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docs/sphinx: Fix TOC scroll hack for the home page

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When on the documentation home page, there won't be any ".current"
element since no entry from the TOC was selected yet. That results in a
javascript error. Fix that by only trying to set the scrollTop if we
have matches for current entries.

Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240123162157.61819-2-gustavo.sousa@intel.com
This commit is contained in:
Gustavo Sousa 2024-01-23 13:21:58 -03:00 committed by Jonathan Corbet
parent 6613476e22
commit d2d0223441
1 changed files with 3 additions and 1 deletions
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4
Documentation/sphinx/templates/kernel-toc.html
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@ -12,5 +12,7 @@
<script type="text/javascript"> <!--
var sbar = document.getElementsByClassName("sphinxsidebar")[0];
let currents = document.getElementsByClassName("current")
sbar.scrollTop = currents[currents.length - 1].offsetTop;
if (currents.length) {
sbar.scrollTop = currents[currents.length - 1].offsetTop;
}
--> </script>