forked from y8tireu/NumEquator
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathscript.js
More file actions
64 lines (55 loc) · 1.79 KB
/
script.js
File metadata and controls
64 lines (55 loc) · 1.79 KB
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
52
53
54
55
56
57
58
59
60
61
62
63
document.getElementById('generate').addEventListener('click', () => {
const number = parseInt(document.getElementById('number').value);
const type = document.getElementById('type').value;
const operation = document.getElementById('operation').value;
if (isNaN(number) || number <= 0) {
alert('Please enter a positive number.');
return;
}
const resultsDiv = document.getElementById('results');
resultsDiv.innerHTML = '';
const isPrime = (num) => {
if (num < 2) return false;
for (let i = 2; i <= Math.sqrt(num); i++) {
if (num % i === 0) return false;
}
return true;
};
const isComposite = (num) => num > 1 && !isPrime(num);
const validNumbers = [];
for (let i = 1; i <= number; i++) {
if (type === 'prime' && !isPrime(i)) continue;
if (type === 'composite' && !isComposite(i)) continue;
validNumbers.push(i);
}
const equations = [];
if (operation === 'multiplication') {
validNumbers.forEach((x) => {
if (number % x === 0) {
equations.push(`${x} × ${number / x} = ${number}`);
}
});
} else if (operation === 'division') {
validNumbers.forEach((x) => {
equations.push(`${number * x} ÷ ${x} = ${number}`);
});
} else if (operation === 'addition') {
validNumbers.forEach((x) => {
equations.push(`${x} + ${number - x} = ${number}`);
});
} else if (operation === 'subtraction') {
validNumbers.forEach((x) => {
equations.push(`${x + number} - ${x} = ${number}`);
});
}
if (equations.length === 0) {
resultsDiv.innerHTML = '<p>No equations found.</p>';
} else {
equations.forEach((equation) => {
const div = document.createElement('div');
div.className = 'equation';
div.textContent = equation;
resultsDiv.appendChild(div);
});
}
});