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cal.html
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cal.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>calculator</title>
<link rel="stylesheet" href="./cal.css">
</head>
<body>
<div class="container">
<div class="calc">
<form action="">
<div class="display">
<input type="text" name="display" id="display">
</div>
<div>
<input type="button" name="" id="ac" value="AC" onclick="display.value =''" >
<input type="button" name="" id="del" value="Del" onclick="display.value = display.value.toString().slice(0,-1)">
<input type="button" name="" id="" value="." onclick="display.value +='.'">
<input type="button" name="" id="" value="/" onclick="display.value +='/'">
</div>
<div>
<input type="button" name="" id="" value="7" onclick="display.value +='7'">
<input type="button" name="" id="" value="8" onclick="display.value +='8'">
<input type="button" name="" id="" value="9" onclick="display.value +='9'">
<input type="button" name="" id="" value="x" onclick="display.value +='*'">
</div>
<div>
<input type="button" name="" id="" value="4" onclick="display.value +='4'">
<input type="button" name="" id="" value="5" onclick="display.value +='5'">
<input type="button" name="" id="" value="6" onclick="display.value +='6'">
<input type="button" name="" id="" value="-" onclick="display.value +='-'">
</div>
<div>
<input type="button" name="" id="" value="1" onclick="display.value +='1'">
<input type="button" name="" id="" value="2" onclick="display.value +='2'">
<input type="button" name="" id="" value="3" onclick="display.value +='3'">
<input type="button" name="" id="" value="+" onclick="display.value +='+'">
</div>
<div>
<input type="button" name="" id="" value="00" onclick="display.value +='00'">
<input type="button" name="" id="" value="0" onclick="display.value +='0'">
<input type="button" name="" id="equal" class="equal" value="=" onclick="display.value =eval(display.value)">
</div>
</form>
</div>
</div>
<!-- practise -->
<div class="container">
<div class="calc">
<form action="">
<div class="display">
<input type="text" name="display" id="display">
</div>
<div>
<input type="button" value="+" onclick="display.value +='+'" >
<input type="button" value="=" onclick="display.value =eval(display.value)">
<input type="button" value="Ac" onclick="display.value ='' ">
<input type="button" value="del" onclick="display.value =display.value.toString().slice(0,-1)">
</div>
<div>
<input type="button" value="1" onclick="display.value +='1'" >
<input type="button" value="2" onclick="display.value +='2'" >
<input type="button" value="3" onclick="display.value +='3'" >
</div>
</form>
</div>
</div>
<script src="./cal.js"></script>
</body>
</html>