Run results for: convert and lookup 10k times and 10k items

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Linux

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
Object lookup	225.1 Ops/sec
Map lookup	233.0 Ops/sec
Set lookup	274.3 Ops/sec

Script Preparation code:

var objList= [
  { name: "Lorem" },
  { name: "ipsum" },
  { name: "dolor" },
  { name: "sit" },
  { name: "amet" },
  { name: "consectetur" },
  { name: "adipisicing" },
  { name: "elit." },
  { name: "Ullam" },
  { name: "nesciunt" },
  { name: "debitis," },
  { name: "facilis" },
  { name: "qui" },
  { name: "possimus" },
  { name: "minus" },
  { name: "rerum" },
  { name: "velit" },
  { name: "saepe" },
  { name: "magnam," },
  { name: "voluptatum" },
  { name: "quos" },
  { name: "eveniet" },
  { name: "ducimus" },
  { name: "facere" },
  { name: "harum" },
  { name: "itaque" },
  { name: "atque" },
  { name: "assumenda" },
  { name: "reiciendis" },
  { name: "exercitationem" }
]

for(let i = 0; i < 100000; i++)
  objList.unshift({ name: ""+i })

​x
 
var objList= [  { name: "Lorem" },  { name: "ipsum" },  { name: "dolor" },  { name: "sit" },  { name: "amet" },  { name: "consectetur" },  { name: "adipisicing" },  { name: "elit." },  { name: "Ullam" },  { name: "nesciunt" },  { name: "debitis," },  { name: "facilis" },  { name: "qui" },  { name: "possimus" },  { name: "minus" },  { name: "rerum" },  { name: "velit" },  { name: "saepe" },  { name: "magnam," },  { name: "voluptatum" },  { name: "quos" },  { name: "eveniet" },  { name: "ducimus" },  { name: "facere" },  { name: "harum" },  { name: "itaque" },  { name: "atque" },  { name: "assumenda" },  { name: "reiciendis" },  { name: "exercitationem" }]​for(let i = 0; i < 100000; i++)  objList.unshift({ name: ""+i })

Tests:

Object lookup

var object = objList.reduce((acc, team) => {
            acc[team.name] = team

            return acc;
        }, {});
var b = object["consectetur"]

 
var object = objList.reduce((acc, team) => {            acc[team.name] = team​            return acc;        }, {});var b = object["consectetur"]​

Map lookup

var map = objList.reduce((acc, team) => {
            acc.set(team.name, team);

            return acc;
        }, new Map());
for(let i = 0; i < 100000; i++)
var b = map.has("consectetur")

 
var map = objList.reduce((acc, team) => {            acc.set(team.name, team);​            return acc;        }, new Map());for(let i = 0; i < 100000; i++)var b = map.has("consectetur")​

Set lookup

var set = objList.reduce((acc, team) => {
            acc.add(team.name);

            return acc;
        }, new Set());
for(let i = 0; i < 100000; i++)
var b = set.has("consectetur")

 
var set = objList.reduce((acc, team) => {            acc.add(team.name);​            return acc;        }, new Set());for(let i = 0; i < 100000; i++)var b = set.has("consectetur")​