DOMPurify/demos/basic-demo.html

<!doctype html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <title>DOMPurify demo: Basic usage</title>
        <script src="../dist/purify.js"></script>
    </head>
    <body>
        <!-- Our DIV to receive content -->
        <div id="sanitized"></div>

        <!-- Now let's sanitize that content -->
        <script>
            'use strict';
            
            // Assuming DOMPurify is globally available
            // import DOMPurify from 'dompurify'; // Uncomment if using ES6 modules
            
            // Specify dirty HTML
            const dirty = '<p>HELLO<iframe/\/src=JavScript:alert&lpar;1)></ifrAMe><br>goodbye</p>';
            
            // Clean HTML string and write into our DIV
            const clean = DOMPurify.sanitize(dirty);
            document.getElementById('sanitized').innerHTML = clean;
        </script>
    </body>
</html>