globalVariableTest.html

<!DOCTYPE html>
<html>
    <head>
    </head>
    <body>
        <form id="textForm">
            <input type="text" id="textInput" value="https://docs.google.com/spreadsheets/d/e/2PACX-1vQCho2k88nLWrNSXj4Mgj_MwER5GQ9zbZ0OsO3X_QPa9s-3UkoeLLQHuNHoFMKqCFjWMMprKVHMZzOj/pub?gid=0&single=true&output=csv">
            <button type="submit">URL laden</button>
        </form>
        <button type="submit" id="submitButton">Datei laden</button>
        <div id="result"></div>
    </body>
    <script>

        const textForm = document.getElementById('textForm');
        textForm.addEventListener('submit', event =>{let inputURL = fileFromUrlTest()});

        const submitButton = document.getElementById('submitButton');
        submitButton.addEventListener('click', writeOutput);

        async function fileFromUrlTest() {
            event.preventDefault();
            const inputURL = document.getElementById('textInput').value;
            return inputURL
        }

        function writeOutput() {
            writeFile(inputURL)
        }

        function writeFile(data) {
            const resultDiv = document.getElementById('result');
            resultDiv.innerHTML = data
        }
    </script>
</html>