Calculater
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
<style>
.hh-100{
height: 100vh !important;
}
</style>
</head>
<body>
<div class="d-flex justify-content-center align-items-center hh-100">
<div class="col-12 col-lg-4 card">
<div class="p-2">
<input type="number" class="form-control" id="num1" placeholder="Input Number 1"/>
</div>
<div class="p-2">
<input type="number" class="form-control" id="num2" placeholder="Input Number 2"/>
</div>
<div class="p-2">
<input type="number" class="form-control" disabled id="result" placeholder="Result"/>
</div>
<!-- ======================================================== -->
<div class="container p-2">
<div class="row">
<div class="col-3">
<button class="btn btn-primary btn-block w-100">1</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">2</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">3</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">+</button>
</div>
</div>
<!-- =================================== -->
<div class="row mt-2">
<div class="col-3">
<button class="btn btn-primary btn-block w-100">4</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">5</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">6</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">-</button>
</div>
</div>
<!-- =================================== -->
<!-- =================================== -->
<div class="row mt-2">
<div class="col-3">
<button class="btn btn-primary btn-block w-100">7</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">8</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">9</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">*</button>
</div>
</div>
<!-- =================================== -->
<!-- =================================== -->
<div class="row mt-2">
<div class="col-3">
<button onclick="clear();" class="btn btn-primary btn-block w-100">A/c</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">0</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">.</button>
</div>
<div class="col-3">
<button class="btn btn-primary btn-block w-100">/</button>
</div>
</div>
<!-- =================================== -->
</div>
</div>
</div>
<script>
function test(){
alert("test");
}
function clear(){
alert("clear");
//num1.value=num2.value=result.value=0;
}
let num1=document.getElementById('num1');
let num2=document.getElementById('num2');
let result=document.getElementById('result');
</script>
</body>
</html>
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