Array Performance (v152)

Revision 152 of this benchmark created on

Description

Manual array lookups vs. holey arrays.

Setup

var a1 = [{id: 29930, name: 'name1'}, {id: 29931, name: 'name1'},      {id: 29932, name: 'name1'},{id: 29933, name: 'name1'},
{id: 29934, name: 'name1'},{id: 29935, name: 'name1'},
{id: 32994, name: 'name1'},{id: 29936, name: 'name1'},
{id: 29937, name: 'name1'},{id: 29938, name: 'name1'}];

    var a2 = [];
    a2[29930] = {id: 29930, name: 'name1'};
a2[29931] = {id: 29931, name: 'name1'};
a2[29932] = {id: 29932, name: 'name1'};
a2[29933] = {id: 29933, name: 'name1'};
a2[29934] = {id: 29934, name: 'name1'};
a2[29935] = {id: 29935, name: 'name1'};
    a2[32994] = {id: 32994, name: 'name1'};
a2[29936] = {id: 29936, name: 'name1'};
a2[29937] = {id: 29937, name: 'name1'};
a2[29938] = {id: 29938, name: 'name1'};

    var o = {};
    o['29930'] = {id: 29930, name: 'name1'};
o['29931'] = {id: 29931, name: 'name1'};
o['29932'] = {id: 29932, name: 'name1'};
o['29933'] = {id: 29933, name: 'name1'};
o['29934'] = {id: 29934, name: 'name1'};
o['29935'] = {id: 29935, name: 'name1'};
    o['32994'] = {id: 32994, name: 'name1'};
o['29936'] = {id: 29936, name: 'name1'};
o['29937'] = {id: 29937, name: 'name1'};
o['29938'] = {id: 29938, name: 'name1'};

Test runner

Ready to run.

Testing in
TestOps/sec
Manual Array Lookup
var id = 32994;
for (var i = 0; i < a1.length; i++) {
  if (a1[i].id === id) var result = a1[i];
}
 
ready
Holey Array by Index
var id = 32994;
var result = a2[id];
ready
Object by Key
var id = '32994';
var result = o[id];
 
ready

Revisions

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