chromium/third_party/blink/web_tests/external/wpt/webstorage/storage_session-manual.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>WebStorage Test: session storage</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<meta name="flags" content="interact">

<h2>Description</h2>
<p>
  This test validates that store the data using Session Storage which means that even if you close the page, and re-open it, the data saved before should be lost.
</p>

<ol class="instructions">
  <li>
    Click the "Clear" button, refresh the page once and then check if the page shows "You have viewed this page 1 time(s)"
  </li>
  <li>
    Close the page, re-open it and then check if the page still shows "You have viewed this page 1 time(s)"
  </li>
  <li>
    If the above two steps are all true the test case pass, otherwise it fail.<br>
  </li>
</ol>

<p>
  <h2>You have viewed this page
  <span id="count">an untold number of</span>
  time(s).</h2>
  <button type="button" onclick="javascript:sessionStorage.pageLoadCount = 0;"><h3>Clear</h3></button>
</p>

<script>

    if (!sessionStorage.pageLoadCount) {
        sessionStorage.pageLoadCount = 0;
    }
    sessionStorage.pageLoadCount = parseInt(sessionStorage.pageLoadCount) + 1;
    document.getElementById('count').textContent = sessionStorage.pageLoadCount;

</script>