-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathindex.html
51 lines (45 loc) · 906 Bytes
/
index.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Function library example</title>
<style>
input {
font-size: 2em;
margin: 10px 1px 0;
}
</style>
</head>
<body>
<input class="numberInput" type="text">
<p></p>
<script>
var input = document.querySelector('.numberInput');
var para = document.querySelector('p');
function squared(num) {
return num * num;
}
function cubed(num) {
return num * num * num;
}
function factorial(num) {
var x = num;
while (x > 1) {
num *= x - 1;
x--;
}
return num;
}
input.onchange = function() {
var num = input.value;
if (isNaN(num)) {
para.textContent = 'You need to enter a number!';
} else {
para.textContent = num + ' squared is ' + squared(num)
+ '. ' + num + ' cubed is ' + cubed(num)
+ '. ' + num + ' factorial is ' + factorial(num);
}
}
</script>
</body>
</html>