<html>
<script>
    function generateHTML(count) {
        let html = '';
        for (let i = 0; i < count; i++) {
            html += `<div>
                    <h2>Item ${i}</h2>
                    <p>This is paragraph number ${i}</p>
                    <ul>
                    <li>A</li><li>B</li><li>C</li>
                    </ul>
                    </div>`;
        }
        return html;
    }

    function run() {
        const result = document.getElementById("result");
        const html = generateHTML(15000);
        const parser = new DOMParser();

        const start = performance.now();
        const doc = parser.parseFromString(html, "text/html");
        const end = performance.now();

        const result_text = (end - start).toFixed(0);
        result.textContent = `Total: ${result_text} ms`;
        alert("TESTCASE_PROFILING: parsefromstring:" + result_text);
    };
</script>

<body onload="run()">
    <button id="run">Run Script</button>
    <div id="result"></div>
</body>

</html>