Info

Checking if "complex" request to querySelectorAll performs against several getElementsByTagName.

Preparation code

<nav id="menu">
  <ul>
    <li class="first">
      <img scr="icon1.webp">
      <a href="#">item 1</a>
      <kbd>
        ctrl + A
      </kbd>
      <ul>
        <li class="second">
          <img scr="icon1.webp">
          <a href="#">item 1</a>
          <kbd>
            ctrl + X
          </kbd>
        </li>
        <li class="second">
          <img scr="iconb.webp">
          <a href="#">item 2</a>
          <kbd>
            ctrl + Y
          </kbd>
        </li>
        <li class="second">
          <img scr="icon3.webp">
          <a href="#">item 3</a>
          <kbd>
            ctrl + Z
          </kbd>
        </li>
      </ul>
    </li>
    <li class="first">
      <img scr="icon2.webp">
      <a href="#">item 2</a>
      <kbd>
        ctrl + B
      </kbd>
      <ul>
        <li class="second">
          <img scr="icon1.webp">
          <a href="#">item 1</a>
          <kbd>
            ctrl + X
          </kbd>
        </li>
        <li class="second">
          <img scr="iconb.webp">
          <a href="#">item 2</a>
          <kbd>
            ctrl + Y
          </kbd>
        </li>
        <li class="second">
          <img scr="icon3.webp">
          <a href="#">item 3</a>
          <kbd>
            ctrl + Z
          </kbd>
        </li>
      </ul>
    </li>
    <li class="first">
      <img scr="icon3.webp">
      <a href="#">item 3</a>
      <kbd>
        ctrl + C
      </kbd>
      <ul>
        <li class="second">
          <img scr="icon1.webp">
          <a href="#">item 1</a>
          <kbd>
            ctrl + X
          </kbd>
        </li>
        <li class="second">
          <img scr="iconb.webp">
          <a href="#">item 2</a>
          <kbd>
            ctrl + Y
          </kbd>
        </li>
        <li class="second">
          <img scr="icon3.webp">
          <a href="#">item 3</a>
          <kbd>
            ctrl + Z
          </kbd>
        </li>
      </ul>
    </li>
    <li class="first">
      <img scr="icon4.webp">
      <a href="#">item 4</a>
      <kbd>
        ctrl + D
      </kbd>
      <ul>
        <li class="second">
          <img scr="icon1.webp">
          <a href="#">item 1</a>
          <kbd>
            ctrl + X
          </kbd>
        </li>
        <li class="second">
          <img scr="iconb.webp">
          <a href="#">item 2</a>
          <kbd>
            ctrl + Y
          </kbd>
        </li>
        <li class="second">
          <img scr="icon3.webp">
          <a href="#">item 3</a>
          <kbd>
            ctrl + Z
          </kbd>
        </li>
      </ul>
    </li>
    <li class="first">
      <img scr="icon5.webp">
      <a href="#">item 5</a>
      <kbd>
        ctrl + E
      </kbd>
      <ul>
        <li class="second">
          <img scr="icon1.webp">
          <a href="#">item 1</a>
          <kbd>
            ctrl + X
          </kbd>
        </li>
        <li class="second">
          <img scr="iconb.webp">
          <a href="#">item 2</a>
          <kbd>
            ctrl + Y
          </kbd>
        </li>
        <li class="second">
          <img scr="icon3.webp">
          <a href="#">item 3</a>
          <kbd>
            ctrl + Z
          </kbd>
        </li>
      </ul>
    </li>
  </ul>
</nav>

Preparation code output

Test runner

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Java applet disabled.

var nodes = document.querySelectorAll('.second a, .second kbd'),
    a, i, m;
for (i = 0, m = nodes.length; i < m; i++) {
  a = nodes[i];
}

var lis = document.getElementsByClassName('second'),
    nodes, a, i, j, m, n;
for (i = 0, m = lis.length; i < m; i++) {
  nodes = lis[i].getElementsByTagName('a');
  for (j = 0, n = nodes.length; j < n; j++) {
    a = nodes[j];
  }
  nodes = lis[i].getElementsByTagName('kbd');
  for (j = 0, n = nodes.length; j < n; j++) {
    a = nodes[j];
  }
}

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published by Andrew Hedges on 22nd September 2010
• Revision 17: published on 20th December 2010
• Revision 20: published by Jeff Larson on 21st January 2011
• Revision 21: published by Sebastian Poreba on 12th March 2011
• Revision 22: published by MONTILLET on 14th June 2011
• Revision 25: published on 27th March 2012
• Revision 26: published on 27th April 2012
• Revision 27: published by Philip Tellis on 28th June 2012
• Revision 28: published by Carl Letourneau on 28th June 2012
• Revision 29: published on 28th June 2012
• Revision 30: published by Philip Tellis on 28th June 2012
• Revision 32: published on 15th July 2012
• Revision 33: published on 17th July 2012
• Revision 34: published on 17th July 2012
• Revision 35: published on 15th August 2012
• Revision 36: published on 15th August 2012
• Revision 37: published by Derp on 19th August 2012
• Revision 38: published on 3rd September 2012
• Revision 39: published on 18th September 2012
• Revision 40: published by Zebulon84 on 11th October 2012
• Revision 41: published by Jim Montgomery on 28th December 2012
• Revision 42: published by Jim Montgomery on 28th December 2012
• Revision 43: published on 28th December 2012
• Revision 44: published by Jim Montgomery on 28th December 2012
• Revision 45: published on 16th February 2013
• Revision 46: published on 26th February 2013
• Revision 47: published on 6th March 2013
• Revision 48: published by Adam on 1st April 2013
• Revision 50: published by foob 2 days ago
• Revision 51: published by foob 2 days ago

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