Array Performance (v118)

Revision 118 of this benchmark created on

Description

Manual array lookups vs. holey arrays.

Setup

var a1 = [{id: 1, name: 'name1'}, {id: 32994, name: 'name1'}];

    var a2 = [];
    a2[1] = {id: 1, name: 'name1'};
    a2[32994] = {id: 32994, name: 'name1'};

    var o = {};
    o['1'] = {id: 1, name: 'name1'};
    o['32994'] = {id: 32994, name: 'name1'};

Test runner

Ready to run.

Testing in
TestOps/sec
Manual Array Lookup
var id = 1;
for (var i = 0; i < a1.length; i++) {
  if (a1[i].id = id) result = a1[i];
}
 
ready
Holey Array by Index
var id = 1;
var result = a2[id];
ready
Object by Key
var id = '1';
var result = o[id];
 
ready
Holey Array by Index (big)
var id = 32994;
var result = a2[id];
ready
Object by Key (big)
var id = '32994';
var result = o[id];
ready
Object by Key (index)
var id = 1;
var result = o[id];
ready
Object by Key (big and index)
var id = 32994;
var result = o[id];
ready
Holey Array by Index (big)
var id = 32994;
var result = a2[id];
ready
Object by Key (big)
var id = '32994';
var result = o[id];
ready
Object by Key (index)
var id = 1;
var result = o[id];
ready
Object by Key (big and index)
var id = 32994;
var result = o[id];
ready

Revisions

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