instanceof vs typeof

Benchmark created on August 26, 2010

Preparation HTML

<script>
  function f() {
  
  }
  var x;
</script>

Test runner

x = (typeof(f) === "function");

x = (f instanceof Function);

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 1: published on August 26, 2010
• Revision 2: published on March 23, 2012
• Revision 3: published by Damion Grimfield on April 19, 2012
• Revision 4: published by Sergey Kononenko on May 4, 2012
• Revision 5: published on June 18, 2012
• Revision 8: published by alexz on August 23, 2014
• Revision 9: published on September 14, 2014
• Revision 10: published by Dillon on November 12, 2014
• Revision 12: published by Dracco on May 19, 2015
• Revision 13: published by Peter on August 8, 2015
• Revision 14: published by Dylan on August 14, 2015
• Revision 15: published on June 9, 2023