Object Keys Vs For In (v9)

Revision 9 of this benchmark created by QJ on February 14, 2015

Setup

var jsonObj = {}
    for (var i = 0; i < 50000; i++) jsonObj[i] = i;

Test runner

Object.keys(jsonObj).forEach(function(k) {
  var v = jsonObj[k];
})

for (var k in jsonObj) {
  var v = jsonObj[k];
}

Revisions

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

• Revision 1: published by Danny on September 15, 2012
• Revision 2: published on September 21, 2012
• Revision 3: published by art kub on September 8, 2014
• Revision 4: published on September 8, 2014
• Revision 5: published by James White on September 10, 2014
• Revision 6: published on October 2, 2014
• Revision 7: published by my name on December 21, 2014
• Revision 8: published on January 27, 2015
• Revision 9: published by QJ on February 14, 2015
• Revision 10: published on February 15, 2015