You can no longer simply use prompt(). You must use window.prompt() instead.
const name = window.prompt("What is your name?");
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="../styles.css">
<title>JavaScript: window.prompt()</title>
</head>
<body>
<h1>JavaScript: window.prompt()</h1>
<button id="prompt-button">window.prompt()</button>
<div id="prompt-div"></div>
<script>
let button = document.getElementById('prompt-button');
let prompt = document.getElementById('prompt-div');
button.addEventListener('click', () => {
console.log("button pressed");
const name = window.prompt("What is your name?");
prompt.innerHTML = `
<h3>${name} is a great name.</h3> `;
});
</script>
<p>You can no longer simply use prompt(). You must use window.prompt() instead.</p>
<pre>
const name = window.prompt("What is your name?");
</pre>
<?php
include('../show_code.php');
show_code('index.php');
?>
</body>
</html>