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Thread: Need Help! Javascript Calculator with swappable Input Field.

  1. #1
    Join Date
    Jan 2013
    Location
    Wausau, WI
    Posts
    3

    Need Help! Javascript Calculator with swappable Input Field.

    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

  2. #2
    Join Date
    Dec 2005
    Location
    TX
    Posts
    7,946

    Lightbulb

    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>

  3. #3
    Join Date
    Jan 2013
    Location
    Wausau, WI
    Posts
    3
    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>... ?

  4. #4
    Join Date
    Jan 2013
    Location
    Wausau, WI
    Posts
    3
    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!

  5. #5
    Join Date
    Dec 2005
    Location
    TX
    Posts
    7,946

    Lightbulb

    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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