Run results for: using data set. array vs object

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:75.0) Gecko/20100101 Firefox/75.0

Browser: Firefox 75

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
array find	16611388.0 Ops/sec
object find	66350824.0 Ops/sec
array filter	1446634.6 Ops/sec
object filter	241525.2 Ops/sec

Script Preparation code:

data_array = [];
data_object = {};

for(let i = 0; i < 100; i++){
  const data = {
    idx: i,
    key: i % 3,
    text: i +'text'
  }
  
  data_array.push(data);
  data_object[i] = data;
}

find_index = 5;

Tests:

array find
const data = data_array.find((row) => { return row.idx === find_index });
object find
const data = data_object[find_index];
array filter
const data = data_array.filter((row) => { return row.key === 2 });
object filter
const data = Object.keys(data_object).filter((key) => { return data_object[key].key === 2 });

Run results for: using data set. array vs object

array find

object find

array filter

object filter