Array unshift vs prepend vs concat (v31)

Revision 31 of this benchmark created by Mark Caudill on February 22, 2015

Preparation HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"></script>

Setup

var a = _.range(0, 10000)

Test runner

[0].concat(a);

a.unshift(0);

a.slice(0).unshift(0);

a.reverse().push(0);
a.reverse();

a.splice(0, 0, 0);

Revisions

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

• Revision 1: published on June 1, 2011
• Revision 2: published on January 13, 2012
• Revision 3: published on January 15, 2012
• Revision 4: published on January 24, 2012
• Revision 5: published by aranor on January 25, 2012
• Revision 6: published by James on December 19, 2012
• Revision 7: published on December 20, 2012
• Revision 8: published by vincent piel on April 29, 2013
• Revision 9: published on May 12, 2013
• Revision 10: published on September 8, 2013
• Revision 11: published by Juho Teperi on October 18, 2013
• Revision 12: published by Robin Cloutman on January 23, 2014
• Revision 13: published on June 22, 2014
• Revision 14: published on July 31, 2014
• Revision 15: published on July 31, 2014
• Revision 16: published on August 7, 2014
• Revision 18: published on August 12, 2014
• Revision 20: published on September 8, 2014
• Revision 21: published by Al on September 9, 2014
• Revision 22: published on October 4, 2014
• Revision 23: published on November 23, 2014
• Revision 24: published on November 29, 2014
• Revision 25: published on November 29, 2014
• Revision 28: published on January 7, 2015
• Revision 30: published on February 22, 2015
• Revision 31: published by Mark Caudill on February 22, 2015