پی سی سیتی - ماشین حساب جاوا java-script-calculator (ماشین حساب به زبان جاوا اسکریپت)

ماشین حساب جاوا java-script-calculator (ماشین حساب به زبان جاوا اسکریپت)
کد:
<CENTER>

<FORM name="Keypad" action="">

<TABLE>

<B>

<TABLE border=0 width=50 height=60 cellspacing=5 style="border: 1px solid #CC3300">

<TR>

<TD colspan=3 align=middle>

<input name="ReadOut" type="Text" size=24 value="0" width=100%>

</TD>

<TD

</TD>

<TD style="border: 1px solid #CCCCFF" align="center">

<input name="btnClear" type="button" value="  C  " onclick="Clear()" style="width: 40">

</TD>

<TD style="border: 1px solid #CCCCFF" align="center">

<input name="btnClearEntry" type="button" value="  CE " onclick="ClearEntry()" style="width: 40">

</TD>

</TR>

<TR>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnSeven" type="Button" value="  7  " onclick="NumPressed(7)">

</TD>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnEight" type="Button" value="  8  " onclick="NumPressed(8)">

</TD>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnNine" type="Button" value="  9  " onclick="NumPressed(9)">

</TD>

<TD height="30">

</TD>

<TD style="border: 1px solid #CCCCFF" align="center" height="30">

<input name="btnNeg" type="button" value=" +/- " onclick="Neg()" style="width: 40">

</TD>

<TD style="border: 1px solid #CCCCFF" align="center" height="30">

<input name="btnPercent" type="button" value="  % " onclick="Percent()" style="width: 40">

</TD>

</TR>

<TR>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnFour" type="Button" value="  4  " onclick="NumPressed(4)">

</TD>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnFive" type="Button" value="  5  " onclick="NumPressed(5)">

</TD>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnSix" type="Button" value="  6  " onclick="NumPressed(6)">

</TD>

<TD height="30">

</TD>

<TD align=middle style="border: 1px solid #CCCCFF" height="30">

<input name="btnPlus" type="button" value="  +  " onclick="Operation('+')" style="width: 40">

</TD>

<TD align=middle style="border: 1px solid #CCCCFF" height="30">

<input name="btnMinus" type="button" value="   -   " onclick="Operation('-')" style="width: 40">

</TD>

</TR>

<TR>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnOne" type="Button" value="  1  " onclick="NumPressed(1)">

</TD>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnTwo" type="Button" value="  2  " onclick="NumPressed(2)">

</TD>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnThree" type="Button" value="  3  " onclick="NumPressed(3)">

</TD>

<TD height="30">

</TD>

<TD align=middle style="border: 1px solid #CCCCFF" height="30">

<input name="btnMultiply" type="button" value="  ×  " onclick="Operation('*')" style="width: 40">

</TD>

<TD align=middle style="border: 1px solid #CCCCFF" height="30">

<input name="btnDivide" type="button" value="   /   " onclick="Operation('/')" style="width: 40">

</TD>

</TR>

<TR>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnZero" type="Button" value="  0  " onclick="NumPressed(0)">

</TD>

<TD style="border: 1px solid #FFCC66" align="center" height="30">

<input name="btnDecimal" type="Button" value="   .  " onclick="Decimal()">

</TD>

<TD colspan=4 height="30">

<B>

<p align="right">

<input name="btnEquals" type="button" value="  =  " onclick="Operation('=')" style="width: 90">

</B>

</TD>

</TR>

</TABLE>

</TABLE>

</B>

</FORM>

</CENTER>

<font face="Verdana, Arial, Helvetica" size=2>

<SCRIPT LANGUAGE="JavaScript">

<!-- Begin

var FKeyPad = document.Keypad;

var Accumulate = 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 )

Accumulate += parseFloat(Readout);

else if ( '-' == PendingOp )

Accumulate -= parseFloat(Readout);

else if ( '/' == PendingOp )

Accumulate /= parseFloat(Readout);

else if ( '*' == PendingOp )

Accumulate *= parseFloat(Readout);

else

Accumulate = parseFloat(Readout);

FKeyPad.ReadOut.value = Accumulate;

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 () {

Accumulate = 0;

PendingOp = "";

ClearEntry();

}

function Neg () {

FKeyPad.ReadOut.value = parseFloat(FKeyPad.ReadOut.value) * -1;

}

function Percent () {

FKeyPad.ReadOut.value = (parseFloat(FKeyPad.ReadOut.value) / 100) * parseFloat(Accumulate);

}

// End -->

</SCRIPT>



<!-- End Code  -->