Here is how you clear a textarea on button click in Jquery.
Step 1. Add onclick listener event to button
Step 2. Get the specified textarea field by using $("#id")
Step 3. Clear the textarea by using the val() method
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>wecode101 clear textarea</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
</head>
<body>
<main>
<!--Main layout-->
<div class="container">
<div class="col-9 mx-auto">
<div class="mb-3">
<textarea id="more-info" class="form-control" name="more-info"></textarea>
</div>
<button type="button" class="btn btn-primary" id="clear-info">clear info</button>
</div>
</div>
</main>
</body>
</html>
JS
$( "#clear-info" ).click(function() {
$("#more-info").val(''); //get and clear the textarea
});