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index.html
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index.html
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<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="style.css">
</head>
<body>
<div class="container">
<div class="calculator">
<input type="text" placeholder="0" id="output">
<button class="clear" onclick="cl()">AC</button>
<button class="clear" onclick="del()">DEL</button>
<button onclick="display('%')">%</button>
<button onclick="display('/')">/</button>
<button onclick="display('7')">7</button>
<button onclick="display('8')">8</button>
<button onclick="display('9')">9</button>
<button onclick="display('*')">*</button>
<button onclick="display('4')">4</button>
<button onclick="display('5')">5</button>
<button onclick="display('6')">6</button>
<button onclick="display('-')">-</button>
<button onclick="display('1')">1</button>
<button onclick="display('2')">2</button>
<button onclick="display('3')">3</button>
<button onclick="display('+')">+</button>
<button class="empty" onclick="display('')"></button>
<button onclick="display('0')">0</button>
<button class="cal" onclick="calculate()">=</button>
</div>
</div>
<script>
let out=document.getElementById("output");
function display(num){
output.value+=num;
}
function calculate(){
try{
output.value=eval(output.value)
}
catch{
alert("invalid")
}
}
function cl(){
output.value="";
}
function del(){
output.value=output.value.slice(0,-1);
}
</script>
</body>
</html>