binary_converter/main.html at master · vrtome/binary_converter · GitHub

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<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8"/>
        <title>Binary - Decimal Converter</title>
        <link rel="stylesheet" href="./pagestyle.css"/>
        <script>
            function convert() {
                var num = document.getElementById('bNumber').value;
                num.split('').map((char) => {
                    if(char !== '0' && char !== '1') return alert('Please, write a binary number. Just 1 and 0.');
                });
                document.getElementById('result').value = parseInt(num, 2);
            }
        </script>
    </head>
    <body>
        <div class="interface">
            <header id="apptitle">
                    <h1>Binary - Decimal Converter</h1>
            </header>
            <form>
                <p><label for="bNumber">Binary Input: </label>
                    <input type="text" name="binary" id="bNumber" size="75" maxlength="75" placeholder="Binary Number"/></p>
                <p><label>Output: </label>
                <input type="number" name="result" id="result" size="75" maxlength="75" placeholder="Operation's result" readonly/></p>
                <input type="button" value="Convert" onClick="convert();"/>
            </form>
        </div>
    </body>
</html>