Run results for: Lodash partition VS loop

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lodash	286436.2 Ops/sec
loop push	9422.9 Ops/sec
filter	708961.2 Ops/sec

HTML Preparation code:

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

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

Script Preparation code:

var arr = [];

for (i = 0; i < 1000; i++) {
  arr[i] = i;
}

​x
 
var arr = [];​for (i = 0; i < 1000; i++) {  arr[i] = i;}​​

Tests:

Lodash

var [met, rest] = _.partition(arr, function(i) { return i % 2 === 0 });

 
var [met, rest] = _.partition(arr, function(i) { return i % 2 === 0 });

loop push

var met = [];
var rest = []; 
    for (var i = 0; i < arr.length; i++) {
        if (arr[i] % 2 === 0){
            met.push(arr[i]);}
        else {
            rest.push(arr[i]);  }
    }

 
var met = [];var rest = [];     for (var i = 0; i < arr.length; i++) {        if (arr[i] % 2 === 0){            met.push(arr[i]);}        else {            rest.push(arr[i]);  }    }

filter

var rest = [];
arr = arr.filter(e => {
  if (e % 2 === 0) {
  	return true;
  }
  else {
   rest.push(e);
    return false;
  }
});

 
var rest = [];arr = arr.filter(e => {  if (e % 2 === 0) {    return true;  }  else {   rest.push(e);    return false;  }});