[HTML] Add/Delete Items (twoFiles)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Add or Delete Items</title>
    <script src="https://code.jquery.com/jquery-3.0.0.min.js"></script>
    <script src="scripts/script.js"></script>
    <style>
        li a {display: none}
        li:hover a {display: inline}
    </style>
</head>
<body>
<h1>List of Items</h1>
<ul id="items">
</ul>
<input type="text" id="newItemText"/>
<input type="button" value="Add" onclick="addItem()">
</body>
</html>