hasOwnProperty vs in vs undefined (v62)

Revision 62 of this benchmark created by Dmitry Matveev on August 31, 2014

Setup

var Iobj = {
      SUPPORT_ACTIONS: 0x1
    };
    var obj = {
      actions: true,
      support: Iobj.SUPPORT_ACTIONS
    };
    var undefined;

Test runner

if (obj.hasOwnProperty("actions")) {
  return true;
}

if ("actions" in obj) {
  return true;
}

if (typeof obj.actions !== 'undefined') {
  return true;
}

if (obj.actions !== undefined) {
  return true;
}

if (obj.support & Iobj.SUPPORT_ACTIONS) return true;

if (obj['actions'] !== undefined) {
  return true;
}

if (typeof obj['actions'] !== 'undefined') {
  return true;
}

if (!obj['support']) {
  return true;
}

Revisions

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

• Revision 1: published on November 4, 2011
• Revision 2: published on November 8, 2011
• Revision 3: published on November 12, 2011
• Revision 4: published on November 12, 2011
• Revision 5: published on December 13, 2011
• Revision 6: published on December 13, 2011
• Revision 7: published by Bei on December 14, 2011
• Revision 8: published by Bei on December 14, 2011
• Revision 9: published on December 14, 2011
• Revision 10: published on February 27, 2012
• Revision 12: published on June 28, 2012
• Revision 13: published by ddsadasdw243 on August 22, 2012
• Revision 15: published on September 7, 2012
• Revision 16: published on September 9, 2012
• Revision 17: published by Tal on January 9, 2013
• Revision 18: published by Andrew F on February 14, 2013
• Revision 19: published by Andrew F on February 14, 2013
• Revision 25: published on April 3, 2013
• Revision 27: published by Peter on April 7, 2013
• Revision 28: published on September 26, 2013
• Revision 30: published on September 27, 2013
• Revision 31: published on October 3, 2013
• Revision 32: published on October 7, 2013
• Revision 33: published by Ky6uk on October 16, 2013
• Revision 34: published by Pencroff on October 21, 2013
• Revision 35: published on October 29, 2013
• Revision 36: published on November 4, 2013
• Revision 37: published by Arjun on November 21, 2013
• Revision 38: published by peter on November 23, 2013
• Revision 39: published by Goktug on November 26, 2013
• Revision 40: published on December 19, 2013
• Revision 41: published by Yaniv Kessler on January 5, 2014
• Revision 42: published on January 6, 2014
• Revision 43: published on January 18, 2014
• Revision 44: published on February 4, 2014
• Revision 46: published on February 13, 2014
• Revision 49: published on March 15, 2014
• Revision 50: published on March 17, 2014
• Revision 51: published on March 25, 2014
• Revision 52: published on March 26, 2014
• Revision 53: published on March 28, 2014
• Revision 54: published on June 3, 2014
• Revision 55: published on June 10, 2014
• Revision 56: published by hasOwn on June 11, 2014
• Revision 57: published on July 1, 2014
• Revision 58: published on July 12, 2014
• Revision 59: published by Ingvar Stepanyan on July 26, 2014
• Revision 60: published on August 7, 2014
• Revision 61: published by jfd on August 29, 2014
• Revision 62: published by Dmitry Matveev on August 31, 2014
• Revision 63: published on September 1, 2014
• Revision 64: published on September 2, 2014
• Revision 65: published by a on September 11, 2014
• Revision 66: published by Drew on September 11, 2014
• Revision 68: published by Matthew on September 20, 2014
• Revision 69: published on October 6, 2014
• Revision 71: published on November 14, 2014
• Revision 72: published by Yuval Aloni on November 30, 2014