Calculator--HTML-CSS-JavaScript/calculator.html at master · sulemangit/Calculator--HTML-CSS-JavaScript · GitHub

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<!DOCTYPE html>
<html>
<head>
	<title>Assignment 1</title>
	<style type="text/css">
		.button{
			width: 40px;
			height: 30px;
			background: orange;
		}
		.display input
		{
position: relative;
left: 4px;
top: 4px;
height: 35px;
/*width: 70px;*/
color: black;
/*text-align: right;*/
font-size: 15px;
		}
	</style>

	<script type="text/javascript">
		function c(val)
		{
		document.getElementById("display").value = val;
		}
		function math(val)
		{
		document.getElementById("display").value += val;
		}
		function e()
		{
			c(eval(document.getElementById("display").value))

		}
	</script>
</head>
<body>
<div align="center">
	<div class ="display">
	<input type="text" size="15" id="display" style="margin-left:7px" readonly>
	<div class="keys">
	<p>
		<input type="button" class="button" value="(" onclick='math("(")'>
		<input type="button" class="button" value=")" onclick='math(")")'>
		<input type="button" class="button" value="/" onclick='math("/")'>
		<input type="button" class="button" value="=" onclick='e()'>
	</p>
	<p>
		<input type="button" class="button" value="7" onclick='math("7")'>
		<input type="button" class="button" value="8" onclick='math("8")'>
		<input type="button" class="button" value="9" onclick='math("9")'>
		<input type="button" class="button" value="*" onclick='math("*")'>
	</p>
	<p>
		<input type="button" class="button" value="4" onclick='math("4")'>
		<input type="button" class="button" value="5" onclick='math("5")'>
		<input type="button" class="button" value="6" onclick='math("6")'>
		<input type="button" class="button" value="-" onclick='math("-")'>
	</p>
	<p>
		<input type="button" class="button" value="1" onclick='math("1")'>
		<input type="button" class="button" value="2" onclick='math("2")'>
		<input type="button" class="button" value="3" onclick='math("3")'>
		<input type="button" class="button" value="+" onclick='math("+")'>
	</p>
	<p>
		<input type="button" class="button" value="0" onclick='math("0")'>
		<input type="button" class="button" value="." onclick='math(".")'>
		<input type="button" class="button" value="C" onclick='c("")'>
	</p>
	</div>
	</div>
	</div>
</body>

</html>