base64-decode-encode/index.html at main · xta/base64-decode-encode · GitHub

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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
<!doctype html>
<html>

<head>
    <meta charset='utf-8'>
    <title>base64 decode & encode strings (all local)</title>
    <style>
        body {
            padding: 20px;
            margin-bottom: 20px;
        }

        textarea {
            width: 80%;
            height: 300px;
            padding: 4px;
            margin-left: 1rem;
        }

        textarea.error {
            outline: 2px solid crimson;
        }

        .container {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .leading {
            grid-column: 1;
        }

        .trailing {
            grid-column: 2;
        }

        footer {
            padding: 20px;
        }
    </style>

</head>

<body>
    <h1>base64 decode & encode (all local)</h1>
    <p>We do not record anything. All logic is done on the client side.</p>

    <div class="container">

        <div class="leading">
            <h2>decoded text (edit me)</h2>
            <textarea id="decoded">Hello world</textarea>
        </div>

        <div class="trailing">
            <h2>encoded base64 (edit me)</h2>
            <textarea id="encoded"></textarea>
        </div>

        <footer>
            <a href="https://rexfeng.com">xta</a> 2024 - 2026 <a href="https://github.com/xta/base64-decode-encode">view on
                github</a>
        </footer>
    </div>
</body>

<script type="module">
    import { encode, decode } from './base64.js';

    const decodedEl = document.getElementById('decoded');
    const encodedEl = document.getElementById('encoded');

    decodedEl.addEventListener('input', () => {
        encodedEl.value = encode(decodedEl.value);
        encodedEl.classList.remove('error');
    });

    encodedEl.addEventListener('input', () => {
        try {
            decodedEl.value = decode(encodedEl.value);
            encodedEl.classList.remove('error');
        } catch {
            encodedEl.classList.add('error');
        }
    });

    // initialize
    encodedEl.value = encode(decodedEl.value);
</script>

</html>