class="betAmount" id="amtSHOW">0</span>
  </TH>
 </TR>
 <tr>
  <th colspan="4">
   <INPUT TYPE="button" NAME="b" VALUE="1" onclick="WinPlaceShow(this.value)" class="ChipB">
   <INPUT TYPE="button" NAME="c" VALUE="5" onclick="WinPlaceShow(this.value)" class="ChipC">
   <INPUT TYPE="button" NAME="d" VALUE="25" onclick="WinPlaceShow(this.value)" class="ChipD">
   <INPUT TYPE="button" NAME="e" VALUE="100" onclick="WinPlaceShow(this.value)" class="ChipE">
   <INPUT TYPE="button" NAME="f" VALUE="500" onclick="WinPlaceShow(this.value)" class="ChipF">
   <INPUT TYPE="button" NAME="g" VALUE="1000" onclick="WinPlaceShow(this.value)" class="ChipG">
   <INPUT TYPE="button" NAME="h" VALUE="5000" onclick="WinPlaceShow(this.value)" class="ChipH">
  </th>
 </tr>
</TABLE>
</FORM>
</body>
</html>

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