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calculator.html
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calculator.html
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<html>
<head>
<title>Calculator</title>
<script>
//function that display value
function cal(val)
{
document.getElementById("result").value+=val;
}
//function that evaluates the digit and return result
function solve()
{
let x = document.getElementById("result").value;
let y = eval(x);
document.getElementById("result").value = y;
}
//function that clear the display
function clr()
{
document.getElementById("result").value = "";
}
</script>
<!-- for styling -->
<style>
input[type="button"]
{
font-size: 45px;
background-color: white;
color: #add8e6;
width:120px;
height:120px;
}
input[type="button"]:hover
{
box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
background-color:#add8e6;
color: black;
}
input[type="button"]:focus{
background-color:#add8e6;
color: black;
}
input[type="button"]:active{
background-color: #DDDDDD;
box-shadow: 0 5px #666;
transform: translateY(4px);
}
input[type="text"]
{
background-color:white;
border: solid black 2px;
width: 380px;
text-align: right;
height:120px;
font-size:50px;
}
table{
margin: 0 auto;
border-collapse:collapse;
}
body{
background: linear-gradient(to bottom right, #33ccff 0%, #ffffff 100%);
}
</style>
</head>
<!-- create table -->
<body>
<div class="background">
<table border="1">
<tr>
<td colspan="3"><input type="text" id="result"/></td>
<!-- clr() function will call clr to clear all value -->
<td><input type="button" value="c" onclick="clr()" /> </td>
</tr>
<tr>
<!-- create button and assign value to each button -->
<!-- dis("1") will call function dis to display value -->
<td><input type="button" value="1" onclick="cal('1')"/> </td>
<td><input type="button" value="2" onclick="cal('2')"/> </td>
<td><input type="button" value="3" onclick="cal('3')"/> </td>
<td><input type="button" value="/" onclick="cal('/')"/> </td>
</tr>
<tr>
<td><input type="button" value="4" onclick="cal('4')"/> </td>
<td><input type="button" value="5" onclick="cal('5')"/> </td>
<td><input type="button" value="6" onclick="cal('6')"/> </td>
<td><input type="button" value="-" onclick="cal('-')"/> </td>
</tr>
<tr>
<td><input type="button" value="7" onclick="cal('7')"/> </td>
<td><input type="button" value="8" onclick="cal('8')"/> </td>
<td><input type="button" value="9" onclick="cal('9')"/> </td>
<td><input type="button" value="+" onclick="cal('+')"/> </td>
</tr>
<tr>
<td><input type="button" value="." onclick="cal('.')"/> </td>
<td><input type="button" value="0" onclick="cal('0')"/> </td>
<!-- solve function call function solve to evaluate value -->
<td><input type="button" value="=" onclick="solve()"/> </td>
<td><input type="button" value="*" onclick="cal('*')"/> </td>
</tr>
</table>
</div>
</body>
</html>