Demo with Browser Extension Tern plugin
See
https://github.com/angelozerr/tern-browser-extension
for more infos.
<html> <body> <div id="MyId"></div> <div id="MyId2"></div> <input id="MyInput" /> <script> // test with createElement var input = document.createElement('input'); input.querySelector("body #"); </script> </body> </html>