Just poking around, could you explain why <a href="https:&#x2F;&#x2F;jsperf.com&#x2F;indexof-vs-object-lookup&#x2F;32" rel="nofollow">https:&#x2F;&#x2F;jsperf.com&#x2F;indexof-vs-object-lookup&#x2F;32</a> indexOf is the fastest in this revision?