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sample_cal.html
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sample_cal.html
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<!DOCTYPE html>
<html>
<head>
<title>sample_cal</title>
<script>
function dis(val) {
document.getElementById("edu").value+=val;
}
function solve() {
var x = document.getElementById("edu").value
var y = eval(x)
document.getElementById("edu").value = y
}
function clr() {
document.getElementById("edu").value = ""
}
</script>
<style>
.tab{margin: auto; background: #bbb9bc;}
table, td{border: 1px solid black; text-align: center;}
input[type="button"]
{border-radius: 10px; background: #fff; color: black; width: 90%;}
input[type="text"]
{border-radius: 10px; text-align: right; background-color:white; border-color: black; max-width:100%}
</style>
</head>
<body>
<table class="tab">
<tr>
<td><input type="button" value="c" onclick="clr()"/> </td>
<td colspan="3"><input type="text" id="edu"/></td>
</tr>
<tr>
<!-- creating buttons and assigning values-->
<td><input type="button" value="+" onclick="dis('+')"/> </td>
<td><input type="button" value="1" onclick="dis('1')"/> </td>
<td><input type="button" value="2" onclick="dis('2')"/> </td>
<td><input type="button" value="3" onclick="dis('3')"/> </td>
</tr>
<tr>
<td><input type="button" value="-" onclick="dis('-')"/> </td>
<td><input type="button" value="4" onclick="dis('4')"/> </td>
<td><input type="button" value="5" onclick="dis('5')"/> </td>
<td><input type="button" value="6" onclick="dis('6')"/> </td>
</tr>
<tr>
<td><input type="button" value="*" onclick="dis('*')"/> </td>
<td><input type="button" value="7" onclick="dis('7')"/> </td>
<td><input type="button" value="8" onclick="dis('8')"/> </td>
<td><input type="button" value="9" onclick="dis('9')"/> </td>
</tr>
<tr>
<td><input type="button" value="/" onclick="dis('/')"/> </td>
<td><input type="button" value="." onclick="dis('.')"/> </td>
<td><input type="button" value="0" onclick="dis('0')"/> </td>
<td><input type="button" value="=" onclick="solve()"/> </td>
</tr>
</table>
</body>
</html>