delete-in-password-field.html | Explore in Territory

<!doctype html>
<script src="../resources/runner.js"></script>
<div id="hidden" style="height:0px; overflow:hidden;"></div>
<input type="password">
<script>
const kCount = 100;
const hidden = document.getElementById('hidden');
const password = document.querySelector('input[type=password]');
hidden.innerHTML= '<p>foo bar</p>'.repeat(999);

PerfTestRunner.measureTime({
  description: 'Measures performance of delete in password field with many hidden elements',
  setup: () => {
    password.value = 'x'.repeat(kCount);
    password.focus();
  },
  run: () => {
    for (let counter = 0; counter < kCount; ++counter)
      document.execCommand('delete');
  },
});
</script>

chromium/third_party/blink/perf_tests/editing/delete-in-password-field.html