Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:73.0) Gecko/20100101 Firefox/73.0
Firefox 73
Mac OS X 10.15
Desktop
4 years ago
Test name Executions per second
isFunction 43191596.0 Ops/sec
typeof function 166747744.0 Ops/sec
instanceof 97315448.0 Ops/sec
wrapped typeof function (like optimized _.isFunction) 77489424.0 Ops/sec
HTML Preparation code:
Script Preparation code:
Tests:
  • isFunction

  • typeof function

  • instanceof

  • wrapped typeof function (like optimized _.isFunction)