<!DOCTYPE html>
<html>
<meta name="content-type" content="text/html; charset=UTF-8">
<head>
<title>Calculator</title>
<>
<script type="text/javascript">
var numresult;
var str;
function onclicknum(nums) {
str = document.getElementById("nummessege");
str.value = str.value + nums;
}
function onclickclear() {
str = document.getElementById("nummessege");
str.value = "";
}
function onclickresult() {
str = document.getElementById("nummessege");
numresult = eval(str.value);
str.value = numresult;
}
</script>
</head>
<body bgcolor="affff" >
<>
<table border="1" align="center" bgColor="#bbff77"
style="height: 350px; width: 270px">
<tr>
<td colspan="4">
<input type="text" id="nummessege"
style="height: 90px; width: 350px; font-size: 50px" />
</td>
</tr>
<tr>
<td>
<input type="button" value="1" id="1"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="2" id="2"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="3" id="3"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="+" id="add"
style="height: 70px; width: 90px; font-size: 35px">
</td>
</tr>
<tr>
<td>
<input type="button" value="4" id="4"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="5" id="5"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="6" id="6"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="-" id="sub"
style="height: 70px; width: 90px; font-size: 35px">
</td>
</tr>
<tr>
<td>
<input type="button" value="7" id="7"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="8" id="8"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="9" id="9"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="*" id="mul"
style="height: 70px; width: 90px; font-size: 35px">
</td>
</tr>
<tr>
<td colspan="2">
<input type="button" value="0" id="0"
style="height: 70px; width: 190px; font-size: 35px">
</td>
<td>
<input type="button" value="." id="point"
style="height: 70px; width: 90px; font-size: 35px">
</td>
<td>
<input type="button" value="/" id="division"
onclick="onclicknum('/')"
style="height: 70px; width: 90px; font-size: 35px">
</td>
</tr>
<tr>
<td colspan="2">
<input type="button" value="Del" id="clear"
onclick="onclickclear()"
style="height: 70px; width: 190px; font-size: 35px" />
</td>
<td colspan="2">
<input type="button" value="=" id="result"
onclick="onclickresult()"
style="height: 70px; width: 190px; font-size: 35px" />
</td>
</tr>
</table>
</body>
</html>
