index.html

<textarea id="userInput" rows="4" cols="50"></textarea>
<button onclick="getResponse()">Get Response</button>
<div id="response"></div>

<script src="ai.js"></script>
<script>
    function getResponse() {
        const input = document.getElementById('userInput').value;
        const response = generateResponse(input);
        document.getElementById('response').innerText = response;
    }
</script>