Run results for: map+array.from vs object iteration

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Browser: Chrome 79

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
map + array.from	879352.6 Ops/sec
object iteration	1160617.0 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Tests:

map + array.from
let myMap = new Map(); myMap.set('1', 'asd1'); myMap.set('2', 'asd2'); myMap.set('3', 'asd3'); myMap.set('4', 'asd4'); myMap.set('5', 'asd5'); myMap.set('6', 'asd6'); var keyArr = Array.from(myMap.keys()); var valArr = Array.from(myMap.values()); myMap.delete('1'); myMap.delete('2'); keyArr = Array.from(myMap.keys()); valArr = Array.from(myMap.values());
object iteration
var myObj = [ {key: '1', value: 'asd1'}, {key: '2', value: 'asd2'}, {key: '3', value: 'asd3'}, {key: '4', value: 'asd4'}, {key: '5', value: 'asd5'}, {key: '6', value: 'asd6'}, ]; var delEle = ['1', '2']; var rem; delEle.forEach(function(del) { rem = _.remove(myObj, function(objj) { return objj.key == del; }); });