silahkan copy coding berikut ke dalam html anda yaitu dibagian badan program yang telah anda buat
<body>
<center>
<form name="Keypad" action>
<table border="1" bgcolor="#838383">
<tr>
<td colspan="5" bgcolor="#DFDFDF">
<input name="ReadOut" type="Text" size="30" value="0">
</td>
</tr>
<tr>
<td bgcolor="#DFDFDF">
<input name="btnSeven" type="Button" value=" 7 " onClick="NumPressed(7)">
</td>
<td bgcolor="#DFDFDF">
<input name="btnEight" type="Button" value=" 8 " onClick="NumPressed(8)">
</td>
<td bgcolor="#DFDFDF">
<input name="btnNine" type="Button" value=" 9 " onClick="NumPressed(9)">
</td>
<td bgcolor="#DFDFDF"><input name="btnNeg" type="Button" value=" +/- " onClick="Neg()"></td>
<td bgcolor="#DFDFDF"><input name="btnPercent" type="Button" value=" % " onClick="Percent()"></td>
</tr>
<tr>
<td bgcolor="#DFDFDF">
<input name="btnFour" type="Button" value=" 4 " onClick="NumPressed(4)">
</td>
<td bgcolor="#DFDFDF">
<input name="btnFive" type="Button" value=" 5 " onClick="NumPressed(5)">
</td>
<td bgcolor="#DFDFDF">
<input name="btnSix" type="Button" value=" 6 " onClick="NumPressed(6)">
</td>
<td bgcolor="#DFDFDF"><input name="btnPlus" type="Button" value=" + "
onClick="Operation('+')"></td>
<td bgcolor="#DFDFDF"><input name="btnMultiply" type="Button" value=" * "
onClick="Operation('*')"></td>
</tr>
<tr>
<td bgcolor="#DFDFDF">
<input name="btnOne" type="Button" value=" 1 " onClick="NumPressed(1)">
</td>
<td bgcolor="#DFDFDF">
<input name="btnTwo" type="Button" value=" 2 " onClick="NumPressed(2)">
</td>
<td bgcolor="#DFDFDF">
<input name="btnThree" type="Button" value=" 3 " onClick="NumPressed(3)">
</td>
<td bgcolor="#DFDFDF"><input name="btnMinus" type="Button" value=" - "
onClick="Operation('-')"></td>
<td bgcolor="#DFDFDF"><input name="btnDivide" type="Button" value=" / "
onClick="Operation('/')"></td>
</tr>
<tr>
<td bgcolor="#DFDFDF">
<input name="btnZero" type="Button" value=" 0 " onClick="NumPressed(0)">
</td>
<td bgcolor="#DFDFDF">
<input name="btnDecimal" type="Button" value=" . " onClick="Decimal()">
</td>
<td colspan="3" bgcolor="#797979">
<input name="btnClear" type="Button" value=" C " onClick="Clear()">
<input name="btnClearEntry" type="Button" value=" CE " onClick="ClearEntry()">
<input name="btnEquals" type="Button" value=" = " onClick="Operation('=')"></td>
</tr>
</table>
</form>
</center>
<font face="Verdana, Arial, Helvetica" size=2>
<script LANGUAGE="JavaScript">
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);
}
</script>
</body>
contoh :
selamat mencoba kawan.
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