CODIGO CALCULADORA
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CODIGO CALCULADORA
Bueno aqui otro codigo,esta vez de una calculadora para nuestras web,el codigo es algo largo pero bueno aqui esta:
- Código:
<form action name="Keypad">
<b>
<div align="center">
<table border="2" cellpadding="1" cellspacing="5" height="60" width="50">
<tbody>
<tr>
<td align="middle" colspan="3"><input name="ReadOut" size="24" value="0" width="100%" style="text-align: right" /></td>
<td> </td>
<td align="center"><input name="btnClear" onclick="Clear()" type="button" value=" C " /></td>
<td align="center"><input name="btnClearEntry" onclick="ClearEntry()" type="button" value=" CE " /></td>
</tr>
<tr>
<td align="center"><input name="btnSeven" onclick="NumPressed(7)" type="button" value=" 7 " /></td>
<td align="center"><input name="btnEight" onclick="NumPressed(8)" type="button" value=" 8 " /></td>
<td align="center"><input name="btnNine" onclick="NumPressed(9)" type="button" value=" 9 " /></td>
<td align="center"> </td>
<td align="center"><input name="btnNeg" onclick="Neg()" type="button" value=" +/- " /></td>
<td align="center"><input name="btnPercent" onclick="Percent()" type="button" value=" % " /></td>
</tr>
<tr>
<td align="center"><input name="btnFour" onclick="NumPressed(4)" type="button" value=" 4 " /></td>
<td align="center"><input name="btnFive" onclick="NumPressed(5)" type="button" value=" 5 " /></td>
<td align="center"><input name="btnSix" onclick="NumPressed(6)" type="button" value=" 6 " /></td>
<td align="center"> </td>
<td align="center"><input name="btnPlus" onclick="Operation('+')" type="button" value=" + " /></td>
<td align="center"><input name="btnMinus" onclick="Operation('-')" type="button" value=" - " /></td>
</tr>
<tr>
<td align="center"><input name="btnOne" onclick="NumPressed(1)" type="button" value=" 1 " /></td>
<td align="center"><input name="btnTwo" onclick="NumPressed(2)" type="button" value=" 2 " /></td>
<td align="center"><input name="btnThree" onclick="NumPressed(3)" type="button" value=" 3 " /></td>
<td align="center"> </td>
<td align="center"><input name="btnMultiply" onclick="Operation('*')" type="button" value=" * " /></td>
<td align="center"><input name="btnDivide" onclick="Operation('/')" type="button" value=" / " /></td>
</tr>
<tr>
<td align="center"><input name="btnZero" onclick="NumPressed(0)" type="button" value=" 0 " /></td>
<td align="center"><input name="btnDecimal" onclick="Decimal()" type="button" value=" . " /></td>
<td colspan="3" align="center"> </td>
<td align="center"><input name="btnEquals" onclick="Operation('=')" type="button" value=" = " /></td>
</tr>
</tbody>
</table>
</div>
</b>
</form>
<script language="Javascript">
<!-- modifica este script para tu uso -->
<!-- puedes cambiar tamaño y color de botones y fondo -->
<!-- Begin
var 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;
else
FKeyPad.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);
else
Accum = 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>
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