Js Calculator

Hello all,

Here is yet another cool Javascript I found. Its very useful to, its a javascript calculator. I use this thing about everyday because it has nearly the same features as your regular everyday calculator. Here is a demo to try it out if you want. If you just want the code here it is.

<FORM name="Keypad" action=""><TABLE><B><TABLE border=2 width=50 height=60 cellpadding=1 cellspacing=5><TR><TD colspan=3 align=middle><input name="ReadOut" type="Text" size=24 value="0" width=100%></TD><TD></TD><TD><input name="btnClear" type="Button" value="  C  " onclick="Clear()"></TD><TD><input name="btnClearEntry" type="Button" value="  CE " onclick="ClearEntry()"></TD></TR><TR><TD><input name="btnSeven" type="Button" value="  7  " onclick="NumPressed(7)"></TD><TD><input name="btnEight" type="Button" value="  8  " onclick="NumPressed(8)"></TD><TD><input name="btnNine" type="Button" value="  9  " onclick="NumPressed(9)"></TD><TD></TD><TD><input name="btnNeg" type="Button" value=" +/- " onclick="Neg()"></TD><TD><input name="btnPercent" type="Button" value="  % " onclick="Percent()"></TD></TR><TR><TD><input name="btnFour" type="Button" value="  4  " onclick="NumPressed(4)"></TD><TD><input name="btnFive" type="Button" value="  5  " onclick="NumPressed(5)"></TD><TD><input name="btnSix" type="Button" value="  6  " onclick="NumPressed(6)"></TD><TD></TD><TD align=middle><input name="btnPlus" type="Button" value="  +  " onclick="Operation('+')"></TD><TD align=middle><input name="btnMinus" type="Button" value="   -   " onclick="Operation('-')"></TD></TR><TR><TD><input name="btnOne" type="Button" value="  1  " onclick="NumPressed(1)"></TD><TD><input name="btnTwo" type="Button" value="  2  " onclick="NumPressed(2)"></TD><TD><input name="btnThree" type="Button" value="  3  " onclick="NumPressed(3)"></TD><TD></TD><TD align=middle><input name="btnMultiply" type="Button" value="  *  " onclick="Operation('*')"></TD><TD align=middle><input name="btnDivide" type="Button" value="   /   " onclick="Operation('/')"></TD></TR><TR><TD><input name="btnZero" type="Button" value="  0  " onclick="NumPressed(0)"></TD><TD><input name="btnDecimal" type="Button" value="   .  " onclick="Decimal()"></TD><TD colspan=3></TD><TD><input name="btnEquals" type="Button" value="  =  " onclick="Operation('=')"></TD></TR></TABLE></TABLE></B></FORM></CENTER><font face="Verdana, Arial, Helvetica" size=2><script LANGUAGE="JavaScript"><!-- Beginvar FKeyPad = document.Keypad;var Accum = 0;var FlagNewNum = false;var PendingOp = "";function NumPressed (Num) {if (FlagNewNum) {FKeyPad.ReadOut.value  = Num;FlagNewNum = false;  }else {if (FKeyPad.ReadOut.value == "0")FKeyPad.ReadOut.value = Num;elseFKeyPad.ReadOut.value += Num;  }}function Operation (Op) {var Readout = FKeyPad.ReadOut.value;if (FlagNewNum && PendingOp != "=");else{FlagNewNum = true;if ( '+' == PendingOp )Accum += parseFloat(Readout);else if ( '-' == PendingOp )Accum -= parseFloat(Readout);else if ( '/' == PendingOp )Accum /= parseFloat(Readout);else if ( '*' == PendingOp )Accum *= parseFloat(Readout);elseAccum = parseFloat(Readout);FKeyPad.ReadOut.value = Accum;PendingOp = Op;  }}function Decimal () {var curReadOut = FKeyPad.ReadOut.value;if (FlagNewNum) {curReadOut = "0.";FlagNewNum = false;  }else{if (curReadOut.indexOf(".") == -1)curReadOut += ".";  }FKeyPad.ReadOut.value = curReadOut;}function ClearEntry () {FKeyPad.ReadOut.value = "0";FlagNewNum = true;}function Clear () {Accum = 0;PendingOp = "";ClearEntry();}function Neg () {FKeyPad.ReadOut.value = parseFloat(FKeyPad.ReadOut.value) * -1;}function Percent () {FKeyPad.ReadOut.value = (parseFloat(FKeyPad.ReadOut.value) / 100) * parseFloat(Accum);}// End --></SCRIPT>

was testing out your calculator. its pretty cool. dont know really what you would do with it on a site unless its a math site or something. buts its interesting to try