Array Performance (v149)

Revision 149 of this benchmark created on

Description

Manual array lookups vs. holey arrays, vs Set

Setup

var a1 = [{id: 29938, name: 'name1'}, {id: 32994, name: 'name1'}];

    var a2 = [];
    a2[29938] = {id: 29938, name: 'name1'};
    a2[32994] = {id: 32994, name: 'name1'};

    var o = {};
    o['29938'] = {id: 29938, name: 'name1'};
    o['32994'] = {id: 32994, name: 'name1'};

    var s1 = new Set();
    var s2 = new Set();
    for (var i = 0; i<32994; i++){
       s1.add(i);
       s2.add({is:1, name:'name'+i});
     }

Test runner

Ready to run.

Testing in
TestOps/sec
Manual Array Lookup
var id = 29938;
for (var i = 0; i < a1.length; i++) {
  if (a1[i].id = id) result = a1[i];
}
 
ready
Holey Array by Index
var id = 29938;
var result = a2[id];
ready
Object by Key
var id = '29938';
var result = o[id];
 
ready
Set plain
var id='29938';
var result;
for (let item of s1.values()){
   if (item == id) {
      result = item;
     }
}
ready

Revisions

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